Top Software Engineer Jobs in Barcelona

Seeking a Senior Software Engineer to drive backend services, contribute to architecture, and ensure high-performance systems using Golang and modern technologies.

As a Senior Software Engineer, you'll design, develop, and maintain Golang applications, optimize performance, and lead architecture projects, ensuring high quality and collaboration with teams.

Design, develop, and deliver high-volume, low-latency payment microservices in Java. Implement new features, optimize performance, ensure testable, robust code, and drive continuous improvement.

Responsible for designing, developing, and delivering high-volume, low-latency payment applications. Contribute across the development lifecycle, write testable code, ensure design compliance, and drive continuous improvement and performance optimizations.

Lead architecture and delivery of scalable web and AI platforms for B2B and B2C products. Balance hands-on development with technical strategy, mentor engineering staff, reduce technical debt, and collaborate with Product, Editorial, and Marketing to solve large-scale, ambiguous problems.

The Senior iOS Engineer will enhance modular architecture, lead feature delivery, strengthen testing, improve observability, and mentor team members.

As a Senior Software Engineer, you will architect the future of the platform, modernizing systems, and collaborating on backend solutions while ensuring observability and high-quality standards.

The Senior Full Stack Engineer will develop production-grade code, mentor team members, and implement solutions for high traffic, using technologies like JavaScript and Python.

The Software Engineer will collaborate on backend technology products, building and supporting Monzo's banking platform, focusing on customer outcomes and efficient software development.

Design, build, and maintain QA automation frameworks, test suites, and tools; debug test failures; collaborate with engineering and cross-functional teams to translate requirements into technical specs; improve test coverage and efficiency; mentor team members and share quality best practices across the organization.

Develop and maintain the backend of the Lending product at SumUp, improving functionality, performance, and scalability while integrating with external partners.

The Software Engineer will design and develop scalable backend systems, optimize services, and ensure infrastructure performance, security, and compliance while collaborating with cross-functional teams.

The role involves designing and implementing payment services, writing efficient backend code, and collaborating with cross-functional teams for seamless integration in a large scale distributed system.

The Senior Software Engineer will design and develop production-grade AI systems, APIs, and frameworks, collaborating with cross-functional teams while optimizing performance and reliability.

As a Senior iOS Developer, you'll develop and maintain iOS applications, implement best practices, collaborate with cross-functional teams, and oversee app performance.

Responsible for managing essential services in the Comms Platform, ensuring timely communication to customers, leading team goals, and fostering quality and ownership within the team.

The role focuses on enhancing the developer experience at Workato by optimizing CI pipelines, supporting engineers, and creating Kubernetes manifests, requiring strong collaboration and communication skills.

The Sr. Software Engineer will develop cloud-native APIs, mentor junior engineers, participate in technical decisions, and drive adoption of DevOps practices.

Design, implement and maintain high-volume, low-latency payment microservices across the full development lifecycle. Write testable, efficient code, optimize performance, work on database tuning, and propose architectural improvements for mission-critical payments systems.

The Software Engineer will focus on embedded software development, integrating real-time operating systems, and supporting application teams. Responsibilities include developing, testing, and maintaining documentation for software modules, and ensuring production quality in collaboration with the operations team.

Seeking a Software Development Engineer in Test (SDET) to design and implement automated testing frameworks ensuring application reliability and performance, working closely with developers and product teams.

Join the 2026 Tech Grad Program as a Junior Backend Engineer, focusing on backend development using Java, Golang, and Python with mentorship from experienced engineers.

Develop backend applications for mobile games, collaborating with various roles to ensure high quality, performance, and scalability. Engage in code maintenance and documentation while contributing to tech strategy.

The Software Engineer will develop features across front-end and back-end, write scalable code, and troubleshoot software while collaborating closely with Product and Engineering teams.

The role involves building self-service platform services using Go, automating operational workflows, scaling Kubernetes, and ensuring reliability in cloud environments.