Empleos de contract full-stack engineer en Madrid

Frontiers Media SA is seeking a Senior Full-Stack Engineer with a backend lean to join the RTM team. You will own complex backend systems, lead end-to-end features, and drive production reliability for a distributed. NET/Vue/Nuxt platform. You will mentor peers, shape architecture, and ensure scalable, high-performance experiences for researchers worldwide....

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,...

TalentLyft is seeking a Senior FullStack Developer ready to step into a Team Lead role for a complex AI‑powered platform handling users, roles, and permissions. You will work remotely across Europe on a 6–12+ month engagement, collaborating with a PM, designer, and engineers to build a compliant, security‑driven system. You will design scalable...

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...

Senior Full Stack Engineer (Remote in Spain Possible)Apply for theSenior Full Stack Engineerrole atLanguageWire, a global leader in language and content services dedicated to helping brands reach their full global potential.About the RoleYou will help modernize our core application and develop valuable features for our translators, customers and internal...

ERNI - Swiss Software Engineering is seeking a backend/full-stack engineer to help build enterprise content management platforms using PHP, Python and modern API-driven architectures. You will contribute to design, development and maintenance across teams in a collaborative environment.You'll work with Laravel, REST APIs, MySQL and PostgreSQL, and you will...

Cakewalk is seeking a Senior Full-Stack Engineer to build and improve customer-facing features across the frontend and backend. You will own features from early discussions through implementation, testing, release, and ongoing maintenance.You will collaborate with Product and Customer Success to translate customer needs into reliable, maintainable solutions,...

ISOLUTIONS in Barcelona is seeking a Senior Full Stack Developer to join an international team. You’ll work with C#, .NET, React and TypeScript 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...

Julius Baer in Madrid seeks an experienced Java/Full-Stack engineer to design, develop and test software within complex banking systems, owning the full delivery lifecycle and collaborating with cross-functional teams.The role requires strong Java, Spring Boot, React/Angular, SQL, and CI/CD, plus a pragmatic, entrepreneurial mindset and excellent...

A leading software company in Ribarroja del Turia is seeking a Full Stack Engineer to build and evolve a secure, cloud-based SaaS platform. The ideal candidate will have over 4 years of experience in SaaS, high proficiency in Java, React, and SQL, along with a DevOps mindset. This position emphasizes collaboration with product and design teams and offers a...

Lever, Inc. is seeking a Staff Full Stack Engineer - Sell Side Engine based in Spain. The role focuses on hands-on engineering to rebuild systems supporting origination, contracting, onboarding, and growth in a rapidly scaling energy technology environment.You will own architecture decisions, work across pricing, data, billing, and risk platforms, and...

Lead backend systems development for a .NET/Vue/Nuxt platform, focusing on reliability, scalability, and feature ownership. Mentorship and architecture shaping are key.

Hopper is seeking a senior full stack engineer to anchor HTS Assist, Hopper's agentic AI assistant for travel. You will own the realtime and voice layer end to end, building across React/TypeScript front ends, Scala and Python services, and cloud infrastructure.The role covers telephony integrations, streaming speech-to-text and text-to-speech pipelines, 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...

Ubicación:PUESTO HÍBRIDO EN BARCELONA (cerca Metro Bogatell) (3 días en remoto, 2 días presenciales a la semana )Desarrollo y mantenimiento de aplicaciones web utilizandoAngularJS (o Angular 17+) y Node.J s.Diseño e implementación de soluciones serverless conAWS Lambda.Gestión y optimización de bases de datos enAWS (RDS y DynamoDB) .Integración y...

REWE digital Spain seeks a seasoned Full Stack Developer to design, implement, and enhance a loyalty program, focusing on personalized incentives and campaign planning interfaces. You will collaborate with product teams and participate in the full product lifecycle within an international, cross-functional environment.As part of our Incentive Assessment...

Jobgether SRL is seeking a Software Engineer (Frontend and Backend) based in Spain to contribute across frontend and backend development for reliable, scalable cloud applications. You will work with Java, JavaScript, Python, and modern web frameworks, with containerization and cloud deployment in AWS/Azure/OpenStack/OpenShift environments.You will develop...

Pillar is seeking a Full Stack Engineer to join their ambitious team in Barcelona. This role involves building the foundations of the startup, which has rapidly grown with significant investments.The ideal candidate will have proven experience in early-stage startups and mastery of technologies such as React and TypeScript. A strong ownership culture...

UST España & Latam is seeking a Senior Full Stack Developer (AI-Native) to join an innovative technology team. You will design, develop, and maintain scalable enterprise applications for a leading international banking environment, leveraging Java, Spring Boot, Hibernate, and Angular within a 100% remote setup in Spain.You will work with modern...

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,...