Empleos de backend full stack engineer en Valencia

Affinist is a remote-first company hiring a Senior Full-Stack Software Engineer for the Repayments UX. The role is based in Spain and visa sponsorship is possible, with the team located across Europe in the same time zone.You will own quarterly goals, collaborate across product, design, and analytics, and help ensure reliability and growth at scale. Base pay...

W Hunt España busca un Senior Full-Stack Developer con fuerte foco en Backend (Java y Spring Boot) y experiencia en React.js para desarrollar soluciones end-to-end en entornos con arquitecturas basadas en eventos. La posición ofrece 100% remoto y opciones de flexibilidad, además de oportunidades de formación, certificaciones y clases de inglés....

UST España & Latam is seeking an experienced Developer Analyst - Full Stack Developer to join our team in Spain. The role requires 5+ years designing, developing, and maintaining scalable web applications with strong Angular, Node.js, Spring Boot, and OpenShift expertise. You will design, develop, and maintain full-stack solutions, work across frontend and...

Grupo Digital busca un ingeniero/a senior Full Stack con base sólida en Java/Spring Boot para desarrollar aplicaciones empresariales modernas y acelerar el SDLC con IA. Trabajarás con microservicios, REST APIs y pipelines CI/CD, integrando IA en generación de código, testing y documentación. Serás parte de un equipo que diseña, desarrolla y mantiene...

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 (F# / ASP.NET Core / ReactJS) based in Spain. Join a product-focused engineering team building modern SaaS solutions that simplify complex business and governance processes. As a Senior Full Stack...

Explore Group is seeking a Senior Full Stack Engineer for a fully remote six-month contract. You will work across the stack to deliver scalable e-commerce features, with a strong emphasis on AI-assisted development tooling. The role demands hands-on expertise in React and Node.js, with a track record of production-grade deployments and an autonomous working...

bunch is building the operating infrastructure for private markets. As a Full Stack Engineer with a frontend focus in our Platform team, you’ll shape frontend architecture, contribute to backend services, and help maintain our Design System. You will ship end-to-end features that empower thousands of users managing billions in assets. You’ll collaborate...

Concentrix Spain Business Process Outsourcing S.L.U. busca un Desarrollador Full Stack para unirse a un equipo totalmente remoto. El rol se centra en desarrollar aplicaciones web escalables, APIs REST y una arquitectura de microservicios, con experiencia en plataformas cloud como AWS, Azure o GCP.Se valorará experiencia en Docker/Kubernetes, DevOps y...

Electric Car Leasing Why we do it.We're looking for a Senior Fullstack Software Engineer (Python and React) to join our product and engineering team building the systems that power our ability to revolutionize the electric car leasing industry. Our tech stack is Python with GraphQL, React withNext.js, PostgreSQL and noSQL databases, running on AWS. ...

Electric Car Leasing Why we do it.We're looking for a Senior Fullstack Software Engineer (Python and React) to join our product and engineering team building the systems that power our ability to revolutionize the electric car leasing industry. Our tech stack is Python with GraphQL, React withNext.js, PostgreSQL and noSQL databases, running on AWS. ...

MindFriendPro is seeking a Senior Full-Stack Engineer to join our distributed team. You will build scalable, cloud-native applications and integrate AI-driven features into our core product. This is a 100% remote (asynchronous-first) position.You will design and deploy microservices with Node.Js and Python, develop frontend with React/Next.Js, and oversee AI...

AgileEngine, LLC. is seeking an experienced Sr. Full-Stack Software Engineer to support an AI training project. This fully remote contractor role focuses on developing and debugging front-end and back-end systems, building APIs, and evaluating AI-generated code for quality and security.You will work across languages and codebases, translating software builds...

Jobgether, based in Spain, is seeking a Senior+ Full-Stack Engineer to build a developer infrastructure platform enabling AI applications to connect with external APIs. You will own features from design to deployment across backend, APIs, runtime, and frontend, while collaborating with customers in a remote-first startup. Role emphasizes autonomy,...

Avenue Code in Spain is seeking senior professionals with a generalist profile, strong backend with Node.js, and solid React frontend experience to own product initiatives end-to-end. You will develop features independently, contribute to architecture, and collaborate in a small, autonomous squad within a SaaS context, balancing speed, quality and...

Kapa.ai is seeking a software engineer to work across the stack, helping answer thousands of developer questions daily. You will scale the RAG engine, build features in the analytics platform, and maintain client integrations using React and Python. The role requires a CS/ML background with 3+ years of experience in backend and frontend work, and an interest...

LanguageWire Ltd is launching a new team to modernize and expand a customer-facing tool. We’re looking for a Full Stack Engineer to join us in building it from the ground up. The current stack is Vue.js on the frontend and Python on the backend, with a planned migration to .NET in the near future. You’ll work across these technologies and contribute to...

NLab ThinkTank, a division of Navozyme, is seeking a skilled Full Stack Engineer to build scalable web apps using Symfony/Laravel, Node.js and React. Emphasis on TDD, with Inertia.js integration for seamless front-end workflows. Based in the European Union, the role offers opportunities for growth within the Superyacht Innovation landscape. Collaboration...

Albertine is seeking a seasoned full stack engineer to ship features across our TypeScript platform. You’ll shape API contracts, implement service and data work, and build the React UI members and agents actually use. Both halves must be solid in data choices and UX that feels finished. You’ll work across memberships, bookings, and billing with a focus...

A tech company in Spain is seeking a Senior/Lead AI Software Engineer to architect and scale AI-driven products. The role requires expertise in full-stack development, experience with Rust or Golang, and proficiency in AI/ML engineering. Candidates should be comfortable designing complex AI architectures and translating business requirements into actionable...

Staff Full stack Engineer (Contract) | Rust and Java (Primary) | React and Python (Secondary) | Fully Remote (EU-based) | £500-600/day | Outside IR35 | 12-month contract The Opportunity We’re supporting a fast-scaling, globally distributed tech business that is evolving its backend architecture and investing heavily in performance, scalability, and...