Empleos de senior full-stack engineer api en Madrid

A leading software company in Madrid is seeking a Senior/Lead AI Software Engineer to architect and scale AI-driven products. The ideal candidate will have over 5 years of full-stack development experience and 2+ years in AI/ML engineering, with expertise in Rust or Golang. Responsibilities include developing AI features, integrating LLMs into...

Frontiers Media SA is seeking a Senior Full-Stack Engineer with a backend lean to join the RTM team. You will own complex backend systems, lead end-to-end features, and drive production reliability for a distributed .NET/Vue/Nuxt platform.You will mentor peers, shape architecture, and ensure scalable, high-performance experiences for researchers worldwide....

La empresa se llama PayMark Fast, y es una start-up tecnológica que usa el Big Data y el IoT para agilizar la experiencia en tiendas y almacenes, así como mejorar la trazabilidad de productos en estos lugares.Estamos situados en Wayra, un hub de innovación abierta localizado en el edificio de Telefónica de la gran vía.Descripción del empleoCambiar la...

About the client: A German Sustainable Tech Unicorn that is redefining how global corporations handle transparency. Backed by a €130M Series C investment, our client has built a proprietary, serverless cloud infrastructure to ensure human rights and ecological responsibility across global supply chains. Currently in a massive consolidation phase, their...

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Full Stack Engineer (.NET/React) based in Spain. As a Senior Full Stack Engineer, you will build and evolve scalable, secure, and high-performing applications across both backend and frontend layers. You will work...

Company Description Radisson Hotel Group is one of the world's largest hotel groups with ten distinctive hotel brands, and more than 1,500 hotels in operation and under development in 95+ countries. The Group’s overarching brand promise is Every Moment Matters with a signature Yes I Can! service ethos. People are at the core of our business success and...

Grupo Crit busca un/a Senior Full Stack Developer para unirse a su equipo en Lleida. Serás clave en la creación y mantenimiento de proyectos digitales, trabajando con equipos multidisciplinares y gestionando soluciones innovadoras en un entorno tecnológico en evolución. Se valorará experiencia en desarrollo full stack, conocimiento de tecnología...

IFS is seeking a Senior Full Stack Engineer to join its Industrial Sustainability Reporting Platform. The role focuses on building scalable, AI-native features across frontend and backend, with strong emphasis on modular, API-first design and cloud-native deployment.Hybrid work options are available within a globally distributed team. The candidate will own...

Avooq is seeking a talented Full-Stack AI Engineer to migrate to scalable infrastructure and maintain a high-performance platform. You will lead the migration to custom cloud infrastructure, build scalable React/Next.js and Node.js systems, and deploy production-grade AI/LLM integrations with high concurrency. Ideal candidates have 5+ years of full-stack...

Parser Limited is seeking a Senior Full Stack Engineer to drive development across the JVM backend (Java/Kotlin) and modern frontend (JavaScript/TypeScript) in a hybrid Madrid setting. You will own features from API design to UI implementation, collaborating with product and design teams to deliver scalable, user-centric travel ecosystem solutions. The role...

Techmunity is hiring Senior Full Stack Engineers to build AI-powered agents that can resolve customer service problems by interacting with brand data. You will design and implement backend and frontend systems, connect data sources, and scale infrastructure to support real conversations. You will work on cross-functional features across LLM/agent systems,...

Capitole keeps growing, and we want you to grow with us! We are seeking a Senior Full-Stack Developer (M/F) to join an international project. You will design, develop and maintain scalable full-stack applications using Java, Spring Boot, and Angular, contributing to architecture and DevOps practices. The role requires 3+ years of experience, strong...

Full Stack Engineer (Senior/Lead) ID41561 ($2,500 signing bonus) AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in application development and AI/ML, and our people‑first culture has earned us multiple Best Place to Work awards.Why...

Altia is seeking a Senior Full-stack Software Engineer to join our team on an international project focused on the development and maintenance of financial applications for a major European organization. You will contribute to secure, reliable, and high-quality enterprise software solutions while collaborating with a multicultural team in Madrid. You'll work...

Frontiers Media SA is seeking a Senior Full-Stack Engineer with a strong backend lean to join the team powering the Research Topic Management (RTM) platform. You will own complex backend systems and full-stack features end-to-end on a distributed .NET/Vue stack, delivering robust, production-grade software for researchers worldwide. You will collaborate with...

Bark is seeking a Senior Full Stack Engineer to join our Acquisition squad. You’ll work on Python backend and React/TypeScript frontend, shaping marketing tech that drives customer growth in a fully remote role based in Spain. You’ll collaborate with marketing, product and design, build AI-powered tooling, implement guardrails for live AI outputs, and...

Mondelez International Inc. busca un Desarrollador Full-Stack Senior para unirse a su equipo. El puesto, que se realiza de forma remota desde Madrid, implica diseñar, desarrollar y desplegar aplicaciones web modernas. Colaborarás con UX/UI designers, PMs y otros ingenieros para entregar nuevas funcionalidades. Se espera código limpio, pruebas unitarias y...

Impala Search Ltd is transforming mobility with a data-driven platform that powers a growing international mobility ecosystem. We seek a Senior Full-Stack Engineer with a backend focus to build Python services and APIs while contributing to React and TypeScript across features that support an international mobility platform. You will own backend services,...

Who we areVOIS (Vodafone Intelligent Solutions) is a strategic arm of Vodafone Group Plc, creating value for customers by delivering intelligent solutions through Talent, Technology & Transformation. As the largest shared services organisation in the global telco industry with 30,000 FTE, our portfolio of next-generation solutions and services are designed...

Sopra Steria España busca un/a profesional para unirse a un proyecto estable en una de las principales entidades financieras internacionales, realizando nuevos desarrollos. Se requieren al menos 5 años de experiencia en desarrollo Full Stack, con Java y microservicios en backend y Angular o React en frontend.Contrato indefinido a jornada completa, 23 días...