Senior Backend Software Engineer - Merchant Data Platform (EU)

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.

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.

As a Senior Backend/Platform Engineer at causaprima, you will be responsible for the foundational platform utilized by our agents. Your expertise will enhance our event-driven architecture, streamline data pipelines, integrate with customer accounting systems, and ensure that our infrastructure is reliable, auditable, and efficient.Key ResponsibilitiesEvent Store Management — Design and maintain an append-only PostgreSQL database featuring tamper-evident hash chaining, real-time event distribution, agent replay, recovery capabilities, and schema versioning.Cryptographic Signature Infrastructure — Establish key management and signature verification systems for all agent events while implementing approval chains for external actions.Workflow Constraint Engine — Develop a gateway to verify authorization for any external actions including emails, payments, or API calls.PII Vault & GDPR Compliance — Create isolated, encrypted storage solutions for personal data, ensuring compliance with the right to erasure and data residency requirements.Multi-Tenancy Management — Implement row-level security and tenant isolation across all data stores, including tenant-scoped LLM API keys.Authorization Framework (Cerbos) — Utilize attribute-based access control for both agents and humans, ensuring deterministic policy evaluation where LLMs do not make authorization decisions.MCP Security Layer — Develop authentication, capability-based scoping per partner, and rate limiting for the Model Context Protocol endpoint.Database Architecture — Focus on PostgreSQL schema design, indexing strategies, performance tuning, and read replica topology.

Join Aircall as a Senior Backend/Platform Engineer, where you will play a crucial role in enhancing our platform's infrastructure and backend systems. You will collaborate with cross-functional teams to design and implement scalable solutions that ensure seamless communication for our users. If you are passionate about crafting high-performance systems and thrive in a dynamic environment, we would love to hear from you!

Ebury empowers ambitious businesses to achieve global growth, and we apply this same philosophy to our team members. We promote innovation, collaboration, and problem-solving while creating an inclusive environment where everyone feels valued and supported to succeed.If you’re a team player eager to revolutionize the way businesses function on a global scale, we invite you to connect with us. Ebury is excited to help accelerate your career and enable you to shape the future.Senior Data Platform EngineerMadrid Office - Hybrid: 4 days in the office, 1 day working from homeBecome a key part of our Data Team at Ebury's Madrid Office.Our ambitious growth strategy hinges on the success of our Data team, and we are looking for a Senior Data Engineer to join our Data Platform team! Our goal is to develop, maintain, and enhance Ebury’s Data Platform focusing on scalable, robust, and innovative frameworks.In your role as a Senior Data Platform Engineer, you will collaborate with your team to develop and improve our Data Platform.

As a Senior Backend Software Engineer at Blacklane, you will join one of our autonomous agile teams. Your contributions will enhance the services that drive our innovative platform, improve our back-office systems, and address integration challenges that enable our business partners to seamlessly connect with Blacklane.Our tech stack comprises Ruby, Go, TypeScript, and Java services, designed through Domain-Driven Design (DDD). These services are deployed within our Kubernetes cluster and communicate via domain events using SQS and Kafka. We utilize a variety of data storage technologies, including PostgreSQL, MySQL, Elasticsearch, Redis, and DynamoDB. For infrastructure and cloud resources, we primarily leverage AWS, managing provisioning through Terraform.

About seQuraseQura is at the forefront of innovative payment solutions, enabling merchants to enhance customer acquisition, conversion, and retention seamlessly.Our tailored solutions cater to diverse sectors including Retail, Education, Optics, and Travel, making significant strides in sales performance. We empower consumers with smart shopping options that offer value, convenience, and flexibility, providing new payment experiences that enable savings, access to interest-free credit, and manageable installment plans of up to 24 months.Founded in the vibrant city of Barcelona, seQura is a privately-owned fintech in a dynamic scale-up phase. With a presence in Southern Europe and Latin America, we are experiencing remarkable growth, achieving over 50% CAGR and exceeding 100 million in Annual Recurring Revenue. Our reputation is bolstered by the trust of over 5,000 businesses and 2 million shoppers, with an impressive NPS of 87%, a Trustpilot rating of 4.5/5, and a Glassdoor rating of 4.3/5.About the Role We are seeking a seasoned Senior Data Platform Engineer to join our Data Platform team, where you will play a critical role in scaling seQura’s data ecosystem through innovative automation, robust platform capabilities, and intuitive self-service tooling.Your primary mission will be to advance our Data Platform as a Product, empowering software engineers, analysts, data scientists, and business teams to harness data effectively throughout its lifecycle—from ingestion to discovery—while embedding security, governance, and reliability into the platform by default. You will enable teams across the organization to access trusted data and make informed, data-driven decisions.This position extends beyond merely constructing data pipelines; you will be responsible for designing the guardrails, abstractions, and platform capabilities that facilitate other teams in building and scaling their own data products safely and efficiently.You will thrive in our cloud-native AWS environment, where Infrastructure as Code, observability, and automation are foundational engineering principles.Challenges You'll Tackle ...

Join our innovative Engineering team at Veriff, where we are addressing the online identity crisis with cutting-edge solutions. As a Senior Software Engineer on our Data Platform team, you will play a pivotal role in managing our database infrastructure while ensuring the performance and reliability of our systems. Collaborate with a passionate team to develop tools that enhance the experience of Software Engineers interacting with our database platform. Your expertise will be crucial in navigating the complex challenges of our fast-paced market. Your impact will include:Enhancing and maintaining our database infrastructure management tools primarily using Python.Contributing to the development of background processing infrastructure.Improving database deployment tools to streamline operations.Ensuring an excellent developer experience for all database users.Guaranteeing the scalability and reliability of our data architecture.Writing Terraform modules and configuring infrastructure.Participating in on-call shifts to support our systems.You are the ideal candidate if you possess:Proficiency in Python.Experience with cloud infrastructure, ideally AWS.Networking expertise.Familiarity with Terraform.Experience with large databases, especially PostgreSQL, and complex replication patterns.Fluency in English, both written and spoken.Additional qualifications that will make you stand out:Experience with Ansible and/or Database CI.

Ebury empowers ambitious businesses to achieve global expansion, mirroring this ethos in our approach to our team. We champion innovation, collaboration, and problem-solving, creating an inclusive environment where everyone feels valued, supported, and empowered to thrive.If you're a collaborative professional eager to revolutionize global business operations, connect with us. We would be delighted to discuss how Ebury can accelerate your career trajectory and enable you to influence the future.Join Our Data Team as a Senior Data Engineer - AI PlatformHybrid Work Model: 4 days in the office, 1 day remoteBecome a part of Ebury's Data Team in our Madrid or Málaga office.The success of Ebury's strategic growth plan heavily relies on our Data team, and we are on the lookout for a skilled Data Engineer - AI Platform to enhance our Data Platform Engineering team!Our mission centers on developing, maintaining, and enhancing Ebury's Data Platform, with a current focus on constructing the Agentic Data Plane (ADP): a cohesive, governed interface layer for AI and agentic products that simplifies data communication and access while ensuring governance, lineage, traceability, and full replayability.As an AI Platform Engineer, you will collaborate closely with the Data Platform team and cross-functional domain teams to design and deliver the platform capabilities that allow Ebury to safely deploy AI and agentic products at scale.What We Offer:Attractive salary and benefits packagePerformance-based discretionary bonusOngoing personal development through training and certificationSupportive of Open Source principles, encouraging contributions to both internal and external projects

Join us at Fever, the premier tech platform dedicated to enhancing cultural and live entertainment experiences globally.Our mission is to democratize access to culture and entertainment. Utilizing our advanced technology and data-driven strategies, we are changing how audiences engage with live events. Every month, over 300 million individuals across more than 40 countries discover unforgettable experiences on our platform, while we empower event creators to innovate and grow their reach.We proudly collaborate with industry giants such as Netflix, F.C. Barcelona, and Primavera Sound, delivering internationally acclaimed experiences and backed by leading global investors. Impressive, isn’t it?To further our mission, we seek exceptional talent with a proactive mindset, eager to contribute to the future of entertainment. Are you ready to be part of this journey?The engineering team is the backbone of our user-friendly iOS and Android applications and website, responsible for developing, enhancing, and maintaining all Fever services, ensuring that users have outstanding experiences.About the RolePosition: Senior Software Engineer (Backend Platform)Location: SpainWe are looking for a highly skilled software developer with a proven track record of delivering exceptional results. A person who values code quality and emphasizes doing things correctly, not just completing tasks.Collaborate within an agile, cross-functional team alongside other talented software engineers and product designers.Develop production-quality code and implement solutions capable of handling significant traffic.Mentor team members through code reviews, architecture design sessions, and pair programming.Receive mentorship from colleagues in areas where you seek to grow.During your onboarding period, you will:Engage in a structured program designed to facilitate a smooth transition into your role.

Location: Madrid Office About Aircall Aircall builds an AI-driven customer communications platform used by over 22,000 businesses worldwide. Our product brings together voice, SMS, WhatsApp, and AI features in a single workspace, helping teams boost revenue, resolve issues faster, and scale their operations efficiently. Headquartered in Paris, Aircall has a strong global footprint with offices in Seattle, Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our company is growing quickly, supported by leading investors and advances in AI across our product lines. Our Culture We focus on customer satisfaction, data-driven decisions, and meaningful results. Team members are encouraged to take ownership, keep learning, and act quickly but thoughtfully. Collaboration, trust, and impact shape our daily work. About the New Product Unit Aircall is launching a New Product Unit dedicated to advancing autonomous sales. The team is building an AI Orchestration Layer that records and understands customer interactions across calls, video, email, and WhatsApp. This system will automate sales workflows such as CRM updates, follow-ups, task creation, and coaching insights. Our long-term vision is a self-optimizing Sales OS powered by specialized AI agents working together to improve revenue processes. Role Overview: Senior Backend Software Engineer (Python) This position calls for an experienced backend engineer with strong Python skills, ready to work beyond traditional backend boundaries. The role suits someone who values both clean architecture and practical progress, and who can balance high-quality work with the need for speed in a startup setting. What You Will Do Tackle complex technical challenges, including distributed systems, AI orchestration, architecture, performance, and scalability Contribute to the design and implementation of backend systems for the AI Orchestration Layer Work closely with product and engineering teams to deliver new features Iterate quickly, shipping solutions and learning from feedback Who Will Thrive Engineers who enjoy solving difficult problems and making architectural decisions Those who can dive deep into technical details while keeping an eye on rapid delivery People who take pride in their work and appreciate the pace of a growing company

Full-time position.We welcome applications from candidates located in the UTC-1 to UTC+2 time zones for this remote role.About LandbotWith a presence in over 150 countries, Landbot provides a platform that empowers organizations to craft outstanding chatbot and AI agent interactions across multiple channels including the Web, WhatsApp, and Messenger.At Landbot, we are assembling a high-performing team that merges engineering excellence, a product-focused mindset, and a passion for customer satisfaction. We uphold the belief that quality and speed work in tandem — and we seek a Senior Platform Engineer to assist us in scaling our platform and making a significant impact.About the TeamYou will be part of our Platform Engineering team, a small and dedicated group responsible for developing and sustaining the Landbot Engineering Platform, Data Platform, and Security initiatives.Our mission is to enable Landbot teams to deliver value more swiftly, reliably, and at scale.Our core team values include:Platform-as-product mentalityAutonomy and accountabilityCollaboration over gatekeepingAbout the PositionThe Role: This position amalgamates software development with systems engineering, focusing on developing platform capabilities while treating infrastructure as a product. You will design and implement developer-facing tools, services, and abstractions that empower application teams to operate efficiently while upholding reliability and best practices.As a Senior Platform Engineer, your responsibilities will include:Building and Maintaining the Internal Developer PlatformDesigning and implementing core platform services, APIs, and developer tooling using backend technologies.Creating abstractions and automation that enable application teams to deploy, scale, and manage services independently.Developing internal tools and services that enhance developer productivity and reduce operational burdens.Driving Observability and Data Platform CapabilitiesDesigning and implementing observability solutions (metrics, logs, traces) for real-time visibility and proactive issue detection.Contributing to data platform capabilities that allow teams to leverage data effectively.Establishing SLIs, SLOs, and error budgets to balance reliability with feature velocity.Enhancing Developer Experience and Driving Platform StrategyCollaborating with application teams (platform customers) to understand their workflows and challenges, gather feedback, and prioritize enhancements aligned with business objectives.Creating and maintaining documentation, runbooks, and knowledge bases to reduce knowledge silos and foster self-service.Driving decisions through written formats (RFCs, proposals, etc.) and facilitating open discussions.

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!

Join Our TeamAt Quadrivia, we are revolutionizing healthcare technology with Qu, a fully controllable and customizable AI assistant crafted by clinicians for clinicians. We tackle the pressing shortage of healthcare professionals by providing timely, personal, and dependable support for a variety of clinical tasks throughout the care continuum. Qu is tailored for healthcare providers, payers, and pharmaceutical companies, ensuring easy customization and seamless integration into existing workflows for optimal assistance across the care spectrum.Your ImpactAs a Senior Backend Software Engineer, you will architect and develop the robust backend systems that power the Quadrivia clinical AI platform. This includes building high-availability services, creating event-driven architectures, developing data pipelines, and establishing orchestration layers for our clinical AI agents.This position is highly technical and hands-on, playing a critical role in ensuring our systems' reliability, safety, and performance.

At Affirm, we are on a mission to transform the credit landscape, making it more transparent and consumer-friendly. Our innovative approach allows customers to make purchases today and pay over time, free from hidden fees and compounding interest.We are seeking a passionate and skilled Senior Software Engineer to join our Furnishing Platform team. In this role, you will be responsible for developing scalable systems and data pipelines that will enhance our consumer credit reporting capabilities. You will collaborate closely with Product, Compliance, Servicing, and Credit teams to create robust reporting systems essential for delivering accurate and timely data from Affirm’s diverse financial product portfolio to Consumer Reporting Agencies.As Affirm continues to grow rapidly, your contributions will be pivotal in scaling our products exponentially through the creation of world-class systems that align with our mission to provide honest financial products that improve lives.We are just getting started! Join us in building a trusted and beloved financial services brand. It’s going to be an incredible journey!

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.

At Datadog, we are revolutionizing how engineers monitor, secure, and scale their infrastructure and applications, driving reliability and performance for thousands of businesses. We process trillions of data points daily and address challenges related to scale, speed, and resilience. We are in search of seasoned backend engineers eager to take charge of vital services and enhance their expertise in distributed systems. If you have experience in building APIs, data pipelines, or backend tools, this position offers an opportunity to expand your influence while mastering the design and operation of high-scale, high-availability systems that underpin observability and security solutions utilized by engineers globally. At Datadog, we cherish our office culture—the relationships it fosters, the creativity it encourages, and the teamwork it cultivates. We embrace a hybrid work model, empowering our employees to achieve a work-life balance that suits them best.

At Veriff, we empower businesses to connect with trustworthy individuals online through our advanced identity verification technology. We verify over 10,000 government-issued documents from more than 190 countries, scaling our operations rapidly. This translates to millions of verified identities annually, ensuring online safety for countless users globally. We are committed to setting a new standard for trust on the internet.As a Senior Software Engineer, you will play a pivotal role beyond coding; you will design scalable architectures, mentor emerging engineers, and significantly impact our business performance. We seek innovative problem solvers to help us achieve our goals.The Platform Area addresses cross-domain business requirements via a unified platform infrastructure. The advancement of the Veriff Platform is essential to our sustained success. This platform enables us to swiftly adapt our technology to the fast-paced identity verification landscape while meeting the demands of our teams and clients for innovative solutions. The Veriff platform presents numerous technical challenges and opportunities for scalability, which are critical to maintaining our leadership in the industry.

Role overview Ebury is hiring a Senior Data Engineer for its AI Platform team in Málaga. This position is part of the Data Platform Engineering group, which is central to Ebury’s growth. The team is responsible for developing and maintaining the core Data Platform, with a current emphasis on building the Agentic Data Plane (ADP). The ADP acts as a unified, governed layer that connects AI and agentic products, streamlining data flow while maintaining governance, data lineage, traceability, and replayability. Location and work arrangement Primary location: Málaga (Madrid is also an option) Hybrid schedule: 4 days onsite, 1 day remote per week What you will do Collaborate with the Data Platform team and cross-functional domain teams Design and implement platform features for secure, scalable delivery of AI and agentic products Advance the Agentic Data Plane (ADP) to enhance data communication, governance, and traceability

Ebury is hiring a Senior Data Engineer - AI Platform to join the Data Platform Engineering team in Madrid or Malaga. This hybrid position requires working onsite four days each week, with one day remote. Team focus The Data team supports Ebury’s growth by building, maintaining, and improving the company’s Data Platform. The group works closely with business operations and leads projects that enable new AI initiatives. Key responsibilities Collaborate with the Data Platform team and other domain teams to design and implement new platform features. Develop the Agentic Data Plane (ADP), which serves as a unified, governed interface layer for AI and agentic products. Ensure the platform enables secure and scalable deployment of AI and agentic solutions. Contribute to systems that improve data access, governance, lineage, traceability, and replayability. Work arrangement Role based in Madrid or Malaga. Hybrid schedule: four days onsite, one day remote per week.