Top Software Engineer Jobs in Spain

Be the hands-on technical owner of the LiteAPI product: design, implement, and operate backend/API infrastructure, lead technical decisions, work closely with product, stakeholders, and customers, and mentor engineers while shipping high-impact features in a fast-moving startup.

Senior backend engineer responsible for designing, building, testing, and maintaining production-ready Java-based services for a pricing tool. Work across full SDLC in an agile, self-organized team, contribute to architecture decisions, support frontend tasks, and improve infrastructure and automated tests.

Design, develop, and maintain Python and Go microservices for data ingestion and processing; integrate backend services with BigQuery and cloud data platforms; implement REST APIs; build scalable data processing pipelines using Apache Beam and Dataflow; test and troubleshoot distributed systems; review designs, estimate work, mentor junior developers, and drive performance and reliability improvements.

Design, implement, and optimize SQA integration and test platforms and CI/CD pipelines for embedded Radio ICs/SoC software. Develop automated test scripts, maintain traceability from requirements to test results, collaborate across hardware and software teams, and deliver high-quality, documented test solutions and quality metrics.

Build and maintain loyalty products: design and implement features, maintain team services and infrastructure, apply clean code and DevOps practices, work in microservices/event-driven architectures using Java/Kotlin (Python a plus), collaborate in Scrum and pair programming, and communicate fluently in English.

Senior backend engineer responsible for designing, implementing, testing, deploying and supporting microservices powering mobile apps. Collaborate in Agile teams, build CI/CD pipelines, apply DevOps practices, mentor juniors, reduce technical debt, and use cloud technologies (AWS, Docker, Kubernetes, Terraform) to deliver high-quality features for millions of customers.

Design, standardize, and scale enterprise integration solutions using APIs, messaging, and event-driven patterns. Evolve integration platform capabilities (API registry, templates, libraries), guide teams on integration best practices, help roll out event streaming (Kafka), improve observability and reliability, and apply AI to enhance integration development and governance.

Develop core backend components for a blockchain network, focusing on reliability and scalability, mainly using Rust. Ensure code quality through testing and debugging.

Design and build backend systems for Quadrivia's clinical AI platform, ensuring reliability, high availability, and compliance with healthcare regulations while collaborating with cross-functional teams.

The Sr Engineer will develop and maintain automation frameworks, integrate CI/CD systems, code review, and support testing environments while collaborating with various teams.

The Senior Software Engineer I at Emburse will develop software, mentor junior staff, enhance product quality, and contribute to system design, following Agile methodologies and improving user experience.

The Senior Software Engineer will design and develop high-quality web and mobile applications, ensuring code quality while collaborating with product teams and mentoring junior engineers.

The Senior Software Engineer (CRM) will manage the technical aspects of the CRM infrastructure, focusing on automations, data integrity, and integrations. They will collaborate with marketing and sales teams to enhance customer engagement through technology.

The Senior Full-stack Engineer will design and build features in TypeScript, driving projects with a product mindset and collaborating in a dynamic startup environment.

The Staff Software Engineer will lead technical direction, improving system design and mentoring others while writing code and collaborating across teams for a cloud-based generative coding platform.

The Lead Software Engineer will develop AI-powered software, focusing on backend systems, APIs, microservices, and collaborating in agile teams to deliver technical solutions.

The Lead Software Engineer will develop AI-powered software solutions, design backend systems, and collaborate with cross-functional teams to enhance AI capabilities.

As a Senior Software Engineer at Veriff, you'll architect scalable systems, mentor engineers, and drive business impact in identity verification processes.

The Software Development Engineer II will develop features, modernize applications, resolve defects, and contribute to architecture in a DevOps culture.

The role involves developing and maintaining COBOL applications, collaborating with teams, troubleshooting issues, and engaging in continuous learning.

Contribute to developing and optimizing a multi-currency accounting system, leading product initiatives, coaching team members, and enhancing existing services in a collaborative, global team.

Develop and maintain scalable backend services using Graph features; optimize systems performance and security; mentor team members; ensure compliance and quality standards.

Build foundational agent infrastructure for LLM-driven developer assistant: orchestration, tool execution, context management, evaluation, and trust/permissions. Ship reliable, observable backend systems, own core infra, participate in on-call, and mentor peers while launching agentic features to customers.

Design, build, ship, and own end-to-end product features across frontend, backend, and data. Translate ambiguous product requirements into reliable, well-tested systems; deploy, monitor, and maintain production services; participate in design and architecture, code reviews, and mentor peers while working closely with product and design teams.

Design and implement core cloud platform services, control-plane components, and internal APIs. Build platform abstractions and production-grade Go tooling, drive architectural initiatives (gRPC, eventing, cluster-api), improve scalability and developer experience, and support production incidents when needed.