Top Software Engineer Jobs in Spain

As a Staff Platform Engineer at Joko, you will lead platform efforts, ensure infrastructure reliability, enhance developer experience, and optimize costs, focusing on security and scalability while collaborating across teams.

Build and scale Base360.ai: design APIs, services, and cloud-native infrastructure; implement event-driven automations, AI-powered workflows, and integrations (Airbnb, Stripe, Twilio, OpenAI). Own projects end-to-end to automate operations, improve pricing and guest experiences, and enable global scaling.

Build and maintain backend components for a scale-out distributed CloudVision platform. Design architecture, implement services in Go/C/C++, write automated tests, and deploy via CD pipelines. Collaborate with product management and customers to define requirements for device management and network analytics.

Develop backend services, APIs and modern frontends; implement event‑driven architectures and cloud deployments; integrate AI/LLM-driven agents, maintain CI/CD pipelines, automated testing, and production monitoring to support customer care applications.

The Software Developer will lead a team for developing high-quality, bug-free security technology solutions, focusing on architecture, API integration, and compliance with best practices, while collaborating with internal and external stakeholders.

Build and ship end-to-end features and agentic automations for North, Cohere's AI workspace for finance. Integrate financial data sources, enforce data isolation and RBAC, collaborate with Product/UX/ML/Sales, work with finance customers, ensure reliability/security/auditability, and iterate on platform capabilities using AI where appropriate.

Build and maintain North's Agents & Automations platform: design and ship frontend and backend features, execution engine, integrations, debugging, observability, evaluation, and feedback systems to enable reliable AI-powered workflows.

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

Build high-throughput, low-latency Kotlin/Java microservices (RCS channel). Design scalable, well-tested systems, collaborate cross-functionally, deploy to cloud (AWS) using Docker/Kubernetes, and use Kafka/Redis and SQL/NoSQL for data handling and observability.

Senior engineer owning feature lifecycle: design, architecture, implementation, reliability, and cross-team impact. Lead architecture, SRE/observability, security practices, mentor engineers, and drive product-technical alignment using AI-augmented workflows.

Develop and maintain multi-platform motion control and communication libraries and GUIs for servo drivers. Implement advanced identification and tuning algorithms, optimize performance, produce internal architecture and design documentation, define test plans with QA, and collaborate closely with firmware teams to deliver robust motion control products.

Build and operate cloud platform services: implement features in production, own scoped projects from requirements to production, participate in design and code reviews, operate services including on‑call, automate repetitive work, and collaborate asynchronously with distributed teams.

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.

Develop and enhance MAAS core components, improve architecture, collaborate across teams, and ensure high standards in documentation and CI practices.

Own and improve the RustRover debugger across a C++ OS-specific backend (LLDB/GDB) and a Kotlin/Java IntelliJ client. Implement run/debug configs, enhance Rust expression evaluation, diagnose OS-specific C++ crashes, and design maintainable, well-tested debugger code while collaborating with QA and support.

Develop, optimize, and maintain scientific analysis tools for ground and flight test data; translate mathematical models into efficient software; drive migration to the TSASM time-series platform; provide technical support and act as liaison between Ground Station Team and Spanish Analysis Community; collaborate with specialist test analysis groups across avionics, performance, handling qualities, powerplant and more.

The Fullstack Software Engineer will design and build the core billing platform, handling payments and transactions while ensuring system scalability and reliability.

As a Fullstack Software Engineer, you will develop the core billing engine, ensuring accurate transaction processing, integrating with systems and platforms, and collaborating with teams to maintain a unified platform experience.

As a Fullstack Software Engineer, you'll engineer systems for payroll and benefits, automate workflows, and collaborate with HR teams to improve user experience. You will work with modern technologies to simplify complex business processes.

As a Senior Engineer, you'll develop scalable, event-driven backend architectures, design low-latency APIs, and contribute to product development across the stack while optimizing performance and collaborating on AI features.

Migrate Drupal 8 applications and custom modules to Drupal 9, refactor PHP code for maintainability, troubleshoot system issues, guide development teams on best practices, produce technical and user documentation, and review applications with recommendations.

Design, write, and test clean Java/Kotlin code using design patterns. Build resilient, secure, high-performance services handling millions of requests daily. Monitor, identify, and fix software defects. Work in Agile teams and use Spring Boot/Spring Cloud, Kafka, Docker, and Kubernetes.

Lead migration of Drupal 8 apps to Drupal 9, refactor PHP code for maintainability, guide teams on best practices, troubleshoot production issues, produce documentation, and review Research Drupal application with improvement recommendations.

The Senior AI & Computer Vision Software Engineer will work on innovative software solutions, bridge research and production, and mentor others while working in an Agile environment.