At T4G Lab, we are more than just a tech consultancy. 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 general team. 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. 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.

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.
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 communication skills in English. As a global consultancy, clear communication with international partners is essential.
Tech Versatile & Secure: You go beyond just writing features.
Strong Backend & Frontend skills (Python/Django and React preferred, but we value solid engineering fundamentals).
Infrastructure Mastery: You have strong knowledge of cloud infrastructure (AWS), DevOps, and deployment pipelines.
Security First: You understand OWASP top 10, data encryption, and secure authentication practices. You build systems that protect user data.
Experience with AI coding tools and techni

📌 Full Stack Engineer/Agile Engineer (España)
🏢 T4G Lab
📍 España