Empleos de backend full stack engineer en Madrid

Toggl is seeking a Senior Full Stack Engineer to join a Tribe responsible for Toggl 2.0, a unified planning, time tracking, and time intelligence product. You’ll own cross‑functional features from API to UI, working with React/TypeScript on the frontend and Golang on the backend, with PostgreSQL as the data layer.You’ll collaborate with product...

Combina desarrollo Full-Stack, ingeniería de datos e Inteligencia Artificial en proyectos tecnológicos de entorno empresarial.En GP DIGITAL buscamosData & AI / Full-Stack Software EngineerIBM ASPERAUn reto multidisciplinar en el que podrás trabajar con tecnologías como Python, Java, React, LLM y RAG, con la oportunidad de especializarte en IBM Aspera,...

AUBAY in Barcelona is seeking a Full-Stack Developer skilled in Java, Python, and Angular to join our multinational team on international projects. You will design and implement end-to-end features, build scalable REST APIs and cloud-based services on AWS, and collaborate with product, QA, and operations in an agile environment.The role emphasizes...

Max IT Consulting – Max Corporate Group is looking for a Senior AI-First Full-Stack Engineer 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 care organizations across several European countries, connecting...

Lexroom Srl is building Europe’s leading legal AI platform with a Barcelona focus. You will be a senior engineer in a small squad, owning the technical decisions and delivering production-grade features.You’ll work across the stack (Next.Js, TypeScript, Python, Django) and collaborate with product and design to ship high-impact capabilities. Fluency in...

Owen Thomas | B Corp™ is seeking a Senior Staff Full stack Engineer on a 12‑month contract. This fully remote EU‑based role centers on Rust and Java for backend, with React and Python as secondary stack. The contract is Outside IR35 and pays £500-600 per day. You will help shape backend services, contribute to architectural decisions, and collaborate...

Experis España busca un/a Desarrollador/a Senior Full Stack PHP para unirse a un equipo tecnológico centrado en soluciones de seguridad web y microservicios. Participarás en todo el ciclo de vida del desarrollo, desde análisis y diseño técnico hasta implementación y despliegue, colaborando estrechamente con Sistemas. Requisitos: >=3 años en...

Develops GUI/HMI components for simulation and virtualization products in an Agile environment. Derives requirements, designs architectures, and performs integration testing.

Luxoft in Spain is seeking an experienced Software Developer to modernize a mission-critical PMS used by investment professionals. The role involves transforming a mature WPF-based desktop platform into a scalable, API-enabled ecosystem across desktop, web, and data layers.You will upgrade. NET, WPF, and Dev Express apps, reduce technical debt, and optimize...

Senior Full-Stack Engineer to lead development of a cross-border payments platform, design features, and mentor junior engineers. Hybrid work model with competitive salary.

About Bark Bark is an online servicesmarketplaceconnecting customers with professionals across over 1,000 categories. Operating in nine countries including the UK, US, Australia, Canada, and New Zealand, we're transforming how people find trusted service providers for everything from home improvement to professional services. Our platform uses...

INFUSE is seeking a Full Stack Developer to drive end-to-end solution delivery within our PMO department, leading a cross-functional team to shape architecture and ensure high-quality releases. You will build frontend components, robust backend APIs, and scalable data pipelines in a fast-paced, data-driven environment.The role emphasizes collaboration,...

Job Description Are You Ready to Make It Happen at Mondelēz International? Join our Mission to Lead the Future of Snacking. Make It Uniquely Yours. You provide software and application knowledge to support implementation of the given solutions. How you will contribute You will ensure that delivered services are optimized to meet business demands and the...

German Sustainable Tech Unicorn in Madrid is seeking a Senior Full-Stack Engineer to own end-to-end development of ESG-focused products that help 2,000+ global companies comply with regulations. You will design scalable backend with Node.Js/Type Script and frontend with React.Js, lead technical choices in microservices, and collaborate in agile squads....

Treatwell is seeking a Senior Full Stack Engineer (React & Java) to join our Madrid-based team while operating in a fully remote capacity. You will own features end-to-end across frontend and backend, collaborating with designers, PMs, and fellow engineers to deliver incremental value in short cycles. You will work with a modern React/TypeScript frontend,...

A leading software company in Madrid is seeking a Senior/Lead AI Software Engineer to architect and scale AI-driven products. The ideal candidate will have over 5 years of full-stack development experience and 2+ years in AI/ML engineering, with expertise in Rust or Golang. Responsibilities include developing AI features, integrating LLMs into...

Actual Talent is the talent acquisition consultancy that offers Executive Search, RPO and Talent Solutions.About the client:A German Sustainable Tech Unicorn that is redefining how global corporations handle transparency. Backed by a €130M Series C investment, our client has built a proprietary, serverless cloud infrastructure to ensure human rights and...

OpenNebula Systems in Madrid-based HQ and fully remote, international team, is seeking a Senior Full-Stack Developer to advance the OpenNebula cloud management platform with a strong front-end focus while contributing to back-end when needed. You will own features end-to-end, work in Linux environments, collaborate across teams, and help evolve edge and...

Julius Baer in Madrid is seeking a skilled Java Backend Engineer to join our team. You will develop and maintain enterprise-grade backend apps using Java 21, Jakarta EE, and Oracle SQL, and design REST APIs for internal and external integrations. You will collaborate with product owners, analysts, and architects while contributing to testing, deployment, and...

AD4 Octógono busca un Desarrollador/a Fullstack Senior (MERN) para diseñar y construir soluciones web completas, robustas y escalables, tanto en frontend como en backend, con impacto directo en producto y negocio.Formará parte de un equipo técnico internacional, participando en diseño, desarrollo y evolución de aplicaciones modernas, con APIs REST,...