Empleos de full stack engineer annotator en Madrid

UST is a multinational technology company seeking a Senior Full Stack Developer with deep expertise in .NET, React, Azure Cloud, and AI to join our remote Spain team. You will design, develop, and deliver cloud-native applications and collaborate with data scientists to drive AI-powered solutions across the lifecycle.The role is 100% remote (Spain) with...

Frontiers is seeking a Senior Full-Stack Engineer with a strong backend lean to join the team building the Research Topic Management (RTM) platform. You will work on a distributed .NET system with Vue/Nuxt frontends, SQL Server data operations, and AI-enabled design tooling. You will own complex backend systems and full-stack features end-to-end—from...

Toggl is seeking a Senior Full Stack Engineer to join a Tribe responsible for Toggl 2.0, a unified planning, time tracking, and time intelligence product. You’ll own cross‑functional features from API to UI, working with React/TypeScript on the frontend and Golang on the backend, with PostgreSQL as the data layer. You’ll collaborate with product...

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....

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...

UST, a multinational digital technology leader, seeks a Senior Full Stack Developer (.NET & Angular) to join an international project in Madrid. You will design, develop, and maintain scalable applications while collaborating with cross-functional teams in an Agile environment. Required: 5+ years in software development, strong .NET/C#, Angular, SQL, REST,...

BESTSECRET in Málaga is expanding its tech hub and hiring a Full Stack Software Engineer to build a Kubernetes-based supply platform. You will develop backend services in Java/Spring Boot, collaborate with product, design, and BI teams, and help automate end-to-end purchasing and onboarding workflows. The role emphasizes data-driven decision-making,...

knowmad mood busca un Ingeniero/a Full Stack para desarrollar soluciones de software con foco en Java y Angular, con nivel de inglés y modalidad híbrida en Madrid Centro. Se valorará experiencia en microservicios y gestión de dependencias con Maven, así como trabajo con bases de datos relacionales como Oracle. La empresa ofrece desarrollo profesional,...

Hiberus, una compañía tecnológica con sede en Madrid, busca un Senior FullStack Engineer con experiencia en Node.js y React para unirse a su equipo. Se valoran habilidades en microservicios, TypeScript y comunicación en inglés. Te unirás a un entorno colaborativo, con formación continua, horarios flexibles y un enfoque en innovación. Ofrecemos...

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...

A leading software development company in Spain is seeking a Full Stack Senior/Lead Engineer to join their agile team. You will build features and enhance user experiences across web and mobile platforms, leveraging your expertise in ReactJS, NodeJS, and React Native. Ideal candidates should have over 5 years of experience in building scalable systems and...

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...

Avance Consulting is seeking a Full Stack Engineer who loves Go on the backend and React on the frontend to join our team in Castilla-La Mancha, Spain. You will build and deliver high-quality features, design scalable services, and collaborate with Product Managers and Designers to turn ideas into working solutions. A Bachelor's degree in Computer Science is...

Longtail Technologies, Inc. is seeking a seasoned backend/full-stack engineer to help evolve Sightline, our conversational analytics and intelligent alerting product. You will own features end to end, from understanding customer problems to deployment and production support. You will design backend services and APIs, ensure robust, observable systems, and...

Buscamos Product Engineer (AI & Full Stack) en PROXUSEn PROXUS estamos ampliando el equipo de producto y desarrollo.PROXUS es un proyecto que empezamos hace 2 años cuatro compañeros de la universidad y que hoy ya utilizan más de ******* estudiantes en toda España.Estamos construyendo la plataforma con la que nos habría gustado estudiar: una herramienta...

Job DescriptionAre You Ready to Make It Happen at Mondel?z International?Join our Mission to Lead the Future of Snacking.Make It Uniquely Yours.You provide software and application knowledge to support implementation of the given solutions.How you will contributeYou will ensure that delivered services are optimized to meet business demands and the service...

UST is a multinational company based in North America, certified as a Top Employer and Great Place to Work with over 35,000 employees and a presence in more than 35 countries. We are leaders in digital technology services, delivering large-scale technological solutions to major clients. We are looking for a Full Stack Software Engineer with a stronger focus...

Solera is seeking a Lead .NET Developer in Madrid with 10+ years of experience across .NET, Python, and React/Angular. You will lead full-stack development, architect scalable solutions, and drive DevOps practices to deliver high-quality software. The role requires collaboration with Product Management, Business Analysts, and cross-functional teams in an...

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...

Senior II Full-Stack Engineer (back-end heavy) Location:BarcelonaEmployment Type:Full timeLocation Type:HybridDepartment:EngineeringMeet the team! Our team builds scalable, resilient products using Python/Django on the backend and React on the frontend, all with one goal in mind: creating a smooth, meaningful experience for our learners and tutors.We’re...