Actual Talent is the talent acquisition consultancy
that offers Executive Search, RPO and Talent Solutions. About the
client: A German Sustainable Tech Unicorn that is redefining how
general 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. Currently in a massive consolidation
phase, their Madrid Hub is expanding from 20 to over 100 top-tier
engineers in 2026. This is your chance to join a high-growth
environment where engineering quality and product ownership are the
top priorities. The Mission: Impact at Scale 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 global
companies comply with critical ESG regulations (LkSG, CSDDD). Key
Responsibilities: System Architecture: 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). Technical Leadership: Influence the design of core libraries
and microservices architecture used worldwide. 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. Your Profile:e 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 . Architecture Mindset: Deep understanding of
microservices, end-to-end product ownership, and scalable design
patterns. Communication: 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. Good Salary Package
Hybrid Work: A balanced model of 3 days in the Madrid office / 2
days remote Premium Benefits: €80/month via Thanksben + up to
€200/month for transport and meals. High-Performance Culture: A
world-class engineering team where technical decisions are made by
developers, for developers.

📌 Senior Full-Stack Engineer (Node.js/React) – SustainableTech Unicorn (Madrid)
🏢 Actual Talent
📍 Madrid