Empleos de contract full-stack engineer en Madrid

Taxfix, Madrid-based, is seeking a senior software engineer to build core features for our flagship product. You’ll own end‑to‑end delivery in a cross‑functional team, turning complex tax scenarios into reliable experiences with an AI‑first approach. You’ll contribute across frontend and backend with React and Node.js, collaborate with product,...

GMV in Tres Cantos, Madrid, Spain is seeking a software engineer to design, implement and maintain web-based solutions that support real-world business processes. You will build APIs, backend services and responsive frontend interfaces while integrating with external systems and guiding testing, deployment, and ongoing maintenance. As part of a...

Solera is seeking a Lead .NET Developer in Madrid with 10+ years of experience across .NET, Python, and React/Angular. You will lead full-stack development, architect scalable solutions, and drive DevOps practices to deliver high-quality software.The role requires collaboration with Product Management, Business Analysts, and cross-functional teams in an...

Avooq, an innovative AI startup, is seeking a talented Full-Stack AI Engineer to lead migration to scalable infrastructure and maintain a high-performance platform. You will work on React/Next.js and Node.js apps handling real traffic and shaping AI narrative technology.The role emphasizes deploying production-grade LLM integrations, cloud infrastructure...

Radisson Hotel Group is hiring a Full-Stack Developer & Data Engineer to support Pulse, our BI platform for hospitality. Hybrid role: web/desktop with Angular/TypeScript, React for mobile, and ETL pipelines powering analytics in ClickHouse Cloud.Responsibilities include building features, ETL design, data modeling, SQL optimization, and supporting users...

EPAM Systems in Madrid is seeking a Senior Full Stack Engineer for the private banking sector to accelerate your career in financial services technology.You will work in a cross-functional, DevOps-centred team using agile methodologies, delivering high-quality code in Java, React, and TypeScript while collaborating with stakeholders and architects to align...

Hiberus, una compañía tecnológica con sede en Madrid, busca un Senior FullStack Engineer con experiencia en Node.js y React para unirse a su equipo. Se valoran habilidades en microservicios, TypeScript y comunicación en inglés.Te unirás a un entorno colaborativo, con formación continua, horarios flexibles y un enfoque en innovación. Ofrecemos...

Frontiers Media SA is seeking a Senior Full-Stack Engineer with a strong backend lean to join the team powering the Research Topic Management (RTM) platform. You will own complex backend systems and full-stack features end-to-end on a distributed .NET/Vue stack, delivering robust, production-grade software for researchers worldwide. You will collaborate with...

Performanze, una solución digital para validar, escalar y optimizar negocios online, busca un Programador Full Stack para unirse al equipo en Madrid. Serás clave en el desarrollo y mantenimiento de soluciones web de alto rendimiento, trabajando en un entorno ágil y colaborativo con product, diseño y marketing. Se requiere 5–7 años de experiencia en...

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 and...

SIX Group Services Ltd. in Madrid is seeking a Senior Java Full Stack Engineer to join their agile team. The role involves developing new features for financial market projects and collaborating with various teams to ensure robust deliverables. The ideal candidate will have over 5 years of experience in Java technologies and modern web architectures, and...

Responsibilities * Lead the design, development and operation of new capabilities across our SaaS products. * Make architectural decisions that balance immediate business needs with long‑term scalability and maintainability. * Work closely with product, engineering and business leadership to shape product roadmaps and technical strategy. * Identify and...

Ingeteam, empresa líder especializada en ingeniería eléctrica y en el desarrollo de equipos eléctricos, motores, generadores y convertidores de frecuencia, busca incorporar un/aAI-Augmented Full Stack Developeren el área de Digitalización ubicada enZamudio. La persona seleccionada participará en eldesarrollo, evolución y modernización de...

Con el respaldo de GCO Ventures y Byld, estamos construyendoMaia Care : una nueva startup cuya misión es ayudar a las mujeres a gestionar los síntomas de la peri y menopausia de forma integral, a través de una plataforma digital personalizada y basada en evidencia.Buscamos una persona para unirse comoFull Stack Developer, para desarrollar y evolucionar el...

Full Stack Developer Java& APIReferencia: #72625Localización: EspañaBuscamos un Full Stack Developer & API , para incorporarse a un proyecto con foco en tecnologías Java, microservicios y gestión avanzada de APIs. Si eres una persona proactiva, con experiencia sólida en desarrollo backend y frontend, y conocimientos  en API , te queremos...

Spain | Remote | Senior Engineering OpportunityMaxIT Consulting – Max Corporate Groupis looking for aSenior Full-Stack Engineer, Consumer Fintechto join a fast-growing New York fintech company building banking and payment products for US prediction markets and regulated gaming.The company develops consumer-facing financial products covering account...

E‑Frontiers is seeking a Senior or Lead Full-Stack Developer to join an international project. The role is fully remote from Spain with occasional travel to Milan for 2-3 days every few months. Italian is mandatory for this position. 12‑month duration with potential extension. Holders of strong AWS, Terraform/CloudFormation, Docker, Node.js, React, Jest...

Mondelēz International seeks an AI Engineer / Full Stack Developer for AI Reporting & Insights, Barcelona or Warsaw based. You will design, build, and deploy data pipelines and AI models turning market data into decision-ready insights for stakeholders globally. You will collaborate with Product, Data Science, and Business teams, implement CI/CD, IaC with...

A leading recruitment agency is looking for a Senior Consultant specializing in AI, Semiconductor, and Embedded Systems in Madrid. The role involves taking ownership of AI solutions from concept to production, building intelligent systems, and collaborating across teams to deliver robust AI solutions. Ideal candidates should have strong Python skills,...

Full Stack (React+Node.js) Software Engineer for Satellite Control CentersAre you looking for an innovative and well-established place to develop your professional career? GMV is a technology group with extensive experience.We are expanding our teams in theSPACE sectorto take onprojectsrelated toSatellite Control Centers.We´ll get to the point; we'll tell...