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Constructor logo
Full-time|$80K/yr - $120K/yr|Remote|Remote — Spain

About UsConstructor is revolutionizing the ecommerce landscape with our next-generation search and discovery platform designed to enhance crucial metrics such as revenue, conversion rates, and profitability. Our proprietary search engine, developed entirely in-house, leverages advanced technologies like transformers and generative LLMs to deliver exceptional…

Dec 3, 2025
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constructor-1 logo
Full-time|Remote|Remote — Spain

Role Overview constructor-1 is hiring a Senior Backend Engineer focused on Attribute Enrichment. This position is fully remote within Spain. The role centers on improving backend systems, strengthening data accuracy, and enriching user attributes to support a smooth experience for clients. What You Will Do Enhance and maintain backend systems with a focus on attribute enrichment Work closely with cross-functional teams to develop solutions that improve data quality Help ensure user attributes are accurate and comprehensive for downstream services What We Look For Professional experience with backend technologies Strong problem-solving skills and interest in complex technical challenges Ability to collaborate effectively with colleagues across different functions Location Remote within Spain.

Apr 15, 2026
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HSP Group logo
Full-time|Remote|Spain

About HSP GroupHSP Group stands as a leading provider of global expansion services, dedicated to alleviating the complexities associated with international operations. Our comprehensive offerings encompass legal entity setup, global HR, payroll, compliance, tax, and advisory, empowering our clients to accelerate growth, ensure compliance, and mitigate risks in new markets.As a pioneering force in the rapidly evolving sector of global expansion management, we are a Stage B startup committed to delivering exceptional value through continuous innovation, execution, and a focus on customer satisfaction. Join our small yet highly skilled and dynamic team, and make a significant impact on our company's trajectory.About Gateway HRGateway HR is our cutting-edge HRIS platform, meticulously crafted for global expansion management. It integrates seamlessly with Gateway GXM, our premier global entity management platform, facilitating functionalities like automated payslip generation, intelligent contract management, and effortless cross-border compliance.Our platform ecosystem incorporates AI-driven document recognition and classification, utilizes an event-driven serverless architecture on Azure, and encompasses a broad range of integrated tools tailored to HR, entity management, and compliance.Job OverviewThis position is fully remote.We seek a talented Lead Backend Engineer to spearhead the technical strategy of Gateway HR and enhance its integration with GXM. Your role will blend hands-on platform development with technical leadership over external development teams, advancing the architecture, crafting innovative features, and upholding HSP's engineering standards throughout the codebase.This role is not purely managerial; you will engage in coding, PR reviews, architectural discussions, and feature delivery while establishing high standards for quality and performance.

Feb 18, 2026
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Constructor logo
Full-time|$80K/yr - $120K/yr|Remote|Remote — Spain

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).

Jan 16, 2026
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Exoticca logo
Full-time|Remote|Remote — Barcelona, Catalonia, Spain

Join Exoticca as a Senior Backend Software Engineer!About UsExoticca is a trailblazing online travel agency dedicated to transforming the way people experience long-distance travel. Our mission revolves around crafting memorable life experiences through exceptional travel adventures. We pride ourselves on offering unmatched value, exploring diverse destinations, and creating extraordinary travel journeys while prioritizing our customers and the environment.Our vibrant, multicultural team is expanding rapidly, and we are on the lookout for passionate individuals who can contribute to building a pioneering travel company that redefines the industry.Your RoleWe are seeking a Senior Backend Software Engineer who excels at problem-solving. You will leverage engineering as a powerful tool to address real-world customer and business challenges.This position falls within our Trip Management System domain, where you will empower our travel specialists to design remarkable journeys at scale. You will contribute to the systems that convert destinations, itineraries, flights, hotels, and pricing strategies into structured, market-ready travel products. Through seamless product configuration, accuracy, and scalability, your work will directly enhance revenue, operational excellence, and customer satisfaction.While technology choices are important, the impact of your work is paramount. You will engage with PHP, Node.js, and contemporary AI tools, selecting the optimal approach for each unique challenge without being limited to a single technology stack.Why Join Us?Engage with genuine, impactful challenges that enhance customer experiences.Enjoy the freedom to select the right tools, including advanced AI technologies.Work within a team that values initiative, ownership, and meaningful contributions over titles and bureaucracy.Face scale-up challenges with opportunities to influence architecture, products, and workflows.If you seek stimulating problems, autonomy, and opportunities for professional growth, we welcome you!

Mar 10, 2026
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Cross Border Talents logo
Full-time|Remote|Remote — Spain

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.

Mar 8, 2022
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jobgether logo
Full-time|On-site|Spain

jobgether is looking for a Backend Engineer based in Spain. This position centers on building and maintaining server-side applications that support the company’s products. Role overview The Backend Engineer will develop features and maintain the backend systems, focusing on performance and responsiveness. Collaboration with front-end developers is a key part of the job, integrating user-facing elements with server-side logic. The role also involves working to improve backend architecture for better scalability and reliability. What you will do Develop and maintain server-side applications Collaborate with front-end developers to connect user interfaces with backend systems Optimize backend architecture for scalability and reliability Ensure high performance and responsiveness to front-end requests

Apr 29, 2026
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Cabify logo
Full-time|Remote|Remote or Madrid (HQ)

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.

Feb 23, 2026
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Grafana Labs logo
Full-time|Remote|Spain (Remote)

Grafana Labs creates open-source observability tools trusted by millions around the globe. The company’s dashboards and software support organizations such as Bloomberg and eBay, and have been featured in settings ranging from NASA missions to major sporting events. The team works fully remotely, emphasizing transparency, autonomy, and work that matters. Role overview This Senior Backend Engineer position focuses on the Grafana Mimir open-source project. The role is part of a remote team in Spain, working within a specialized sub-squad (either Query or Storage). The team is responsible for Grafana Cloud Metrics across leading cloud providers, building and maintaining distributed systems that must deliver high reliability and strong performance. What you will do Work on large-scale backend development within the Mimir codebase Analyze production operations to boost system performance and reliability Write and review pull requests to maintain code quality Guide automated release processes for the team’s software Take part in the on-call rotation for the systems owned by your team Collaboration The role involves close collaboration with experienced engineers in an environment that values open communication and shared responsibility. The team supports each other to deliver scalable, impactful software. Location This is a fully remote role based in Spain.

Apr 22, 2026
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bunch logo
Full-time|On-site|Spain

Join our dynamic team at bunch as a Senior Backend Engineer, where you will lead the design and development of innovative backend systems. You will collaborate closely with cross-functional teams to deliver high-quality software solutions that enhance user experiences. Your expertise will drive the architecture of scalable applications, ensuring they are robust and efficient.

Feb 24, 2026
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abacum logo
Full-time|Remote|Remote Spain

Abacum is looking for a Senior Backend Engineer focused on integrations. This position is fully remote within Spain. Role overview This role centers on designing and building backend solutions that connect Abacum's product with a range of external systems. The work involves improving integration features while maintaining strong performance and scalability. What you will do Create and maintain backend services that enable seamless integration with third-party platforms. Enhance existing product capabilities by developing new integration features. Ensure backend systems operate efficiently and scale to meet business needs. Requirements Experience building backend solutions, with a focus on integrations. Strong understanding of system performance and scalability. Ability to work independently in a remote setting within Spain.

Apr 29, 2026
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Deel logo
Full-time|Remote|Spain

Role overview Deel seeks a Backend Engineer with solid experience in Node.js and TypeScript. This position is based in Spain and supports projects across the EMEA region. The role centers on building and maintaining backend services that power a global platform. What you will do Develop and maintain backend services using Node.js and TypeScript Collaborate with cross-functional teams to deliver solutions for users worldwide Help ensure the quality and reliability of backend systems

Apr 24, 2026
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Grafana Labs logo
Full-time|Remote|Spain (Remote)

Grafana Labs is a pioneering, remote-first company known for its open-source innovation. With over 20 million users worldwide utilizing Grafana, our acclaimed visualization tool tracks everything from environmental changes to vital medical devices. Our dashboards are iconic, having been featured at events ranging from NASA launches to the Tour de France. We empower over 3,000 organizations, including industry giants like Bloomberg, JPMorgan Chase, and eBay, to navigate their observability strategies through our Grafana LGTM Stack, which can be fully managed with Grafana Cloud or self-managed with the Grafana Enterprise Stack, both offering scalable metrics (Grafana Mimir), logs (Grafana Loki), and traces (Grafana Tempo).As we experience rapid growth, we remain committed to our core values: a robust open-source foundation, a collaborative global culture, and a dedication to impactful work. Our team excels in an environment driven by innovation, where transparency, autonomy, and trust are paramount.If you find this role intriguing, don't hesitate to apply, even if you don't meet every single requirement. This could be a pivotal moment in your career.Senior Backend Engineer - AlertingThis is a remote opportunity, and we welcome applications from Spain.The Opportunity:The Grafana Alerting team plays a vital role in the Grafana open-source project (link), dedicated to delivering comprehensive alert management solutions. Our backend team collaborates closely with clients and Grafana Cloud teams to ensure alerting operates seamlessly, whether on-premises or in the cloud.Our work encompasses a wide array of projects, including:Developing distributed systems to enhance the ingestion and delivery of Prometheus-based alerts.Standardizing alert setup and delivery for both Grafana and Prometheus-based alerts.Building distributed systems to efficiently evaluate Grafana-managed alerts, achieving over 500 evaluations per second in production.Grafana Alerting is trusted by leading organizations worldwide, safeguarding crucial medical apparatus and critical infrastructure. We thrive...

Apr 7, 2026
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Grafana Labs logo
Full-time|Remote|Spain (Remote)

Join Grafana Labs, a pioneering force in remote-first, open-source software solutions. With over 20 million global users, our acclaimed Grafana visualization tool empowers individuals and organizations to monitor a wide array of metrics, from environmental changes to everyday operations. Our dashboards have made headlines across prominent platforms, including NASA, Minecraft HQ, Wimbledon, and the Tour de France. We proudly support over 3,000 enterprises, such as Bloomberg, JPMorgan Chase, and eBay, in enhancing their observability capabilities via the Grafana LGTM Stack, which can be utilized through either Grafana Cloud for managed services or Grafana Enterprise Stack for self-managed solutions, both offering comprehensive support for metrics (Grafana Mimir), logs (Grafana Loki), and traces (Grafana Tempo).As we rapidly expand, we remain committed to our unique principles: a rich open-source heritage, a globally collaborative culture, and a dedication to impactful work. Our team flourishes in an environment driven by innovation, where transparency, autonomy, and trust are at the core of our operations.If this role resonates with you, we encourage you to apply even if you don't meet every single requirement. This could be a transformative opportunity for your career.Staff Backend Engineer - Adaptive TelemetryThis position is open to candidates based in the UK, Germany, Spain, Ireland, and Sweden.The Opportunity:What is Grafana Cloud?Grafana Cloud is our versatile observability platform that seamlessly integrates metrics, logs, traces, and profiles with Grafana. It empowers our clients to harness the best open-source observability tools, including Prometheus, Mimir, Loki, Tempo, and Pyroscope, without the burden of managing and scaling their own observability infrastructure.The Databases department is responsible for managing the telemetry databases, including Mimir for metrics, Loki for logs, Tempo for traces, and Pyroscope for profiles. Our databases are offered as a Cloud service that supports Grafana Cloud.Adaptive Telemetry GroupThe Adaptive Telemetry Group is focused on developing innovative solutions that enhance the telemetry experience for our clients.

Feb 12, 2026
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Airapps logo
Full-time|On-site|Barcelona

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

Apr 29, 2026
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qonto logo
Full-time|Remote|Barcelona

Our Mission: Empowering small and medium-sized enterprises (SMEs) to flourish in their business endeavors by providing Europe's premier financial workspace. We integrate top-tier tools such as seamless invoicing, spend management, and pre-accounting with attentive 24/7 support, all aimed at simplifying financial processes for businesses.Our Journey: Established by Alexandre and Steve in July 2017, Qonto has swiftly earned the trust of over 600,000 customers. With our dedicated team of more than 1,600 Qontoers, we've been honored in the LinkedIn Top Companies French ranking!Our Values:Customer Focus | We prioritize the needs of our customers above all.Ownership | Take responsibility for your work and drive results.Teamwork | Collaborate effectively to achieve common goals.Mastery | Strive for continuous improvement and excellence.Integrity | Uphold ethical standards and respect everyone.Our Beliefs: At Qonto, we are dedicated to cultivating an inclusive environment where all individuals can excel. We evaluate candidates solely based on skills and potential, and we proudly support diversity within our workforce, comprising 55% international team members, 44% women, and 20% parents. Join us in fostering a workplace that embraces diversity and individuality.Learn about our initiatives for a discrimination-free hiring process.

Jul 28, 2021
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Fortis Games logo
Full-time|Remote|Remote - Spain

About UsAt Fortis Games, we strive to create exceptional gaming experiences that unite players, while also transforming the gaming industry. Our focus is on fostering a sense of community and belonging, both within our games and among our team. We aim to build meaningful connections through the communities we create, generating unforgettable moments. Our commitment to diversity, equity, and inclusion means that everyone’s unique skills and backgrounds are valued, contributing to our innovative game development process.As a dynamic start-up led by industry veterans, Fortis Games offers you a unique opportunity to significantly influence our products and the company's trajectory. If you are passionate about solving complex challenges with effective communication and a collaborative mindset, you might just be the perfect fit for our team.Role OverviewIn your role as a Staff Backend Engineer at Fortis, you will play a vital part in developing our exciting Original IP, guiding it from initial concept through to launch. You will work in close collaboration with talented game designers, artists, and fellow engineers to design, implement, and deliver a large-scale multiplayer experience that will leave a lasting impression on players.Key ResponsibilitiesDevelop and enhance game features from prototyping to live operations, ensuring quality and stability at every stage of the lifecycle.Design, implement, and maintain scalable CI/CD pipelines to optimize development and deployment workflows.Analyze backend systems to identify and resolve complex bugs and performance bottlenecks.Conduct backend load testing to ensure the infrastructure can support high player engagement and peak activity.Collaborate with client-side engineers to create secure, server-authoritative gameplay mechanics.Establish and maintain DevOps workflows in a cloud environment, primarily utilizing AWS services.Produce clear and well-organized technical documentation to communicate design choices and system architecture to the team.Contribute to the development of studio-wide engineering standards by adhering to and shaping best practices in code quality and guidelines.

Mar 13, 2026
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resilientco logo
Full-time|On-site|Spain

About the Role resilientco is looking for a Senior PHP Backend Engineer based in Spain. This role focuses on building and maintaining backend systems that support core applications. The work centers on PHP and requires experience designing reliable solutions for modern software products.

Apr 16, 2026
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Fever logo
Full-time|Remote|Spain

Welcome to Fever!We are Fever, the premier technology platform dedicated to culture and live entertainment.Our goal? To make culture and entertainment accessible to everyone. Leveraging our innovative technology and data-driven strategies, we are transforming the way audiences engage with live events. Each month, our platform encourages over 300 million individuals across more than 40 countries to explore unforgettable experiences while equipping event creators with the tools to expand, innovate, and elevate their offerings.Our achievements? Collaborations with industry giants like Netflix, F.C. Barcelona, and Primavera Sound, the presentation of internationally recognized experiences, and backing from several prominent global investors! Impressive, right?To realize our vision, we seek talented individuals with a proactive approach who are keen to shape the future of entertainment!Are you ready to join us on this journey?Now, let’s dive into the specifics of this role and how you will contribute to Fever’s mission.

Feb 8, 2026
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airapps logo
Full-time|On-site|Barcelona

airapps is hiring a Backend DevOps Engineer in Barcelona. This position focuses on improving how development and operations work together to support backend systems. Role overview The Backend DevOps Engineer will help refine and optimize processes that connect software development with IT operations. The goal is to create smoother workflows and support the reliability of backend infrastructure. What you will do Work closely with team members to streamline development and deployment pipelines Identify and address challenges in backend operations Contribute ideas to enhance backend systems and processes What we look for Motivation to improve backend development and operations Interest in solving technical challenges Ability to collaborate with a team in a growing company

Apr 28, 2026

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