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About the Role
Vonage is hiring a Java Software Engineer for the Cloud Engineering team in Barcelona, Spain. This team focuses on the Vonage Video Platform, with an emphasis on improving PaaS backend systems. The work centers on optimizing cloud resource management and provisioning, as well as designing scalable architectures for distributed computing.
What You Will Do
Develop new features for the Vonage Video Platform.
Enhance backend systems with a focus on quality, fault tolerance, and performance.
Design and implement scalable, distributed solutions.
Work with real-time communications technologies.
Use data to guide improvements in service building and scaling.
What Makes This Role Stand Out
This position offers the chance to deepen expertise in large-scale, highly available systems. The team includes experienced engineers who share a strong interest in cloud infrastructure, media technologies, and real-time communication. Joining Vonage means working on impactful projects that shape how businesses communicate globally.
About the Role Vonage is hiring a Java Software Engineer for the Cloud Engineering team in Barcelona, Spain. This team focuses on the Vonage Video Platform, with an emphasis on improving PaaS backend systems. The work centers on optimizing cloud resource management and provisioning, as well as designing scalable architectures for distributed computing. What …
Are you an accomplished Backend .NET/C# Engineer ready to take the next step in your career? The Gaming Division within Product Development at Betsson Group is currently seeking talented professionals! The Gaming Division focuses on enhancing Game Play and Game Discovery across our diverse brands and markets. Our mission is to provide industry-leading gaming products and an exhilarating user experience on our platforms. We are involved in developing game lobbies, innovative gaming initiatives, and seamless provider integrations. Your Role As a vital member of our team, you will contribute to the development of our Gaming platform, which is at the heart of our operations. This platform underpins all our gaming sites and plays a crucial role in our broader company strategy. You will engage in our transition towards containerization, enhancing the scalability of our systems while ensuring their quality remains top-notch. We continuously reassess our system designs to meet new demands and work on exciting new features. Join our passionate team as we build a scalable, multi-brand platform that supports over 25 online brands, utilized by hundreds of thousands of users worldwide! In essence, you will elevate our Gaming platform to new heights for a global audience!
Join Sopra Steria as a Functional Analyst specializing in Java and Oracle in Madrid. In this pivotal role, you will bridge the gap between stakeholders and technical teams, ensuring the successful implementation of software solutions that meet business needs.Your responsibilities will include gathering and analyzing requirements, designing functional specifications, and collaborating closely with developers to deliver high-quality applications. You will play a crucial role in the project lifecycle, from conception to deployment.
About UsConstructor is a pioneering platform revolutionizing search and discovery in the ecommerce sector. We are dedicated to optimizing critical metrics such as revenue, conversion rates, and profit margins. Our search engine is entirely developed in-house, utilizing advanced transformer models and generative large language models (LLMs). This foundational technology empowers various applications, from search functionalities to personalized recommendations and interactive shopping agents. Engineering is our largest department, and we are proud to affirm that our proprietary engine has consistently outperformed competitors in A/B testing, a testament to our commitment to excellence. We are at the forefront of AI innovation, constantly pushing boundaries to maintain our edge in the market.Our engine is designed for extreme scalability, processing over 1 billion queries daily across 150 languages and approximately 100 countries. Our technology supports some of the world's leading ecommerce brands, including Sephora, Under Armour, and Petco.At Constructor, we are a passionate team eager to solve complex challenges and enhance the experiences of our customers and colleagues alike. We prioritize values such as empathy, openness, curiosity, and a commitment to continuous improvement. We believe that empowering everyone within the organization to excel in their roles leads to remarkable outcomes.Founded in 2019 by Eli Finkelshteyn and Dan McCormick, Constructor is a U.S.-based company that continues to thrive under their leadership.About the TeamThe Recommendations team is pivotal in enhancing user experiences for our customers and their end-users. We comprise a dedicated group of cross-functional engineers who thrive on challenges and are committed to improving lives through technology. We uphold values of transparency, curiosity, and continuous refinement in our work, believing that empowering team members to take initiative fosters exceptional results.Our team is focused on advancing traditional product discovery methods while exploring innovative solutions powered by large language models, pioneering a new era of user engagement and innovation.The Recommendations team manages multiple service endpoints and develops our own cloud-deployed solutions using Python, which necessitates leveraging NoSQL databases and interfacing with both internal and external services. Our future roadmap includes transitioning all major developments into high-load distributed services.About the JobThis role primarily involves designing, delivering, and maintaining high-load real-time web services in close collaboration with talented engineers from both the recommendations team and other departments.Develop, deploy, and support robust recommendation services, including I/O-bound web services, CPU-bound services, and data services.Create AWS CloudFormation scripts, Jenkins jobs, and GitHub actions adhering to industry best practices.Establish service observability, monitoring metrics, and alerting mechanisms (using tools like Prometheus and Grafana).
Join our dynamic Compliance Team as a Backend Engineer, where your primary focus will be on designing and building robust services that prioritize maintainability, performance, and security.If you thrive in an environment with high availability demands, scalability challenges, automated workflows, infrastructure orchestration, and have a passion for working with APIs and protocols like GraphQL and gRPC, we want to hear from you!Key Responsibilities: Developing an exceptional, user-friendly payment platform. Implementing new features and enhancements to elevate our platform's capabilities. Collaborating closely with Frontend and Mobile Engineering teams to ensure seamless UI integration. Working in partnership with product managers, designers, engineers, and other stakeholders throughout the software development lifecycle, from planning and design to implementation and support. Staying current with the evolving tech stack ecosystem. Writing high-quality, efficient code that emphasizes performance and scalability.
The Role Join our expanding Player Rewards & Gamification Product Development team in Malaga as a Backend Software Engineer! At Betsson Group, we prioritize customer engagement to ensure our players return for more. Our focus is on building loyalty through an exceptional customer experience beyond mere gameplay, featuring tournaments, dynamic personalized campaigns, and much more! As part of our journey towards containerization, you'll play a crucial role in enhancing the scalability of our systems while maintaining their high quality. We constantly reevaluate our system designs to meet new requirements and work on exciting features. Your Responsibilities: Design and develop distributed backend services utilizing .NET and an event-driven architecture. Collaborate with product and commercial teams to transform engagement ideas into scalable, maintainable, and user-friendly solutions. Optimize our microservice ecosystem for improved performance, reliability, and observability. Advance our containerization and cloud migration strategies. Engage in architecture discussions and contribute to shaping technical decisions. For senior engineers: Lead architectural decisions and proactively identify areas for improvement. Write maintainable, well-tested code and conduct code reviews. Participate in incident resolution and the team’s on-call rotation. Maintain clear technical documentation including ADRs, runbooks, and guidelines. Develop and share your domain expertise within the team.
At Affirm, we are redefining credit to be more transparent and user-friendly, enabling consumers to enjoy the flexibility of buying now and paying later without hidden fees or accruing interest.The Comms Platform team plays a pivotal role in sustaining our organization's success by managing essential services that facilitate transactional communications to our customers through email, SMS, and push notifications. These services require meticulous attention to detail, proactive maintenance, and quick response times to ensure uninterrupted operations.Our current high-priority projects include re-architecting and modernizing our platform, enhancing high availability, and expanding internationalization efforts. These initiatives are crucial for our growth and competitiveness in the market. They demand dedicated expertise and resources to be executed effectively. Without sufficient capacity, we risk delays, reduced quality, and missed opportunities to achieve our strategic objectives. Most importantly, we aim to provide our customers with timely and high-quality communications!Your Responsibilities· Own and drive quarterly goals for your team, leading engineers through uncertainties to resolve complex challenges while ensuring team support throughout the delivery process.· Collaborate with peers and stakeholders in the product development lifecycle, working closely with product management, design, and analytics during ideation, articulating technical constraints, and making decisions that carefully weigh risks and trade-offs.· Proactively identify and advocate for solutions to project, process, technology, or business issues.· Ensure the operation and availability of your team’s artifacts by establishing and monitoring metrics, escalating when necessary, and supporting on-call duties.· Cultivate a culture of quality and ownership within your team by setting or enhancing code review and design standards, advocating for them beyond your team through your writing and technical talks.· Mentor and develop talent within your team by providing constructive feedback and guidance, leading by example.· Participate in an on-call rotation as part of your responsibilities.
Are you ready to make a significant impact? At Cabify, we are on a mission to transform urban living by enhancing mobility for residents, seamlessly connecting riders with drivers at their fingertips. Our vision is to create cities where private cars are a thing of the past. Are you interested in being part of this transformative journey? At Cabify, our commitment to diversity shapes our Product & Engineering teams. We actively seek talent from a variety of backgrounds, supporting initiatives such as Women Tech Dating and our Internal Diversity Committee. Our inclusive job descriptions reflect our dedication to an environment where every contribution is valued. Join us to be a part of innovative teams that truly mirror the diverse talent in the tech sector. With over 20 million users globally, we operate in 8 countries and 90 cities, rapidly adapting our product to maintain leadership in various markets while prioritizing sustainability. The Role: We are seeking a skilled Backend Software Engineer with experience in any backend technology. Your day-to-day tasks will involve working with Go, Elixir, or Ruby. Even if your background is primarily in languages like Java, we believe you can quickly adapt and learn new languages. What matters most to us is your adaptability and ability to learn programming languages swiftly. At Cabify, you will: Collaborate with principal engineers on development planning and architectural design. Coordinate subprojects, building and maintaining robust, testable, and data-driven applications. Enhance the reliability, scalability, and performance of our services. Take ownership of your code all the way to production utilizing a self-service continuous delivery pipeline. Engage in host-level problem-solving and contribute to improving detection methods. Be a key player in fostering our engineering culture, prioritizing quality through peer reviews, monitoring, and best practices.
Full-time|On-site|Barcelona, Catalunya [Cataluña], Spain
About seQuraseQura is at the forefront of fintech innovation, delivering flexible and user-friendly payment technologies that enhance merchants' ability to attract, convert, and retain customers. We are committed to improving sales performance by customizing solutions across various sectors including Retail, Education, Eyewear, Repairs, and Travel, addressing specific challenges to achieve outstanding results.Our mission is to empower savvy consumers seeking value, convenience, and flexibility in their shopping experiences. We offer innovative payment options that allow customers to save, access interest-free credit, or make manageable payments over 24 months.Founded in Barcelona, seQura is a rapidly growing fintech company expanding its reach throughout Southern Europe and Latin America, boasting over 50% CAGR and nearing €100M in Annual Recurring Revenue. Our exceptional service has earned us the trust of over 5,000 businesses and nearly 2 million shoppers, reflected in our impressive NPS of 87%, a Trustpilot rating of 4.7/5, and a Glassdoor rating of 4.7/5.About the Role We are developing seQura’s Smart Agent platform, an advanced intelligent agent system designed to assist shoppers throughout their purchasing journey. This platform integrates Large Language Models (LLMs) for human-like interaction with retrieval-augmented generation (RAG) utilizing seQura’s data, web crawling, and structured product information.This position focuses on the creation of robust, production-ready backend systems that empower these agents to effectively address shopper needs. AI research, data science, or mathematical modeling are not required, as all necessary frameworks are already established.Key Responsibilities:Design and implement scalable backend systems for agent workflows, managing context, state, and interactions.Safely and efficiently integrate AI agent functionalities with core platforms such as payments, shopper accounts, risk management, and merchant services.Utilize RAG frameworks and structured data to generate intelligent responses without the need for model fine-tuning.Collaborate with Product, Frontend, and other teams to deliver seamless user experiences.
At T-Systems, we lead the charge in technological innovation, providing cutting-edge solutions across various sectors such as automotive, healthcare, and public services. Our AI Foundation Services team is dedicated to creating the platform infrastructure that supports AI inference at scale, including API gateways, authentication, billing, and multi-tenant services. We are committed to designing and developing high-performance backend systems and APIs that drive intelligent applications across diverse industries. Our collaborative engineering culture fosters technical depth, creativity, and ownership, enabling our team to make a tangible impact in the real world.Role OverviewWe are seeking a highly skilled Senior Backend Engineer with expertise in Python development and strong system design capabilities. This role requires deep experience in designing, building, and scaling distributed systems and APIs. You will be responsible for architecting and maintaining the backend platform that underpins our AI inference endpoints, a multi-tenant system managing authentication, API key management, usage metering, and billing services. Your contributions will ensure high-availability and data-intensive AI-powered solutions. This position demands high ownership, allowing you to influence architectural decisions, elevate engineering quality, and develop systems that are performant, secure, and observable at scale. You will collaborate with experts in AI infrastructure and data engineering to create robust, secure, and efficient systems capable of handling millions of requests.Responsibilities and DutiesDesign and build core platform services such as API gateway, authentication, authorization, key rotation, and multi-tenant isolation. Implement and optimize APIs and backend systems utilizing Python frameworks, primarily FastAPI (or Flask, or Django).Architect and implement usage metering, billing integration, and rate limiting for inference endpoints. Maintain scalable, fault-tolerant microservices for data processing and AI integration.Build and operate a high-throughput proxy/routing layer for AI model serving traffic. Work collaboratively with cross-functional teams to design system architecture and ensure interoperability.Integrate telemetry and observability into the platform from the ground up, incorporating structured logging, distributed tracing, metrics, and alerting. Implement robust CI/CD pipelines, monitoring, and observability for high-performance production systems.Drive technical decisions on architecture, data modeling, and technology choices. Identify performance bottlenecks and promote enhancements in reliability, scalability, and latency.Establish engineering standards for the backend codebase, including testing, code review, CI/CD, and deployment practices. Ensure adherence to best practices for security and code quality.
Join Affirm as a Staff Software Engineer specializing in backend deal reporting. In this role, you will contribute to critical systems that facilitate our reporting processes, ensuring accuracy and efficiency. You will collaborate with cross-functional teams to design and implement robust solutions that meet business needs.
Full-time|On-site|Barcelona, Catalunya [Cataluña], Spain
Join our dynamic global team as a Junior Backend Engineer and play a pivotal role in the quality, development, and execution of our innovative software products.You will be an integral part of our technology department, working alongside a diverse and talented group of professionals from various locations including Barcelona, New York, London, Manchester, Bucharest, and India. If you're eager to contribute to a fast-growing company and make a significant impact, we encourage you to apply!About TransPerfect – TechOps:For over a decade, the TransPerfect TechOps team has been crucial to our company's achievements, delivering cutting-edge technology and services that greatly enhance the experience of our clients and colleagues alike. From streamlining workflows for our team members to developing core services that underpin our GlobalLink platform, we create scalable client interfaces that empower users to navigate complex systems effortlessly.
Join our dynamic team as a FullStack Software Engineer specializing in Java and Angular. In this role, you will design, implement, and maintain innovative back-end and front-end solutions, tackling various business challenges. Leveraging your skills in Java, the Spring ecosystem, PostgreSQL, Angular, TypeScript, Docker, and Kubernetes, you will collaborate closely with our product owner and cross-functional teams to understand their requirements. Your expertise will be pivotal in enhancing our products and services, optimizing customer experiences, and boosting operational efficiency.You will be responsible for creating software solution designs and managing their documentation.You will establish standards for system testing and test automation while overseeing the installation and configuration of software for complex products and services.You will assist team members during error analysis and correction, providing technical support for the products and services you support.Collaborate with international teams and have the opportunity to lead strategically significant projects.
Are you a skilled Backend .NET/C# Engineer seeking an exciting new opportunity? Join the Gaming Area within Product Development at Betsson Group! Our Gaming Area focuses on enhancing Game Play and Game Discovery across all our brands and markets. We are dedicated to delivering the industry's finest gaming products while providing an engaging user experience on our platforms. Our scope includes game lobbies, gaming initiatives, provider integrations, and much more. Your Role You will play a vital role in our core Gaming platform, which supports all our gaming sites and is pivotal to our company strategy. As we embark on our journey towards containerization, you will contribute to scaling our systems while preserving their high quality. We continuously reassess our system design to meet new requirements and work on exciting features. You will collaborate with a passionate team to build a scalable, multi-brand platform supporting over 25 online brands, utilized by hundreds of thousands of users globally. In summary, you will elevate our Gaming platform which serves a worldwide audience! Key Qualifications We are looking for candidates with prior experience as a backend developer and familiarity with the following core technical skills. You should be a collaborative individual who enjoys helping and sharing knowledge with team members. C#, .NET Framework, .NET Core 8 .NET Core Web API SQL Server and NoSQL databases Messaging services within a microservice architecture GitHub and GitFlow Workflow branching strategy Experience in an Agile environment Proficiency in written and spoken English Additionally, experience with RabbitMQ/Kafka, Docker containerization, and Domain Driven Design is a plus. Our Technology Stack At Betsson, we pride ourselves on staying adaptable and current with the latest technologies. Our current tech stack includes: Backend: .NET C#, .NET Core, Specflow .NET Core Web API, .NET Web API AWS, Kubernetes, Docker PostgreSQL, MSSQL, Redis, Couchbase Apache Kafka, RabbitMQ GitHub, TeamCity What We Offer Health Insurance 401k Paid Time Off
Airapps is looking for a Backend DevOps Engineer in Barcelona to help strengthen cloud infrastructure and improve deployment processes. This position involves working closely with teams from different disciplines to build scalable systems and automate key workflows. Role overview The Backend DevOps Engineer will focus on supporting and optimizing cloud-based environments. The work includes streamlining deployment pipelines and maintaining high performance for applications across the company. Collaboration This role requires frequent collaboration with cross-functional groups. Sharing knowledge and finding practical solutions together will be part of daily work. Key responsibilities Enhancing and maintaining cloud infrastructure Automating deployment and operational workflows Working with teams to deliver scalable solutions Ensuring applications run efficiently and reliably
Service Orchestration: Architect, develop, and sustain the service layer that acts as the gateway for our native iOS and Android Tracking SDKs.API Contract Design: Collaborate with mobile engineers to establish robust and efficient API contracts (REST) that minimize data payloads and latency.System Scalability: Guarantee the dependability of systems managing billions of events, with a focus on high throughput and low-latency response times.Cross-Stack Collaboration: Cooperate closely with core Tracking teams to ensure seamless data flow from UI components through your services and into the global data lake and inner source as necessary.Architecture & Quality: Produce clean, maintainable code and uphold high testing standards. Engage in the RFC process to influence the technical trajectory of the central tracking platform.Operational Excellence: Take ownership of monitoring, alerting, and performance profiling of your services utilizing tools such as Grafana, Sentry, or Prometheus.
Groupon is a dynamic marketplace that connects customers with exciting experiences and services, empowering local businesses to thrive. Having partnered with over a million merchants worldwide, we facilitate connections for 16 million customers seeking deals across diverse categories. In a world dominated by e-commerce giants, we pride ourselves on being a platform genuinely committed to the success of local businesses through performance-driven strategies.At Groupon, we are on an ambitious journey to transform our operations with a relentless focus on achieving results. Despite our global presence with thousands of employees, we uphold a culture that fosters innovation, encourages risk-taking, and celebrates success. Here, your impact can be immediate, as we operate on a scale that allows for rapid transformation. We embody a "best of both worlds" philosophy—large enough to offer robust resources, yet small enough for individuals to wield significant autonomy and make a meaningful impact.About the RoleJoin our CoreApps Platform team, the backbone of Groupon's engineering efforts responsible for the global commerce engine. Our platform manages every customer interaction and transaction on a worldwide scale. In this high-impact, senior-level Individual Contributor (IC) role, you will focus on ensuring KTLO stability at massive scale while advancing a significant platform modernization initiative through an AI-first approach.You will take ownership of mission-critical services that handle over 100,000 Requests Per Minute (RPM) and drive the transition from legacy Java/Ruby systems to a modern TypeScript/Node.js microservices architecture, utilizing cutting-edge AI coding tools to achieve unmatched speed and quality.
Are you passionate about backend development? Join Delivery Hero as a Backend Engineer and be part of a dynamic team that drives innovation in the food delivery industry. In this role, you will design and implement scalable backend solutions, working with cutting-edge technologies to enhance our platform's performance. Collaborate with cross-functional teams to deliver high-quality software that meets the needs of our customers.
We are seeking a talented and experienced Staff Software Engineer (Backend) to join our dynamic team in the fast-paced world of quick commerce. As a vital member of our engineering team, you will be responsible for designing, developing, and maintaining backend services that power our innovative delivery solutions.Your expertise will contribute to enhancing our platform's performance, scalability, and reliability, ensuring we deliver exceptional service to our customers.
Join our dynamic team at Affirm as a Senior Backend Software Engineer specializing in the Merchant Data Platform. In this fully remote role based in Spain, you will play a crucial part in designing and implementing scalable backend systems that enhance our merchant services. Collaborate with cross-functional teams to drive innovation and optimize our platform for superior performance.
About the Role Vonage is hiring a Java Software Engineer for the Cloud Engineering team in Barcelona, Spain. This team focuses on the Vonage Video Platform, with an emphasis on improving PaaS backend systems. The work centers on optimizing cloud resource management and provisioning, as well as designing scalable architectures for distributed computing. What …
Are you an accomplished Backend .NET/C# Engineer ready to take the next step in your career? The Gaming Division within Product Development at Betsson Group is currently seeking talented professionals! The Gaming Division focuses on enhancing Game Play and Game Discovery across our diverse brands and markets. Our mission is to provide industry-leading gaming products and an exhilarating user experience on our platforms. We are involved in developing game lobbies, innovative gaming initiatives, and seamless provider integrations. Your Role As a vital member of our team, you will contribute to the development of our Gaming platform, which is at the heart of our operations. This platform underpins all our gaming sites and plays a crucial role in our broader company strategy. You will engage in our transition towards containerization, enhancing the scalability of our systems while ensuring their quality remains top-notch. We continuously reassess our system designs to meet new demands and work on exciting new features. Join our passionate team as we build a scalable, multi-brand platform that supports over 25 online brands, utilized by hundreds of thousands of users worldwide! In essence, you will elevate our Gaming platform to new heights for a global audience!
Join Sopra Steria as a Functional Analyst specializing in Java and Oracle in Madrid. In this pivotal role, you will bridge the gap between stakeholders and technical teams, ensuring the successful implementation of software solutions that meet business needs.Your responsibilities will include gathering and analyzing requirements, designing functional specifications, and collaborating closely with developers to deliver high-quality applications. You will play a crucial role in the project lifecycle, from conception to deployment.
About UsConstructor is a pioneering platform revolutionizing search and discovery in the ecommerce sector. We are dedicated to optimizing critical metrics such as revenue, conversion rates, and profit margins. Our search engine is entirely developed in-house, utilizing advanced transformer models and generative large language models (LLMs). This foundational technology empowers various applications, from search functionalities to personalized recommendations and interactive shopping agents. Engineering is our largest department, and we are proud to affirm that our proprietary engine has consistently outperformed competitors in A/B testing, a testament to our commitment to excellence. We are at the forefront of AI innovation, constantly pushing boundaries to maintain our edge in the market.Our engine is designed for extreme scalability, processing over 1 billion queries daily across 150 languages and approximately 100 countries. Our technology supports some of the world's leading ecommerce brands, including Sephora, Under Armour, and Petco.At Constructor, we are a passionate team eager to solve complex challenges and enhance the experiences of our customers and colleagues alike. We prioritize values such as empathy, openness, curiosity, and a commitment to continuous improvement. We believe that empowering everyone within the organization to excel in their roles leads to remarkable outcomes.Founded in 2019 by Eli Finkelshteyn and Dan McCormick, Constructor is a U.S.-based company that continues to thrive under their leadership.About the TeamThe Recommendations team is pivotal in enhancing user experiences for our customers and their end-users. We comprise a dedicated group of cross-functional engineers who thrive on challenges and are committed to improving lives through technology. We uphold values of transparency, curiosity, and continuous refinement in our work, believing that empowering team members to take initiative fosters exceptional results.Our team is focused on advancing traditional product discovery methods while exploring innovative solutions powered by large language models, pioneering a new era of user engagement and innovation.The Recommendations team manages multiple service endpoints and develops our own cloud-deployed solutions using Python, which necessitates leveraging NoSQL databases and interfacing with both internal and external services. Our future roadmap includes transitioning all major developments into high-load distributed services.About the JobThis role primarily involves designing, delivering, and maintaining high-load real-time web services in close collaboration with talented engineers from both the recommendations team and other departments.Develop, deploy, and support robust recommendation services, including I/O-bound web services, CPU-bound services, and data services.Create AWS CloudFormation scripts, Jenkins jobs, and GitHub actions adhering to industry best practices.Establish service observability, monitoring metrics, and alerting mechanisms (using tools like Prometheus and Grafana).
Join our dynamic Compliance Team as a Backend Engineer, where your primary focus will be on designing and building robust services that prioritize maintainability, performance, and security.If you thrive in an environment with high availability demands, scalability challenges, automated workflows, infrastructure orchestration, and have a passion for working with APIs and protocols like GraphQL and gRPC, we want to hear from you!Key Responsibilities: Developing an exceptional, user-friendly payment platform. Implementing new features and enhancements to elevate our platform's capabilities. Collaborating closely with Frontend and Mobile Engineering teams to ensure seamless UI integration. Working in partnership with product managers, designers, engineers, and other stakeholders throughout the software development lifecycle, from planning and design to implementation and support. Staying current with the evolving tech stack ecosystem. Writing high-quality, efficient code that emphasizes performance and scalability.
The Role Join our expanding Player Rewards & Gamification Product Development team in Malaga as a Backend Software Engineer! At Betsson Group, we prioritize customer engagement to ensure our players return for more. Our focus is on building loyalty through an exceptional customer experience beyond mere gameplay, featuring tournaments, dynamic personalized campaigns, and much more! As part of our journey towards containerization, you'll play a crucial role in enhancing the scalability of our systems while maintaining their high quality. We constantly reevaluate our system designs to meet new requirements and work on exciting features. Your Responsibilities: Design and develop distributed backend services utilizing .NET and an event-driven architecture. Collaborate with product and commercial teams to transform engagement ideas into scalable, maintainable, and user-friendly solutions. Optimize our microservice ecosystem for improved performance, reliability, and observability. Advance our containerization and cloud migration strategies. Engage in architecture discussions and contribute to shaping technical decisions. For senior engineers: Lead architectural decisions and proactively identify areas for improvement. Write maintainable, well-tested code and conduct code reviews. Participate in incident resolution and the team’s on-call rotation. Maintain clear technical documentation including ADRs, runbooks, and guidelines. Develop and share your domain expertise within the team.
At Affirm, we are redefining credit to be more transparent and user-friendly, enabling consumers to enjoy the flexibility of buying now and paying later without hidden fees or accruing interest.The Comms Platform team plays a pivotal role in sustaining our organization's success by managing essential services that facilitate transactional communications to our customers through email, SMS, and push notifications. These services require meticulous attention to detail, proactive maintenance, and quick response times to ensure uninterrupted operations.Our current high-priority projects include re-architecting and modernizing our platform, enhancing high availability, and expanding internationalization efforts. These initiatives are crucial for our growth and competitiveness in the market. They demand dedicated expertise and resources to be executed effectively. Without sufficient capacity, we risk delays, reduced quality, and missed opportunities to achieve our strategic objectives. Most importantly, we aim to provide our customers with timely and high-quality communications!Your Responsibilities· Own and drive quarterly goals for your team, leading engineers through uncertainties to resolve complex challenges while ensuring team support throughout the delivery process.· Collaborate with peers and stakeholders in the product development lifecycle, working closely with product management, design, and analytics during ideation, articulating technical constraints, and making decisions that carefully weigh risks and trade-offs.· Proactively identify and advocate for solutions to project, process, technology, or business issues.· Ensure the operation and availability of your team’s artifacts by establishing and monitoring metrics, escalating when necessary, and supporting on-call duties.· Cultivate a culture of quality and ownership within your team by setting or enhancing code review and design standards, advocating for them beyond your team through your writing and technical talks.· Mentor and develop talent within your team by providing constructive feedback and guidance, leading by example.· Participate in an on-call rotation as part of your responsibilities.
Are you ready to make a significant impact? At Cabify, we are on a mission to transform urban living by enhancing mobility for residents, seamlessly connecting riders with drivers at their fingertips. Our vision is to create cities where private cars are a thing of the past. Are you interested in being part of this transformative journey? At Cabify, our commitment to diversity shapes our Product & Engineering teams. We actively seek talent from a variety of backgrounds, supporting initiatives such as Women Tech Dating and our Internal Diversity Committee. Our inclusive job descriptions reflect our dedication to an environment where every contribution is valued. Join us to be a part of innovative teams that truly mirror the diverse talent in the tech sector. With over 20 million users globally, we operate in 8 countries and 90 cities, rapidly adapting our product to maintain leadership in various markets while prioritizing sustainability. The Role: We are seeking a skilled Backend Software Engineer with experience in any backend technology. Your day-to-day tasks will involve working with Go, Elixir, or Ruby. Even if your background is primarily in languages like Java, we believe you can quickly adapt and learn new languages. What matters most to us is your adaptability and ability to learn programming languages swiftly. At Cabify, you will: Collaborate with principal engineers on development planning and architectural design. Coordinate subprojects, building and maintaining robust, testable, and data-driven applications. Enhance the reliability, scalability, and performance of our services. Take ownership of your code all the way to production utilizing a self-service continuous delivery pipeline. Engage in host-level problem-solving and contribute to improving detection methods. Be a key player in fostering our engineering culture, prioritizing quality through peer reviews, monitoring, and best practices.
Full-time|On-site|Barcelona, Catalunya [Cataluña], Spain
About seQuraseQura is at the forefront of fintech innovation, delivering flexible and user-friendly payment technologies that enhance merchants' ability to attract, convert, and retain customers. We are committed to improving sales performance by customizing solutions across various sectors including Retail, Education, Eyewear, Repairs, and Travel, addressing specific challenges to achieve outstanding results.Our mission is to empower savvy consumers seeking value, convenience, and flexibility in their shopping experiences. We offer innovative payment options that allow customers to save, access interest-free credit, or make manageable payments over 24 months.Founded in Barcelona, seQura is a rapidly growing fintech company expanding its reach throughout Southern Europe and Latin America, boasting over 50% CAGR and nearing €100M in Annual Recurring Revenue. Our exceptional service has earned us the trust of over 5,000 businesses and nearly 2 million shoppers, reflected in our impressive NPS of 87%, a Trustpilot rating of 4.7/5, and a Glassdoor rating of 4.7/5.About the Role We are developing seQura’s Smart Agent platform, an advanced intelligent agent system designed to assist shoppers throughout their purchasing journey. This platform integrates Large Language Models (LLMs) for human-like interaction with retrieval-augmented generation (RAG) utilizing seQura’s data, web crawling, and structured product information.This position focuses on the creation of robust, production-ready backend systems that empower these agents to effectively address shopper needs. AI research, data science, or mathematical modeling are not required, as all necessary frameworks are already established.Key Responsibilities:Design and implement scalable backend systems for agent workflows, managing context, state, and interactions.Safely and efficiently integrate AI agent functionalities with core platforms such as payments, shopper accounts, risk management, and merchant services.Utilize RAG frameworks and structured data to generate intelligent responses without the need for model fine-tuning.Collaborate with Product, Frontend, and other teams to deliver seamless user experiences.
At T-Systems, we lead the charge in technological innovation, providing cutting-edge solutions across various sectors such as automotive, healthcare, and public services. Our AI Foundation Services team is dedicated to creating the platform infrastructure that supports AI inference at scale, including API gateways, authentication, billing, and multi-tenant services. We are committed to designing and developing high-performance backend systems and APIs that drive intelligent applications across diverse industries. Our collaborative engineering culture fosters technical depth, creativity, and ownership, enabling our team to make a tangible impact in the real world.Role OverviewWe are seeking a highly skilled Senior Backend Engineer with expertise in Python development and strong system design capabilities. This role requires deep experience in designing, building, and scaling distributed systems and APIs. You will be responsible for architecting and maintaining the backend platform that underpins our AI inference endpoints, a multi-tenant system managing authentication, API key management, usage metering, and billing services. Your contributions will ensure high-availability and data-intensive AI-powered solutions. This position demands high ownership, allowing you to influence architectural decisions, elevate engineering quality, and develop systems that are performant, secure, and observable at scale. You will collaborate with experts in AI infrastructure and data engineering to create robust, secure, and efficient systems capable of handling millions of requests.Responsibilities and DutiesDesign and build core platform services such as API gateway, authentication, authorization, key rotation, and multi-tenant isolation. Implement and optimize APIs and backend systems utilizing Python frameworks, primarily FastAPI (or Flask, or Django).Architect and implement usage metering, billing integration, and rate limiting for inference endpoints. Maintain scalable, fault-tolerant microservices for data processing and AI integration.Build and operate a high-throughput proxy/routing layer for AI model serving traffic. Work collaboratively with cross-functional teams to design system architecture and ensure interoperability.Integrate telemetry and observability into the platform from the ground up, incorporating structured logging, distributed tracing, metrics, and alerting. Implement robust CI/CD pipelines, monitoring, and observability for high-performance production systems.Drive technical decisions on architecture, data modeling, and technology choices. Identify performance bottlenecks and promote enhancements in reliability, scalability, and latency.Establish engineering standards for the backend codebase, including testing, code review, CI/CD, and deployment practices. Ensure adherence to best practices for security and code quality.
Join Affirm as a Staff Software Engineer specializing in backend deal reporting. In this role, you will contribute to critical systems that facilitate our reporting processes, ensuring accuracy and efficiency. You will collaborate with cross-functional teams to design and implement robust solutions that meet business needs.
Full-time|On-site|Barcelona, Catalunya [Cataluña], Spain
Join our dynamic global team as a Junior Backend Engineer and play a pivotal role in the quality, development, and execution of our innovative software products.You will be an integral part of our technology department, working alongside a diverse and talented group of professionals from various locations including Barcelona, New York, London, Manchester, Bucharest, and India. If you're eager to contribute to a fast-growing company and make a significant impact, we encourage you to apply!About TransPerfect – TechOps:For over a decade, the TransPerfect TechOps team has been crucial to our company's achievements, delivering cutting-edge technology and services that greatly enhance the experience of our clients and colleagues alike. From streamlining workflows for our team members to developing core services that underpin our GlobalLink platform, we create scalable client interfaces that empower users to navigate complex systems effortlessly.
Join our dynamic team as a FullStack Software Engineer specializing in Java and Angular. In this role, you will design, implement, and maintain innovative back-end and front-end solutions, tackling various business challenges. Leveraging your skills in Java, the Spring ecosystem, PostgreSQL, Angular, TypeScript, Docker, and Kubernetes, you will collaborate closely with our product owner and cross-functional teams to understand their requirements. Your expertise will be pivotal in enhancing our products and services, optimizing customer experiences, and boosting operational efficiency.You will be responsible for creating software solution designs and managing their documentation.You will establish standards for system testing and test automation while overseeing the installation and configuration of software for complex products and services.You will assist team members during error analysis and correction, providing technical support for the products and services you support.Collaborate with international teams and have the opportunity to lead strategically significant projects.
Are you a skilled Backend .NET/C# Engineer seeking an exciting new opportunity? Join the Gaming Area within Product Development at Betsson Group! Our Gaming Area focuses on enhancing Game Play and Game Discovery across all our brands and markets. We are dedicated to delivering the industry's finest gaming products while providing an engaging user experience on our platforms. Our scope includes game lobbies, gaming initiatives, provider integrations, and much more. Your Role You will play a vital role in our core Gaming platform, which supports all our gaming sites and is pivotal to our company strategy. As we embark on our journey towards containerization, you will contribute to scaling our systems while preserving their high quality. We continuously reassess our system design to meet new requirements and work on exciting features. You will collaborate with a passionate team to build a scalable, multi-brand platform supporting over 25 online brands, utilized by hundreds of thousands of users globally. In summary, you will elevate our Gaming platform which serves a worldwide audience! Key Qualifications We are looking for candidates with prior experience as a backend developer and familiarity with the following core technical skills. You should be a collaborative individual who enjoys helping and sharing knowledge with team members. C#, .NET Framework, .NET Core 8 .NET Core Web API SQL Server and NoSQL databases Messaging services within a microservice architecture GitHub and GitFlow Workflow branching strategy Experience in an Agile environment Proficiency in written and spoken English Additionally, experience with RabbitMQ/Kafka, Docker containerization, and Domain Driven Design is a plus. Our Technology Stack At Betsson, we pride ourselves on staying adaptable and current with the latest technologies. Our current tech stack includes: Backend: .NET C#, .NET Core, Specflow .NET Core Web API, .NET Web API AWS, Kubernetes, Docker PostgreSQL, MSSQL, Redis, Couchbase Apache Kafka, RabbitMQ GitHub, TeamCity What We Offer Health Insurance 401k Paid Time Off
Airapps is looking for a Backend DevOps Engineer in Barcelona to help strengthen cloud infrastructure and improve deployment processes. This position involves working closely with teams from different disciplines to build scalable systems and automate key workflows. Role overview The Backend DevOps Engineer will focus on supporting and optimizing cloud-based environments. The work includes streamlining deployment pipelines and maintaining high performance for applications across the company. Collaboration This role requires frequent collaboration with cross-functional groups. Sharing knowledge and finding practical solutions together will be part of daily work. Key responsibilities Enhancing and maintaining cloud infrastructure Automating deployment and operational workflows Working with teams to deliver scalable solutions Ensuring applications run efficiently and reliably
Service Orchestration: Architect, develop, and sustain the service layer that acts as the gateway for our native iOS and Android Tracking SDKs.API Contract Design: Collaborate with mobile engineers to establish robust and efficient API contracts (REST) that minimize data payloads and latency.System Scalability: Guarantee the dependability of systems managing billions of events, with a focus on high throughput and low-latency response times.Cross-Stack Collaboration: Cooperate closely with core Tracking teams to ensure seamless data flow from UI components through your services and into the global data lake and inner source as necessary.Architecture & Quality: Produce clean, maintainable code and uphold high testing standards. Engage in the RFC process to influence the technical trajectory of the central tracking platform.Operational Excellence: Take ownership of monitoring, alerting, and performance profiling of your services utilizing tools such as Grafana, Sentry, or Prometheus.
Groupon is a dynamic marketplace that connects customers with exciting experiences and services, empowering local businesses to thrive. Having partnered with over a million merchants worldwide, we facilitate connections for 16 million customers seeking deals across diverse categories. In a world dominated by e-commerce giants, we pride ourselves on being a platform genuinely committed to the success of local businesses through performance-driven strategies.At Groupon, we are on an ambitious journey to transform our operations with a relentless focus on achieving results. Despite our global presence with thousands of employees, we uphold a culture that fosters innovation, encourages risk-taking, and celebrates success. Here, your impact can be immediate, as we operate on a scale that allows for rapid transformation. We embody a "best of both worlds" philosophy—large enough to offer robust resources, yet small enough for individuals to wield significant autonomy and make a meaningful impact.About the RoleJoin our CoreApps Platform team, the backbone of Groupon's engineering efforts responsible for the global commerce engine. Our platform manages every customer interaction and transaction on a worldwide scale. In this high-impact, senior-level Individual Contributor (IC) role, you will focus on ensuring KTLO stability at massive scale while advancing a significant platform modernization initiative through an AI-first approach.You will take ownership of mission-critical services that handle over 100,000 Requests Per Minute (RPM) and drive the transition from legacy Java/Ruby systems to a modern TypeScript/Node.js microservices architecture, utilizing cutting-edge AI coding tools to achieve unmatched speed and quality.
Are you passionate about backend development? Join Delivery Hero as a Backend Engineer and be part of a dynamic team that drives innovation in the food delivery industry. In this role, you will design and implement scalable backend solutions, working with cutting-edge technologies to enhance our platform's performance. Collaborate with cross-functional teams to deliver high-quality software that meets the needs of our customers.
We are seeking a talented and experienced Staff Software Engineer (Backend) to join our dynamic team in the fast-paced world of quick commerce. As a vital member of our engineering team, you will be responsible for designing, developing, and maintaining backend services that power our innovative delivery solutions.Your expertise will contribute to enhancing our platform's performance, scalability, and reliability, ensuring we deliver exceptional service to our customers.
Join our dynamic team at Affirm as a Senior Backend Software Engineer specializing in the Merchant Data Platform. In this fully remote role based in Spain, you will play a crucial part in designing and implementing scalable backend systems that enhance our merchant services. Collaborate with cross-functional teams to drive innovation and optimize our platform for superior performance.
