Empleos de backend full stack engineer en Madrid

Bark is an online services marketplace connecting customers with professionals across 1,000+ categories. We are expanding in Europe and migrating to a full marketplace with subscription pricing, backed by EMK Capital. We are seeking a Senior Full Stack Engineer based in Spain to join a small, agile squad owning the Acquisition domain and marketing tech with...

Bark is seeking a Senior Full Stack Engineer based in Spain to join the interactions squad. You'll own frontend and backend work for the buyer journey, including AI-powered features, messaging, and notifications. You'll collaborate with product, design, data and mobile engineers to ship high-impact features and improve buyer conversion and satisfaction. The...

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,...

About Bark Bark is an online servicesmarketplaceconnecting customers with professionals across over 1,000 categories. Operating in nine countries including the UK, US, Australia, Canada, and New Zealand, we're transforming how people find trusted service providers for everything from home improvement to professional services. Our platform uses cutting-edge...

Treatwell is seeking a Senior Full Stack Engineer (React & Java) to join our Madrid-based team while operating in a fully remote capacity. You will own features end-to-end across frontend and backend, collaborating with designers, PMs, and fellow engineers to deliver incremental value in short cycles. You will work with a modern React/TypeScript frontend,...

About Bark Bark is an online servicesmarketplaceconnecting customers with professionals across over 1,000 categories. Operating in nine countries including the UK, US, Australia, Canada, and New Zealand, we're transforming how people find trusted service providers for everything from home improvement to professional services. Our platform uses cutting-edge...

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...

Actual Talent is the talent acquisition consultancy that offers Executive Search, RPO and Talent Solutions. 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...

En Mensoft Consultores buscamos un/a Senior Full Stack Developer Java + Angular con experiencia real end-to-end, capaz de trabajar tanto en desarrollo como en despliegues y entornos de producción. Se requieren al menos 4 años de experiencia, dominio de Java + Spring Boot, Angular, APIs REST, GitLab CI/CD y PostgreSQL. Se valorará experiencia con Docker...

Mondelēz International is seeking an AI Engineer / Full Stack Developer to join the AI Reporting & Insights team, working across Barcelona and Warsaw to design, build, and operate data pipelines and AI workflows.You'll collaborate with Product, Data Science, and IT to translate requirements into robust software, applying Python, React/Next.Js, AWS, and...

Make your mark for patients 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...

Jobgether is seeking a Senior Full Stack Engineer in Spain to join a remote-first, product-focused team building Saa S for governance and business processes. You will develop features with F#, ASP. NET Core, React.Js, and Type Script, shaping architecture and product direction. You will own features end-to-end, collaborate across product and engineering, and...

Apiux Tecnología busca un Desarrollador/a Full Stack Senior para unirse a un proyecto propio, con criterio técnico y impacto real en el producto. Ubicación: España; incorporación lo antes posible. El equipo es senior en Frontend, Backend y QA, trabajando 100% en inglés bajo Scrum.Se valora experiencia de 5+ años en desarrollo web, Node.Js para...

Lexroom is seeking a senior software engineer to join a small, autonomous squad of four to five. You’ll own technical decisions for what the squad ships, and take production ownership while helping teammates grow.Work across the stack with Next.Js, TypeScript, Python, Django, and AI tooling. We hire for judgment and curiosity, tailoring interviews to...

5 Blue Software is seeking a Senior Full-Stack Developer to join an international team building an AI-powered B2 B platform. You will own features end-to-end, from design to production, across frontend and backend, while applying an AI-first approach.You’ll collaborate with engineering and product teams across time zones, use Claude Code or similar tools,...

Mondel?z International cerca ingegneri Full Stack AI per unirsi a un team in crescita dedicato a una nuova piattaforma di insight basata su AI.Lavorerai su pipeline dati, modelli AI/ML e applicazioni full stack che trasformano dati di mercato in raccomandazioni operative.Il ruolo richiede solide competenze in Python, cloud AWS, Databricks e frameworks...

Lexroom Srl is seeking a Sr.Full-Stack Software Engineer to support an AI training project focused on software development, debugging, code evaluation, and cross-language translation.This is a remote contractor position with ~15 hours per week.You will contribute to both front-end and back-end systems, review AI-generated code for quality and security, and...

N-iX busca un/a Senior .NET FullStack Engineer para unirse al equipo de Desarrollo de Software e integrarse en una célula Scrum.El candidato debe dominar C# y Angular, y demostrar trayectoria en construir aplicaciones de alto rendimiento.El perfil ideal cuenta con Azure, .NET Core, SQL Server y experiencia en pruebas unitarias, diseño SOLID y Jira.Se...

Ayer Max IT Consulting – Max Corporate Group is looking for a Senior AI-First Full-Stack Engineer to join a fast-growing European technology company building an AI-powered workforce platform for the healthcare sector.The company operates a multi-sided marketplace used by hundreds of hospitals and care organizations across several European countries,...

Thought Bot in Seville, Spain, is hiring a Full-Stack Software Engineer to contribute to a European Commission project supporting ECAT at the Joint Research Centre (JRC).The successful candidate will help design, develop, and maintain scalable tools for social media data collection, annotation, and analysis.The role involves developing user-friendly...