Top Software Engineer Jobs in Barcelona

Build and maintain couple-facing web applications (dashboard, checklist, budget) using frontend and backend stacks; collaborate with design, product, QA, and data to run A/B tests, ship features, and ensure performant, well-tested code.

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.

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.

The Lead Software Engineer will lead technical delivery for cross-team projects, mentor engineers, and ensure adherence to engineering standards while collaborating with product and engineering teams.

As a Senior Software Engineer, you will design and operate critical services for the Auth0 identity platform, focusing on security and reliability in a distributed cloud environment.

Develop cross-platform mapping APIs for mobile and desktop applications using C++. Collaborate with teams to ensure high-quality software development.

Own and build Python-based microservices and scalable AI tooling end-to-end. Design, deploy and debug distributed, cloud-native solutions (IaC, Kubernetes, serverless). Measure impact with metrics, troubleshoot complex cross-environment issues, and iterate proactively to deliver resilient, production-ready systems.

The Junior Software Engineer will design and implement data features, ensure code quality, and collaborate within a team to maintain reliable production systems.

As a Senior Software Engineer at Smadex, you'll design data pipelines, optimize high-throughput systems, mentor juniors, and ensure operational excellence.

You will set technical strategy, collaborate across teams, ensure operations, maintain high code quality, and develop talent on your team.

Rover seeks a Lead/Senior Software Engineer with 7+ years of experience, specializing in frontend technologies like ReactJs and Python. Responsibilities include building customer-facing products, mentoring team members, and promoting engineering best practices. The role includes collaboration on projects and a commitment to inclusivity and diversity in the workplace.

Join Mews as a Software Engineer in the Connectivity team to design, implement, and maintain backend services and public APIs, ensuring high reliability and performance while collaborating with partners and other teams.

Join the Engine team to build and maintain scalable backend applications in Ruby and GOlang, ensuring performance and reliability.

As a Senior Backend Software Engineer, you'll build scalable backend services, design production-grade APIs, and collaborate with product teams for optimal sales automation functionalities.

The JavaScript Software Engineer will build scalable web applications, optimize them, support existing applications, and develop new APIs. Collaboration with teams across the globe and communication with stakeholders are key responsibilities.

Emburse seeks a Software Engineer III to enhance enterprise SaaS applications, mentor developers, and improve software quality through collaborative and agile practices.

The Junior Software Engineer will join a mobile team to develop native Android applications using Kotlin Multiplatform, work on code quality, and implement functionalities while receiving mentorship and opportunities for growth.

As a Software Engineer, you'll develop software for Ceph and distributed storage, collaborating with a global team to enhance cloud solutions.

Design and implement ML platform capabilities: observability, cost and training efficiency, experimentation tooling, and SaaS-grade ML services in Python. Collaborate with Staff Engineer and SRE/DevXP to deliver production-ready, scalable, and developer-friendly infrastructure for data scientists.

Build and maintain backend-first features and integrations for Triptease's marketing channels. Work across the full stack (primarily backend), design scalable distributed systems, implement CI/CD on cloud platforms, collaborate closely with product teams, pair program, write tests (TDD), and contribute to squad strategy and product quality.

Seeking a Mid-Level .NET Software Engineer skilled in Cloud, SQL, Infrastructure as Code, and AI tooling with a focus on collaboration and professional development.

Design and implement core distributed systems at scale, solve performance and scalability issues, build horizontally scalable and event-driven components, collaborate cross-team, and participate in on-call rotation to address urgent incidents.

Build and maintain the Mews POS Android app using Kotlin and modern Android practices. Own end-to-end feature development, ensure performance, reliability, security, and observability, collaborate with product and design, ship frequently in an agile environment, and contribute to long-term technical health.

Canonical is hiring a Software Engineer to develop features for Kubernetes, focusing on operators and integrations while collaborating in a distributed team.