Empleos de backend full stack engineer en Valencia

We are looking for a Senior Full-stack Engineer to develop and maintain enterprise applications, modernise legacy systems, and integrate AI tools into everyday development workflows. Key Responsibilities * Design, develop, and maintain front-end and back-end applications, APIs, and databases. * Use AI coding assistants for development, debugging,...

Lexroom.ai is hiring a Senior Full Stack Engineer to join a four-to-five person squad. You will own technical decisions, ship features end-to-end, and collaborate with a product manager and designer. The stack spans Next.js/TypeScript on the frontend and Python with Django on the backend, with Postgres and vector stores. You will work across the stack,...

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 areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. WHY JOIN US If you’re looking for a place to grow, make an...

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 areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. WHY JOIN US If you're looking for a place to grow, make an...

Beigar busca un/a Desarrollador/a Full Stack Senior para un proyecto propio, con al menos 5 años de experiencia en desarrollo de aplicaciones web y dominio de JavaScript Vanilla y Node.Js. La posición es 100% remota y se desarrolla en equipo internacional que opera en inglés bajo metodología Scrum.Si te motiva trabajar en un entorno técnico con...

Affirm, Inc. is hiring a Software Engineer II, Fullstack (Repayment UX) to join our remote-first team based in Spain. You will help design and ship backend systems and web apps using React or Vue, with optional React Native experience.The role supports a European-wide time zone and requires on-call rotation. The Repayment UX team works across product, design...

Exoticca international is seeking a FullStack Engineer to design and build scalable services using Next.js, Node.js, TypeScript, and MongoDB. You will help shape an event-driven architecture and ensure reliable, maintainable systems powering our ecommerce platform. You will collaborate with cross-functional teams to translate business needs into robust...

Mondelēz International is seeking a Full Stack Data Platform Engineer to drive data pipelines and analytics for media data. You will design and implement scalable data solutions, partner with vendors, and deliver actionable insights through internal dashboards and AI-driven tools. The role emphasizes collaboration with cross-functional teams, cloud-based...

Jobgether is seeking a Senior Software Engineer (Laravel | Next.Js | PostgreSQL) based in Spain to join an established engineering team. You will work across the full stack, contributing to migrations, API integrations, and performance optimization for a large-scale web application.You will mentor peers, influence architecture, and collaborate with DevOps to...

Mitek is hiring a software engineer in Spain to work on the Trust Platform and other identity solutions. You will contribute to front-end and back-end development, leveraging React, Go, and cloud services to deliver secure, scalable digital identity features.The role emphasizes data-driven, innovative problem solving, collaboration in a virtual-first...

JobServe Ltd is looking for an experienced Full Stack Engineer for a 12-month remote contract across Europe. You will design, develop and optimise scalable web applications, working across Front End and Back End technologies. You will own product features, collaborate with technical teams, and ensure secure, reliable solutions aligned with business needs....

Analytics Engineer II, Full Stack (Revenue Analytics) Remote Spain At affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. We’re looking for a curious, driven professional to join our Revenue Analytics team. This builds and owns the...

A fast-scaling AI startup is seeking a Fullstack Engineer to build their generative AI applications. In this remote role, you will design, build, and deploy production-ready features, work with modern frameworks like Ruby on Rails and React, and collaborate directly with a high-impact team. Ideal candidates have solid experience in full-stack development and...

Treatwell is seeking a Senior Full Stack Engineer (React & Java) to build and operate Connect, a SaaS platform for beauty and wellness across Europe. You will own features from database to UI, pair with cross-functional teams, and focus on testing, observability, and scalable architectures. The role emphasizes a DevOps mindset, data-driven decisions, and...

Alpaca is hiring Senior Full-stack Engineers to design, build, and operate scalable distributed systems powering global investing. You’ll own projects end-to-end—from concept and coding to production deployment and maintenance—in a fast-moving, highly autonomous environment. Join teams like Trading Platform, Internal Tools, and Operations Automations;...

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...

Mitek is a global leader in digital and biometric identity authentication. This remote-first position involves developing and enhancing software across our identity and mobile deposit solutions, with an emphasis on scalable Go back-end services and React front-ends.The role supports a flexible, virtual-first culture with opportunities for collaboration...

Lexroom.Ai is hiring a Senior Full Stack Engineer to join a four-to-five person squad. You will own technical decisions, ship features end-to-end, and collaborate with a product manager and designer.The stack spans Next.Js/TypeScript on the frontend and Python with Django on the backend, with Postgres and vector stores. You will work across the stack,...

Grupo Digital busca incorporar un Data & AI / Full-Stack Software Engineer para desarrollar e integrar aplicaciones empresariales. Se trabajará en pipelines de datos, integraciones entre plataformas y soluciones de transferencia de datos con IBM Aspera, aportando experiencia en IA generativa, NLP, LLM y RAG.Se valorará experiencia con Docker/OpenShift,...

YO AI Labs is seeking a seasoned Full-Stack Software Engineer to support an AI training project. This contractor role offers approximately 15 hours per week with flexible scheduling and fully remote work.You will develop across front-end and back-end, integrate APIs, review AI-generated code for quality, security, and performance, and adapt builds between...