Top Software Engineer Jobs in Barcelona

As a Backend Software Engineer, you will develop scalable applications using Go, Elixir, or Ruby, while collaborating with teams on architecture and reliability improvements. You will mentor junior developers and ensure code quality through peer reviews and continuous delivery practices.

As a Fullstack Software Engineer at Alan, you'll design and build healthcare applications, streamline operations, mentor peers, and shape product decisions in a collaborative environment.

Develop features for the AI platform, create API endpoints, debug issues, perform code reviews, and maintain documentation, while working in a collaborative environment.

As a Senior Elixir Software Engineer, you will maintain code, develop new features, review code, manage support requests, and participate in technical discussions.

As a Staff Software Engineer, you'll shape technical strategy, build integrations and services, lead operational processes, and mentor your team, ensuring high-quality code and fostering collaboration across teams.

As a Staff Full Stack Software Engineer, you'll guide technical strategy, mentor engineers, and ensure quality in full stack development while collaborating across teams.

Lead architecture and implementation of platform modernization from a .NET monolith toward a unified Java/Spring stack. Design zero-downtime migration patterns, build and transition services, collaborate with product and distributed teams, implement observability with Grafana and tracing, and leverage agentic programming tools to accelerate refactoring and development.

Design, build, and maintain production-grade Go services and Kubernetes operators to provision and govern database and streaming resources across AWS and GCP. Improve scalability, reliability, automation, and developer experience for distributed systems and streaming ecosystems while collaborating with product, security, and engineering teams.

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.