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 ecological responsibility across global supply chains. This is your chance to join a high-growth environment where engineering quality and product ownership are the top priorities. As a Senior Full-Stack Engineer you will be an architect of transparency. You will own the end-to-end development of products that help over 2,000 integral companies comply with critical ESG regulations (LkSG, CSDDD). Design and optimize scalable full-stack features, focusing on robust backend systems and high-performance frontend interfaces. Infrastructure Innovation: Work directly on a custom-built, serverless cloud ecosystem (the Hub). Collaborative Strategy: Work in high-density agile squads (4-6 people)



alongside tech leads to define the product roadmap. Quality Advocacy: Drive technical excellence through rigorous code reviews, automated testing, and CI/CD best practices.

Experience:
6+ years of professional experience in Full-Stack development, specifically within product-based companies (no agencies or consultancies). Backend Mastery: Expert-level command of Node.js and TypeScript . Frontend Proficiency: Strong experience with React.js . Fluent English (C1). Spanish is a plus but not mandatory for technical collaboration. What's in it for you? Unlimited Growth: Join a unicorn at the peak of its global expansion with a direct line to leadership. Hybrid Work: A balanced model of 3 days in the Madrid office / 2 days remote High-Performance Culture:

📌 Senior Fullstack Engineer (Madrid)
🏢 Actual Talent Spain
📍 Madrid