Senior Full-Stack Engineer

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 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.
Currently in a massive consolidation phase, their Madrid Hub is expanding from 20 to over 100 top-tier engineers in **.
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:
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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