Empleos de web3 fullstack engineer en Madrid

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...

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...

Capitole is hiring a Fullstack Engineer (Frontend-Oriented) with 4+ years of experience to drive frontend components and Backstage integrations within the joint team. You will contribute to the portal's technical advancement and collaborate across ARTs and organizational units. The role emphasizes React development, REST APIs, and enterprise IT experience,...

Capitole is seeking 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, focusing on modern frontend experiences, Backstage integrations, and cloud-native solutions. You will develop React-based UI components, build...

Alpaca is seeking a seasoned Fullstack Engineer to join the Platform Authentication team and help build secure access to Alpaca’s products and APIs. You will contribute to authentication, authorization and identity-provider infrastructure while modernizing the platform. You’ll work on multi-region services, frontend and backend features, and developer...

Building an internal AI-native platform and designing agents for automation, knowledge retrieval, and performance alignment using LLMs.

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...

BNP Paribas Personal Finance Group in Madrid seeks a Java Fullstack Developer to design and develop applications for the Personal Finance SET ADM team, using Spring and Angular within an agile framework. You will implement new functionalities, resolve defects, perform technical analyses, and ensure quality through testing and CI/CD practices, collaborating...

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...

Talan Spain is seeking a Fullstack Developer for a 4-month contract to deliver a React-based mobile project with a strong focus on performance, offline capability, and efficient data synchronization. You will design, implement, and deploy a mobile-first PWA using React and TypeScript, build APIs with Python/FastAPI or Node.js, and work with PostgreSQL while...

Alan is building the AI-native company with a global reach. As a Software Engineer on this team, you will craft the internal platform used daily to navigate the organization, and design agents that automate onboarding, knowledge retrieval, and performance alignment. You will push LLMs into production and define abstractions that scale across all Alan...

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...

Health can't wait Not for symptoms to get worse. Not for a six-month appointment. Not for a system to catch up. But that's exactly how healthcare works today. You wait, until you can't. Alan exists to end the wait. Health is a universal right, and we believe this right can only become real when it's coupled with prevention. We need to stop treating health as...

Alan is hiring across Europe, including Spain, for a full-time engineering role. The team builds infrastructure, interfaces, and applications to deliver high-quality service to members and health professionals. The role emphasizes ownership, fast delivery, and privacy-by-design. We value developers who focus on experience, collaboration, and AI-augmented...

Software Engineer II, Fullstack (Repayment UX) Remote Spain The Repayment UX Engineering team is growing, and we're looking for a Full-Stack Software Engineer. We're a full-stack team located entirely in Europe within the same time zone, but culturally rooted in Silicon Valley. Our team exists to make these moments the most reliable and transparent in...

Super is a global technology group powering entertainment and fan-centered experiences. We seek a Senior Full Stack Engineer to shape systems across multiple engineering domains and drive critical functionality for millions of users worldwide. You will work with TypeScript, React, Node.js, and modern tooling to deliver scalable features, mentor teammates,...

We are seeking a highly skilled and motivated Full Stack Laravel/Symfony/Node.js/React Developer to join our team. The ideal candidate will have a strong background in building scalable web applications using Symfony/Laravel, Node.js & React, with a deep understanding of Test-Driven Development (TDD) practices. Experience with Inertia.js is a significant...

Capitole is growing fast and seeking a Software Engineer in Barcelona to join a multidisciplinary team building Drives Configuration and Programming software for a global leader in industrial automation. You will own features end-to-end, design solutions, review code, and collaborate with teams across Japan, the US and the Netherlands to deliver high-quality...

Aircall is a unicorn AI-powered communications platform transforming how teams win with customers.For over a decade, we’ve believed voice builds the strongest business relationships. We bring voice, SMS, WhatsApp, and 250+ integrations together on one seamless workspace—so every customer conversation drives revenue, resolves issues faster, and builds...

At Julius Baer, we celebrate and value the individual qualities you bring, enabling you to be impactful, to be entrepreneurial, to be empowered, and to create value beyond wealth. Let's shape the future of wealth management together. YOUR CHALLENGE Responsible for designing, developing and testing software modules, ensuring optimal functionality and...