Top Software Engineer Jobs in Barcelona

Evaluate and improve AI-generated code: compare and rank snippets, repair and refactor for correctness, efficiency, and style, and inject detailed feedback and test results into the RLHF training pipeline as an asynchronous remote contributor.

Review, rank, and improve AI-generated code across languages, focusing on Ruby. Repair/refactor code, provide detailed written justifications, and inject ratings/edits/test results into the RLHF pipeline to help train models.

Evaluate, rank, repair, and refactor AI-generated code to improve correctness, efficiency, and style; provide detailed written feedback for RLHF pipelines; and help maintain the code-evaluation and training workflow remotely.

Review, rank, repair, and refactor AI-generated code to improve correctness, performance, and style. Provide detailed written feedback and edits for RLHF pipelines, converting expert judgments into signals used to train models. Work asynchronously as a remote 1099 contractor.

Design, build, and maintain backend services for mobile tracking SDKs. Define efficient REST APIs with mobile-focused optimizations, ensure high-throughput low-latency processing, collaborate with mobile and tracking teams, own monitoring/alerting and performance profiling, and maintain high code and test quality.

Own availability and performance of mission-critical services, improve scalability and observability, build platform tooling, practice sustainable incident response, participate in on-call rotation, collaborate with product teams, and follow FinOps best practices.

The Senior Fullstack Software Engineer will guide system architecture, mentor junior developers, and integrate AI tools in software development, ensuring quality and performance across projects.

The System Software Engineer will maintain and optimize software components in C, troubleshoot Slurm issues, and provide technical support while collaborating with various teams on performance and reliability.

The role involves designing and maintaining web applications using C# and Vue.js, mentoring junior developers, and collaborating with teams to deliver features.

As a Software Engineer in the FinTech Tribe, you will develop financial infrastructure, collaborate on software solutions, and innovate using various technologies.

The React Software Engineer will design and develop React components, collaborate with teams, implement best practices, leverage AWS, and drive innovation in software development.

As a Fullstack Software Engineer, you'll build complex healthcare systems focusing on user experience, claims management, payment infrastructure, and fraud prevention. You'll work collaboratively in a high-growth environment using technologies like TypeScript and Python.

You will design and implement backend services using Python or Kotlin, support cross-functional collaboration, and enhance system reliability in fraud prevention.

As a Software Engineer in the Identity team at Veriff, you will maintain and enhance the Verification Platform, focusing on design, security, and performance. You'll collaborate with various experts and contribute to automation services using Python.

The role involves designing and implementing features, debugging, maintaining documentation, and collaborating with the community in the Mir graphics stack.

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.

As a Software Engineer, you will build and develop the Mindly product, focusing on user needs, implementing reliable code, and collaborating with cross-functional teams.

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

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.