Top Software Engineer Jobs in Spain

Student internship to gain software engineering experience: research new technologies, solve customer problems, collaborate with teams, integrate solutions into XProtect products, and contribute to feature development and test automation within a multicultural development team.

Design, develop, and maintain UI platform features using TypeScript, React, RESTful APIs, microservices, and cloud-native technologies. Improve performance, scalability, reliability, and security; contribute to architecture and secure coding practices; develop automated tests; enhance CI/CD pipelines; participate in agile ceremonies and code reviews; and collaborate across engineering and product teams.

Design, build, and maintain UI platform features using TypeScript and React. Implement RESTful APIs, integrate with microservices, ensure performance, security, and compliance. Write tests, enhance CI/CD pipelines, participate in architecture discussions, mentor juniors, and contribute to cloud-native, scalable solutions.

Work on-site with government customers to design and build data-driven solutions. Responsibilities include full-stack engineering, data integration at scale, architecture design, coding, and collaborating with technical and non-technical stakeholders. Requires adapting quickly, independently owning projects, and deploying solutions that directly impact critical operations.

Design, build, and maintain backend collections systems to manage delinquent loans. Collaborate with product, risk, and engineering teams, deliver features in phases, support operations and on-call rotation, instrument monitoring, and participate in hiring and team growth.

Build and maintain backend collections systems to manage delinquent loans, implement recovery strategies, ensure high availability and reliability, collaborate with product and risk teams, participate in on-call rotation, write well-tested extensible code, and contribute to team growth.

Design, architect and deliver cloud-native microservices and front-end features using React/React Native. Collaborate cross-functionally to build clean, testable JavaScript/TypeScript code, apply modern React patterns, integrate with REST/GraphQL APIs, and implement end-to-end testing and consistent UI using design systems.

Build and maintain high-volume payment services, write testable code, improve reliability and performance, investigate production issues, collaborate across product and engineering teams, and explore AI-enabled engineering tools to boost productivity.

Design, build, and maintain complex, high-performance Angular frontend applications. Architect reusable component libraries and state management, integrate REST and real-time data, optimize performance and accessibility, write tests and participate in code reviews, and mentor junior engineers.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, including LLM inference infrastructure, RAG, AI agents, and evaluation/observability. Design and run experiments (A/B tests), optimize systems for production performance and reliability, and iterate rapidly with product and design partners.

Design, build, and operate a large-scale Kubernetes platform: ensure high availability and performance, automate platform delivery, develop custom Kubernetes Operators in Go, manage production incidents, and run Day 1/Day 2 cluster operations with Helm and GitOps tooling.

Build and evolve Circle Discover marketplace features: high-converting purchasing flows, algorithmic recommendations, content feeds, and listings. Work across a Ruby on Rails backend and React/Next.js front-ends, optimize performance and SSR/SSG, collaborate with designers and leaders, and improve codebase quality while shipping at pace in a distributed remote team.

Design, build, test and operate backend microservices in Java/Spring Boot for a fintech product. Collaborate with Product in Agile squads, design/evolve architectures (cloud/serverless), implement event-driven systems (Kafka), write tests, participate in code reviews and releases, maintain monitoring/alerting, and apply enterprise-authorized AI-assisted development responsibly to improve delivery and code quality.

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

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, maintain, and scale backend services for a high-volume distributed ingest and processing pipeline. Integrate AI agents into engineering workflows, create automation and tooling, collaborate with product teams, participate in on-call rotations, and champion observability and continuous workflow innovation.

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.

The Senior Software Engineer will design and develop full-stack applications, collaborating with teams to translate requirements into solutions, ensuring performance and reliability while mentoring junior engineers.

Work on Servicing International building purchase protection (disputes/refunds) and agent tooling. Contribute to web apps and backend APIs, collaborate with global teams, participate in on-call rotation, ship reliable scalable solutions, and engage in code reviews and growth activities.

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.

As a Software Engineer, you'll design and develop software solutions, solve technical problems, lead projects, and collaborate with product and operations teams.

Lead backend engineering for digital-asset integrations, building secure, scalable microservices on Kubernetes. Design event-driven architectures, integrate trading and custody systems, ensure regulatory controls, own delivery from estimation to production, write comprehensive tests, and collaborate with Product, Compliance, Risk, and Operations.

As a Senior Software Engineer, you'll enhance REDAPL, lead projects, focus on data ingestion and query pipelines, and ensure platform reliability.

Design, build, and maintain scalable full-stack systems for orchestration and automation. Collaborate with product, design, and engineering teams, ensure reliability, performance, and security, participate in architecture and code reviews, mentor junior engineers, and troubleshoot and optimize production systems.

Design, build, and operate scalable test platform capabilities (synthetic identities, test data seeding, mocking, deterministic validation, load testing). Improve reliability, observability, and automation of CI/test workflows, lead medium-to-large projects, own operational readiness, mentor engineers, and produce async technical artifacts to enable faster, safer developer validation loops.