Empleos de senior full-stack engineer api en Madrid

Inglés fluido.We are knowmad mood!Somos una compañía líder en transformación digital, en constante evolución y a la vanguardia de la tecnología.Nacimos para provocar un cambio real a través de la innovación y el desarrollo sostenible, con la misión de aportar valor a los clientes e impulsar nuestro talento.Formado por más de 3.000 personas...

Explore Group is seeking a Full Stack Product Engineer to ideate, architect, and scale our enterprise AI platform for technical commercial teams in manufacturing. You will own both frontend and backend work, shaping product strategy, backend architecture, cloud infrastructure, and UI design to deliver customer value.We value practical builders with startup...

Jobtailor in Madrid seeks a French-speaking Full‑stack AI Engineer to collaborate with customers from onboarding to deployment. You will build features using React, TypeScript, Node.Js, and Python, and design AI/ML solutions including LLM prompting and tuning to support valued customer outcomes.You will manage APIs and third‑party integrations while...

Grupo TECDATA Engineering busca un/a Desarrollador/a Java Full-Stack para un proyecto de analítica de redes en telecomunicaciones, trabajando con Java 17+, Spring Boot y React/TypeScript. Trabajarás en APIs REST, microservicios, Kafka y entornos cloud-native, con despliegues en Docker y Kubernetes.Modalidad híbrida en Málaga y colaboración con un equipo...

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....

Capitole, una multinacional del sector HR/Payroll con sede en Barcelona centro, busca un Software Engineer Full-Stack para impulsar iniciativas técnicas de IA moderna, agentes autónomos y MCP. Desarrollarás servicios end-to-end con Node.Js + TypeScript y React, diseñando APIs REST y colaborando con equipos internacionales en un entorno en inglés.El...

We're looking for aFull Stack Engineerfor one of our clients who enjoys building new products from the ground up and is eager to help shape AI tooling for the mobility industry.Work across the full stack to solve complex problems using incomplete and messy dataDesign and evolve canonical data modelsBuild pipelines to handle real-world data inputsDefine and...

MediaRadar is seeking a Software Engineer I to join our Madrid-based team, building features across our modern cloud platform with guidance from senior engineers. You'll contribute end-to-end across UI, backend, and data interfaces, gaining exposure to adtech, data intelligence, and advertising insights in a fast-growing, globally expanding company.Ideal...

Bullhorn Consultants Pvt. Ltd. is looking for a Full Stack Java Developer to join their team in Madrid, Spain. The role involves working closely with business DevOps teams and contributing to the Agile SDLC using modern technologies such as Java 8, Spring API, Docker, and Kubernetes.Ideal candidates will promote collaboration in challenging circumstances and...

Tecdata Engineering busca un/a Java Full-Stack Developer para un proyecto de analítica de redes para operadores de telecomunicaciones, trabajando con Java 17+ y Spring Boot, y con front-end en React y TypeScript.Se trabajará en una plataforma cloud-native en un equipo híbrido. Se requieren 3-7 años de experiencia, MongoDB, Docker y Kubernetes, además de...

AXER Credit, a stealth fintech, seeks a strong full-stack engineer to own and ship features in a fast-paced early stage setting. You will collaborate with founders, product and design to deliver scalable web applications from concept to production.The role requires hybrid work with at least three days in the Málaga office, and offers competitive...

GMV in Tres Cantos, Spain, is looking for a talented individual to join their team focused on developing web applications for the space sector. The role involves designing, implementing, and maintaining solutions supporting satellite control systems in a collaborative and agile environment.Successful candidates will have strong experience in JavaScript,...

Neev is seeking a Fluent English-speaking Full Stack developer to work remotely within the EU. You will join the Development team and collaborate with a major client’s IT team on varied tooling and data workflows.You will design social data tools, build frontend interfaces, create robust back-end APIs, and automate tasks with Bash and Python. Strong Linux,...

Journi is seeking a Full Stack Engineer with expertise in .NET and Vue to build web applications end‑to‑end. You will work on frontend and backend tasks, using .NET 6+ and VueJS to deliver user‑friendly interfaces.Collaborate closely with client teams to meet requirements and deliver scalable solutions. Responsibilities include designing, developing,...

MVST is looking for a Full Stack Developer to join their team in Barcelona. You will develop and maintain web and mobile applications while collaborating with cross-functional teams. The ideal candidate has 2-4 years of experience in full-stack development with proficiency in JavaScript frameworks, Node.Js, and database technologies.The company offers a...

As a founding member of our new Barcelona R&D Hub, you will help build the AI-powered precision medicine platform that transforms clinical and molecular patient data into insights that accelerate drug discovery and improve patient outcomes.To help drive this vision, we are looking for a curious, collaborative and solutions-focused Lead Full-Stack AI Product...

Indra Group busca un/a Ingeniero/a de Software FullStack para participar en el diseño y desarrollo de software para sistemas críticos distribuidos en un entorno internacional.Se requieren más de 2 años de experiencia en desarrollo software de sistemas críticos, conocimientos de C++ y ADA, Linux, Git, Jira y DOORS, y nivel medio de inglés; el puesto...

Full Stack Engineer (Agentic AI)Salary: up to €80,000 depending on experienceLocation: Remote (Spain)Level: Mid/SeniorOur client is building something new in the UK: a VC-backed, AI-enabled roll-up of a large, fragmented services sector. They buy excellent owner-operated businesses and turn them into a modern technology-led group. Two things make it work:...

OpenNebula Systems is hiring a Senior Full-Stack Developer to work on the OpenNebula web interface and its edge computing initiative. You will lead frontend development with opportunities to contribute to backend components, thrive in an autonomous, cross-functional team, and impact a widely used open-source cloud platform. The ideal candidate has strong...

Lever, Inc. is partnered with a company seeking a Senior Full Stack Engineer based in Spain. You will build scalable applications using .NET/C#, React/Redux, and SQL databases, with GCP and CI/CD practices. The role blends hands-on coding with architectural input and mentoring, in a remote-first environment. You will collaborate with product and design teams...