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 general 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/Lead Full Stack Engineer (Node.js / React.js) (Madrid)
🏢 Actual Talent Spain
📍 Madrid