Empleos de remote senior fullstack engineer en Madrid

Equitable Earth is seeking a Senior Fullstack Engineer to build and evolve web and mobile apps, collaborating with the Tech Lead and Product team. You will own features end-to-end, mentor peers, and push for high engineering quality, including AI-driven workflows.The role is fully remote with significant overlap with French business hours, offering a...

Appfire is seeking a skilled Senior JS/TS engineer to join the Astroneers team, working on JMWE/JMCF products and related features. You will contribute across ideation, design, development, release, and maintenance in a transparent, supportive environment. You will design scalable applications using Effect-TS and Node.js, applying best practices, and...

Profile busca un/a desarrollador/a Fullstack de nivel medio–alto para un proyecto 100% remoto. Se trabajará con TypeScript, Node.js y un framework basado en Vue, creando APIs, servicios y interfaces que conecten negocio y datos en una arquitectura BFF. El candidato ideal tiene experiencia en PostgreSQL, pruebas con Jest y diseño de componentes...

We are bsport. The place to be!bsport is an all-in-one platform combining boutique fitness and advanced technology. Our platform helps our partners manage their bookings, payroll, marketing and more, to streamline operations and boost their commercial success.Since we launched in 2019, we have already achieved the following:We’ve built a community of over...

Equitable Earth is seeking a Senior Fullstack Engineer to build and evolve web and mobile apps, collaborating with the Tech Lead and Product team. You will own features end-to-end, mentor peers, and push for high engineering quality, including AI-driven workflows. The role is fully remote with significant overlap with French business hours, offering a...

We are on a mission to pioneer the world’s next era of play. As we grow across Europe and Latin America, we’re building The Playstack - the technology powering the next generation of sports, gaming, and fan experiences. Join us, and help make it the most widely used platform in the world! From operations, to marketing, to product, we are looking for...

At Equitable Earth, we're on a mission to help protect and restore 1% of the natural world by 2030. We’ve built a rigorous, technology-enabled standard to certify conservation and restoration projects, ensuring they deliver lasting impact: strengthening livelihoods, safeguarding biodiversity, and supporting a stable climate. We're a diverse, mission-driven...

At Capitole, we keep growing and we want to do it with you!We are looking for a Senior Fullstack Engineer with a strong frontend mindset to join an international project.You will contribute to the evolution of the central platform used by developers across the organization, working on modern frontend experiences, Backstage integrations, and cloud-native...

Our client is transforming the car rental industry through anasset-light, data-driven platformthat helps local businesses turn vehicles into new revenue streams. With200,000+ customers, 5,000+ vehicles, 500+ rental locations and 1,500+ partnersacross6 countries, they're scaling the technology behind a growing international mobility platform.Role...

Build the Infrastructure Powering Global InvestingCan you design, build, and operate scalable distributed systems whilst still shipping customer-facing products?Have you built software that serves millions of users, processes large volumes of data, or supports mission-critical business operations?Do you enjoy solving complex engineering challenges across...

Join one of Southern Europe's fastest-growing startupsEnginy is a Barcelona-based startup and one of Southern Europe's fastest-growing companies ranked #3 in the Sifted 100: Southern Europe 2026, and we're just getting started.We're building the AI-native GTM platform for modern B2B teams, combining prospecting, enrichment, intent signals, AI research and...

We are on a mission to pioneer the world’s next era of play. As we grow across Europe and Latin America, we’re building The Playstack - the technology powering the next generation of sports, gaming, and fan experiences. Join us, and help make it the most widely used platform in the world! From operations, to marketing, to product, we are looking for...

Appfire is hiring a software engineer to build and improve Jira-related products with a focus on JMWE/JMCF, collaborating across a cross-functional team. You’ll influence product direction, design scalable cloud apps, and mentor teammates in a transparent environment.The role emphasizes performance, UX improvements, and exploring AI capabilities, with a...

Exoticca Travel UK Limited in Barcelona is seeking a Senior Back-end Software Engineer. This position involves building systems for travel product configuration and ensuring operational excellence.The ideal candidate has strong problem-solving skills, experience with AI tools, and a deep understanding of RESTful APIs. The role offers a competitive salary,...

Blue Code Alicante is hiring aSenior FullStack Integration Engineerto join one of our clients, an international SaaS company building product configuration and personalization technology for e-commerce and enterprise customers. You will take ownership of customer integrations from development through delivery. The role is explicitly expected to own...

About our clientOur client builds a leading digital identity and fraud prevention platform used by banks, fintech companies, online marketplaces, and other regulated businesses worldwide. Their products combine biometric identity verification, document and image processing, and advanced fraud detection to help customers balance frictionless digital...

Parser is seeking a Senior Fullstack Engineer in Spain with flexible remote work and occasional travel to the UK office. You will design, develop, and maintain scalable backend services and rich frontend interfaces, collaborating with product managers and frontend engineers to deliver robust, high‑performing applications. You will work with microservices,...

En WayOps buscamos un perfil Senior Fullstack AI Engineer para uno de nuestros clientes, para participar en el diseño, desarrollo y evolución de aplicaciones corporativas dentro de un ecosistema digital complejo, con foco en arquitectura, integración de sistemas, desarrollo end-to-end y automatización inteligente mediante Inteligencia...

M Métrica Consulting, una consultora de negocio e integración de sistemas, busca un Desarrollador Fullstack Senior con más de 4 años de experiencia en backend con Java/Spring y frontend en React. Diseñará y mantendrá servicios, desarrollará funcionalidades end-to-end y trabajará con Kafka, analizando código heredado y asegurando despliegues...

Alan, the health prevention platform, is hiring in Spain. You would join the Engineering team building AI agents that answer 1M+ members’ questions about reimbursements, coverage and claims — instantly and without a human.We move fast with ownership, ship production AI, and use a stack of React, Python/Flask, PostgreSQL. Remote-friendly, in-person...