Top Software Engineer Jobs in Barcelona

Design, build, and scale backend services for a high-volume distributed tracing pipeline. Work on distributed system challenges, create automation and tooling, participate in architecture, collaborate with product teams, use DevOps practices and on-call rotations, and apply AI tools to accelerate development.

Build and maintain front-end features and developer-facing tooling for New Relic One using modern JavaScript/TypeScript. Select frameworks, produce performant CLI tools, automate developer tasks, collaborate on UI best practices, and implement CI pipelines and testing.

The Software Engineer will join a product squad to develop and maintain functionalities on the 360Learning platform, focusing on JavaScript technologies and clean architecture.

Build scalable backend systems and data pipelines to power consumer credit reporting. Partner with Product, Compliance, Servicing, and Credit teams to design, deliver, monitor, and operate accurate reporting systems, including on-call responsibilities. Develop robust, well-tested code in Python or Kotlin using distributed systems patterns and technologies like AWS, MySQL, and Spark.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

Lead full-stack development for automated finance and expense reconciliation systems, designing scalable architectures, implementing frontend and backend solutions, improving observability and SRE practices, ensuring security and compliance, mentoring engineers, and coordinating cross-team deliverables to deliver high-quality financial integrations and automation.

As a Senior Software Engineer, you'll lead the billing team's technical projects like tax integration and invoice automation while ensuring engineering excellence, mentoring peers, and shaping technical standards.

The Staff Software Engineer will own technical vision across teams, contribute hands-on, and lead initiatives to enhance the platform's reliability and capability, collaborating across functions.

The Senior Software Engineer will develop software solutions, mentor juniors, collaborate on projects, and integrate GenAI features within a team environment focused on cancer research.

The Senior Software Engineer will take ownership of the entire lifecycle of features, working on backend and frontend solutions in the Flights team, enhancing platform reliability and user experience while mentoring less experienced colleagues.

The role involves developing and maintaining embedded C code for HVAC control systems, participating in debugging, testing, and ensuring compliance with coding standards.

The Software Engineer will design and develop software architectures, solve complex challenges, lead technical directions, and collaborate with different teams to optimize efficiency and impact.

As a Staff Mobile Engineer at Joko, you will lead mobile application development using React Native, focusing on scalability, performance, and user experience while collaborating with cross-functional teams.

Design, build, and maintain backend integrations connecting a public safety platform to third-party systems (911 centers, state DBs, agency systems). Implement integration workflows in Java/Spring Boot, develop REST/SOAP/GraphQL APIs, improve RMS/CAD/Booking data pipelines, write tests, debug production issues, document solutions, and collaborate across teams to deliver secure, scalable cloud-based integration services.

As a Senior Software Engineer at Perk, you'll own feature lifecycles, contribute to system architecture, mentor colleagues, and prioritize engineering excellence through collaborative, AI-driven development across teams.

As a Senior Software Engineer, you will design and maintain integration systems, manage user provisioning, optimize integrations, and collaborate with cross-functional teams and enterprise customers.

Develop and optimize Go-based backend systems for an e-commerce platform. Collaborate with QA, refactor code, improve performance and stability, perform code reviews, and document software solutions.

As a Senior Tech Generalist, you'll build and maintain end-to-end systems, improve scalability, and ensure reliable financial operations while mentoring others in a dynamic team environment.

The Software Engineer role involves developing high-quality web and mobile applications, collaborating with cross-functional teams, and ensuring core engineering practices while maintaining a strong user focus.

As a Software Engineer, you'll build internal tools and integrations to improve company efficiency, translating business needs into technical solutions.

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, develop and ship features and integrations for restaurant software (TheForkManager). Participate in planning, technical analysis, maintenance, bug fixes, mentor junior engineers, influence technical decisions, and engage with stakeholders and customers to gather feedback.

Join a growing team as a Junior Java Software Engineer, designing and coding Java applications, participating in Agile development, and ensuring code quality through TDD.

The Senior Developer will design, develop, and maintain software solutions in Golang, collaborating with cross-functional teams to ensure code quality and system reliability while adhering to best practices.

Lead organization-wide software and AI engineering strategy, architect large-scale data and LLM integrations, drive deployment and CI/CD practices, mentor technical leaders, and convert prototypes to production while ensuring AI evaluation, observability, and high code quality.