Empleos de backend full stack engineer en Barcelona

InnoIT Consulting in Barcelona/Madrid is seeking a Senior Full-Stack / GenAI Engineer to join an international AI products team, working on a secure, enterprise-grade GPT platform. You will primarily build back-end services using Node.Js/TypeScript, with additional front-end contributions in Next.Js and React, and design APIs for scalable, compliant...

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...

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...

Agap2 España busca un/a Senior Full Stack Software Engineer para liderar proyectos de desarrollo y modernización sobre plataforma Microsoft y entornos Cloud. La posición requiere experiencia técnica, capacidad analítica y foco en buenas prácticas de arquitectura, desarrollo seguro y DevOps, con especialidad en APIs REST, Angular y pipelines CI/CD en...

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting‑edge solutions empower businesses—from exchanges and wallets to

About The JobAre you a passionate Java Developer looking for an exciting opportunity to work with cutting‑edge technologies and make a real impact? Join our team and be part of a dynamic environment where you'll work with Java, Spring Boot, and Agile methodologies to drive innovative solutions. With the chance to continuously learn and grow, this role...

We are looking for a Senior Full-Stack / GenAI Engineer to join an international AI Products team working on the evolution of a secure, enterprise-grade GPT platform. You will contribute mainly to back-end development (around 90%), with occasional front-end contributions, building secure and scalable features for document understanding, translation, APIs,...

We power people's progress.At Preply, we're all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it's creating real impact.We've just reached unicorn status with a $150M Series D,...

About The JobAre you a passionate Java Developer looking for an exciting opportunity to work with cutting‑edge technologies and make a real impact? Join our team and be part of a dynamic environment where you'll work with Java, Spring Boot, and Agile methodologies to drive innovative solutions. With the chance to continuously learn and grow, this role...

Shakers is seeking a Freelance Senior Full-Stack AI Engineer to turn generative models into trusted production systems. Work 100% remotely for a 6-month engagement, collaborating on Vercel v0 Platform API-based harnesses and LLM workflows. You will build with ReactJS, TypeScript, Next.js, Node.js, REST/GraphQL, and PostgreSQL, and automate GitHub and...

Builds and operates digital surfaces for customers and internal teams, including front-end React applications, service layers, and system integrations. Focuses on end-to-end feature delivery, testing, and production ownership.

Kodify is hiring a remote Full-Stack Developer to join a high-traffic platform serving millions of users. The role emphasizes React, Next.js, Node.js and GraphQL with a NoSQL stack, and requires collaboration with product owners, designers and domain experts to ship scalable features.You'll own features from design through deployment, advocate clean code...

YO AI Labs is seeking experienced Full-Stack Software Engineers to support an AI training project focused on software development, debugging, code evaluation, and technical problem-solving. This is a contractor role offering about 15 hours per week and fully remote work globally. Responsibilities include building and debugging frontend and backend systems,...

Plexus Tech busca perfiles con al menos 4 años de experiencia desarrollando con Java y Angular para proyectos innovadores en el ámbito IT. El proceso incluye pruebas técnicas en Java y Angular, seguido de una videollamada. Se ofrece contratación indefinida, jornada intensiva en verano y flexibilidad horaria, además de acceso al Club Benefits con...

Jobtailor is seeking a driven full-stack engineer to work closely with customers from onboarding through ongoing usage, helping them integrate and optimize our AI solutions. You will build new features and scalable tools using React, TypeScript, Node.js, and Python, while designing AI/ML applications and refining LLM prompts to improve outcomes....

Overview Are you passionate about helping customers realize the full value of Microsoft AI, Security, Endpoint, and Productivity investments? Do you thrive in fast-changing environments, enjoy learning new technologies, and excel at connecting business outcomes to technical solutions? The Global Consumption & Delivery Acceleration team is looking for a...

Jobtailor en Barcelona busca un desarrollador full stack para evolucionar y mantener una solución core de soporte a ventas, con un énfasis en frontend y backend.El equipo de producto ágil diseña e implementa funcionalidades escalables y de alta calidad. Se valora experiencia en Angular, Java/Spring Boot, MongoDB y procesamiento de flujos, además de...

NOUS RECRUTONS ! 📣 Tu souhaites rejoindre une entreprise qui valorise la culture humaine, l’innovation et le bien-être au travail ? Chez Extia, notre devise est « First who, then what » : d’abord la personne, ensuite le projet. Nous privilégions l’humain et le travail d’équipe pour proposer des solutions à fort impact. 🚀 Chez #Extia, nous...

SUSE is seeking a highly versatile Full Stack Software Engineer to join the Global Sovereign Solutions team. You will turn sovereign themes into deliverable software, collaborating with product managers and engineers across the company. With 5–6 years in fast‑paced technical environments, you will work with Go, JavaScript, Python, Vue.js, Kubernetes,...

NOUS RECRUTONS ! 📣 Tu souhaites rejoindre une entreprise qui valorise la culture humaine, l’innovation et le bien-être au travail ? Chez Extia, notre devise est **« First who, then what »** : d’abord la personne, ensuite le projet. Nous privilégions l’humain et le travail d’équipe pour proposer des solutions à fort impact. 🚀 Chez...