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 integral 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.

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📌 Senior Full-Stack Engineer (Node.js/React) - Hybrid, ESG Impact (Madrid)
🏢 Actual Talent
📍 Madrid