Senior Full-Stack Dev (React/Node) – AI/IoT, Hybrid Madrid

Joppy is hiring a Senior Full-Stack Developer to join our HUB platform and help shape the future of Business Partner Transparency for international clients. You will work in a hybrid Madrid setting, building serverless, scalable solutions with Node.js/TypeScript on the backend and React.js on the frontend.

You’ll collaborate in small agile squads, drive CI/CD practices, and mentor junior developers, while focusing on performance, security, and user experience in a global, sustainability-focused