Top Software Engineer Jobs in Spain

Develop and maintain open-source, silicon-optimized AI/ML inference application packages (Inference Snaps) for Linux/Ubuntu Core. Debug, write high-quality code, review upstream contributions, secure and optimize local inference deployments across embedded devices to gateways, and collaborate with a distributed team and stakeholders.

Design, implement, and maintain cross-platform C++ features for Multipass on macOS and Windows. Lead architecture, mentor peers, write high-quality tested code, review contributions, debug user issues, collaborate with a distributed team, engage the open-source community, and support customers.

Develop and maintain ABAP solutions in S/4HANA Cloud, own features and interfaces, integrate SAP with Make/Node/Python/Retool and the data warehouse, work directly with Finance stakeholders, investigate root causes, and learn modern SAP patterns (RAP, BTP, Released APIs).

Design and build scalable backend systems for PlanetScale's database platform (Vitess/Postgres), collaborate on distributed systems challenges, work autonomously and with customers, optimize performance, and mentor engineers while operating systems at production scale.

Design and implement complex customer-facing frontend features using TypeScript and React. Provide technical leadership, mentor junior engineers, drive frontend architecture and best practices, improve performance and accessibility, partner with product/design, integrate with backend APIs, and manage technical debt and scalability.

Design, develop, and maintain scalable Python/Django backend services and RESTful APIs for financial products. Implement data models, write tests, optimize performance, ensure availability and security, participate in code reviews, and collaborate with cross-functional teams to deliver features and maintain production systems.

Design, implement, and operate scalable, multi-cloud distributed infrastructure and core services (TypeScript, Kotlin, Go). Optimize compute, storage, networking, and observability; support event-driven architectures; own end-to-end deployment and production reliability; implement disaster recovery and business continuity; collaborate with engineering, AI and security researchers to enable high-velocity product development.

Develop and maintain the JetBrains Runtime to ensure IDEs run fast and render well. Provide low-level support for UI frameworks (Swing, Compose for Desktop), work on OpenJDK projects, implement hardware-accelerated rendering (Metal/Vulkan/OpenGL/D3D), fix JBR issues, and optimize/refactor cross-platform system UI code for Windows, macOS, and Unix.

Join a hybrid London-based team to build full-stack systems that accelerate foundation model research and deployment. Responsibilities include backend and frontend development, prototyping, CI/CD and deployment pipelines, data pipelines, 3D geometry processing and tooling for model evaluation, and close collaboration with research, ML, and infrastructure teams in fast-moving, ambiguous environments.

Contribute to desktop and cloud reality-capture software by implementing features and bug fixes in C++. Write clean, tested code, assist debugging, participate in code reviews and Agile ceremonies, and use tools like Git, JIRA, and CI/CD while learning from senior engineers.

As a Software Engineer on the Engineering Efficiency team, you will develop tools to streamline processes and enhance productivity for Qonto's engineers. Your role includes measuring success and ensuring quality while maintaining end-to-end ownership of deliverables.

Build and iterate on practice-first learning experiences and AI tutor features. Contribute to architecture, review code, debug and unblock teammates, and collaborate closely with Product and Design to deliver high-quality learning products.

Build and own end-to-end payments and financial systems for salon partners: reconciliation, invoicing, transaction history, pay-ins/payouts, and internal tooling. Work across backend (Java/Spring Boot) and frontend (React/TypeScript), ensure platform reliability, support ops/compliance teams, and drive data-informed experiments.

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.

As a Software Engineer at Alan, you will develop a full-stack health platform that leverages AI for personalized health insights, integrating various data sources and creating a mobile-first experience that enhances user engagement and optimizes health management.

The Senior Golang Backend Software Engineer will enhance messaging features, collaborate on cross-functional projects, and help build a unified ticketing system within a multicultural engineering team.

Join the Backend team to improve and maintain software tools, develop clean code, troubleshoot applications and collaborate with a diverse team.

The Software Engineer will join the Frontend team to improve and maintain software tools, develop user interfaces, and collaborate with team members on coding standards and new features.

Build and deploy AI-driven applications, collaborate with teams, empower users with data insight, drive continuous improvement, and contribute to team growth.

The role is for a Graduate Software Engineer to join the Backend team, focusing on software development and learning in a fast-paced environment.

Design, build, and maintain cloud-native .NET applications using event-driven architectures and message brokers. Implement strong SQL-backed data models, IaC, and CI/CD pipelines. Prioritize observability and scalable system design while mentoring junior engineers and leading small initiatives. Communicate effectively in English.

The Software Engineer will build database infrastructure, solve complex distributed systems challenges, and work directly with customers to provide technical solutions.

As a Mid-Level Backend Engineer, you'll enhance the reliability, observability, and scalability of the EVC platform by building API integrations, improving system performance, and strengthening infrastructure.

The Fullstack Software Engineer will build and manage scalable systems for insurance and healthcare services, ensuring efficient coverage customization and contract management across multiple countries.

The Fullstack Software Engineer will develop the contract lifecycle platform for Alan's B2B insurance business, focusing on renewals, compliance, and user experience through a unified tech stack across multiple countries.