Change the World, Bit by Byte
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At T4G Lab, we are more than just a tech consultancy. We are partners in impact. We build technology that matters. We work with startups, non-profits, universities and United Nations to solve real-world problems in Health, Climate Change, Education, Research or Financial Access. We are looking for a seasoned Full Stack Engineer with deep experience to join our integral team. You will build scalable, high-impact solutions that empower organisations to move faster and do more good.
The Role
As a Senior Member of our engineering team, you will be hands-on in designing, building, and deploying robust applications. You won't just be writing code. You will be crafting solutions for complex challenges, ensuring our partners get world-class, secure, and sustainable products. This is a pure Full Stack role where you will own features from the database to the UI, but with a heavy emphasis on architectural soundness and infrastructure security.




What You’ll Do
Build & Scale:
Develop high-quality, maintainable software across the full stack (Frontend + Backend).
Secure Infrastructure:
Take ownership of cloud architecture. You will ensure our systems are not just functional but are secure by design and optimised for performance.
Impactful Work:
Work on diverse projects ranging from AI integration to lean product adjustments for startups and non-profits.
Mentor & Lead:
Use your experience to set coding standards and mentor other developers in the team.
Collaborate:
Work directly with founders, product managers, and non-technical stakeholders to translate "vision" into "shipped code."
Who You Are
Experienced:
You have 8+ years of professional experience in software engineering. You have seen it all, including legacy code, greenfield projects, and complex migrations.
Fluent in English:
You have excellent written and verbal co

📌 Senior Full Stack Engineer (España)
🏢 T4G Lab
📍 España