Empleos de full stack software engineer java en Barcelona

Ersilia, based in Barcelona, is seeking a Senior Full Stack Engineer to design, develop and own features across the product with a strong focus on delivery and collaboration. The role involves frontend work with React and backend work with Node.Js/Type Script, leveraging Postgre SQL and AWS. You will partner with Product and Design to translate requirements...

Can you imagine building AI-powered products that transform how business teams generate strategic insights? Join our expert team to work on a Pharmaceutical sector product, contributing to the development of an AI platform that transforms enterprise knowledge into intelligent decision support. You will apply your knowledge of LLMs , RAG , knowledge graphs...

Seeking a backend-leaning Senior Full Stack Engineer for a B2B SaaS startup. Must be product-minded, comfortable with full-stack development and infrastructure management, and experienced with modern AI development tools. Role is remote with hybrid requirements in Barcelona.

Preply is seeking a Senior Full Stack Engineer for the CRM team. You will own backend services in Python/Django and frontend work in React/Typescript, enabling automated, AI‑assisted communications across millions of learners and tutors. You’ll lead cross‑functional initiatives, ship features quickly, and mentor others while focusing on scalable,...

ISOLUTIONS in Barcelona is seeking a Senior Full Stack Developer to join an international team. You’ll work with C#,. NET, React and Type Script in a hybrid setup from Barcelona, collaborating with teams in Switzerland to deliver high-value software. The role emphasizes design decisions, architectural discussions, and a strong focus on delivering business...

Ai Hiring Startup in Barcelona is seeking a motivated Full-Stack Engineer to join as the first hire and help shape a new AI-native platform. You will own features from first commit to production, spanning Next.js frontend, FastAPI backend, and Supabase as needed.You will work in a hybrid setup with three in-office days in Barcelona, collaborating closely...

Preply is looking for a Senior Full Stack Engineer in Barcelona to help shape the future of our learning platform. You will balance backend focus (Python/Django) with frontend work (React/Typescript), driving data-informed product decisions and scalable architecture.You’ll mentor peers, raise engineering standards, and partner with product, data, and UX...

Barcelona, Spain | Senior Engineering Opportunity MaxIT Consulting - Max Corporate Group is looking for a Senior Full-Stack Engineer - AI-Native Applications 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...

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...

We Are Wizeline, a global AI-native technology solutions provider, develops cutting-edge,impact.Are you a fit? Sounds awesome, right? Now, let’s make sure you’re a good fit for the role:We Are Wizeline, a global AI-native technology solutions provider, develops cutting-edge,AI-powereddigital products and platforms. We partner with clients to leverage...

We're looking for aFull Stack Engineerfor one of our clients who enjoys building new products from the ground up and is eager to help shape AI tooling for the mobility industry.Work across the full stack to solve complex problems using incomplete and messy dataDesign and evolve canonical data modelsBuild pipelines to handle real-world data inputsDefine and...

Capitole Consulting busca un Senior Full Stack Developer para unirse a un equipo multidisciplinar. Desarrollarás aplicaciones web modernas y de alto rendimiento con React/Next.Js y trabajarás estrechamente con diseño y producto en un entorno Agile.Se valoran 4–5 años de experiencia, habilidades en Tailwind CSS y pruebas automatizadas. Modalidad...

Allianz Technology is seeking an AI Full Stack Developer to design and deliver AI-powered applications within the BMP. You will work across frontend, backend, and data layers in a collaborative, international team environment, driving scalable, secure solutions for Allianz entities worldwide.Expect exposure to AI/ML, APIs, microservices, and cloud...

Max IT Consulting – Max Corporate Group is seeking a Senior AI-First Full-Stack Engineer to own outcomes across the full product stack in a fast-growing European tech company focused on an AI-powered healthcare workforce platform. You will work in a small, founder-led environment with significant ownership over product and engineering decisions, using...

A pioneering healthcare technology company based in Barcelona is seeking a Senior Full Stack ML Engineer to lead the development of innovative machine learning models targeted at solving complex healthcare challenges. The role demands strong Python skills, experience in data science, and the ability to mentor colleagues. As part of a collaborative team, you...

Full Stack Engineer role focused on building agentic AI products end-to-end, from architecture design to infra, within a fast-paced, remote EU-based company.

Selecto is seeking a Senior FullStack Developer to join an AI-powered platform handling users, roles, and permissions with KYC/KYB and rewards systems. You will work remotely with a Europe-wide team on a 6–12+ month project and gradually assume a Team Lead role as you extend a complex schema-driven backend. The stack includes Next.Js 15, TypeScript, tRPC,...

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...

Sateliot, based in Barcelona, is seeking a Senior Full Stack Engineer to own features from design to production across Laravel (PHP) and Python codebases. You will surface data for dashboards and tools while collaborating with 4G/5G Core Network and IT Platform. Expect autonomy, high-trust collaboration, and shipping production systems. The role involves...

Kenos Technology busca un Desarrollador Full-Stack Senior para participar en la construcción de una nueva aplicación web corporativa que sustituirá el CRM actual e integrará servicios y activos corporativos.Se valorará experiencia demostrable en Angular, Spring Boot y/o Node.js, PostgreSQL y AWS, capacidad de trabajar de forma autónoma en entornos...