Our Team
What We Do
We handle the entire software development lifecycle, from ideation and design to development, testing, deployment, and beyond. Our team specializes in:
- [1]Backend & frontend engineering
- [2]Manual & automation testing
- [3]DevOps
- [4]Business analysis
- [5]UI/UX design
- [6]AI engineering
Based in Greece, we’ve been helping companies around the world build software products and engineering teams since 2020. We’ve partnered with startups, Fortune 500s, and companies in between, across industries like fintech, banking, enterprise software, digital mapping, HR management, and robotics.
Who We Are
Rational Data was founded by developers who set out to create the kind of company they’d want to work for: results-driven, no-frills, and built around engineers who genuinely enjoy writing efficient, reliable code.
George Poulios
Polyglot full-stack engineer with a PhD in Mathematical Logic (yes, really). Deep into software architecture and algorithmic design. If something can be optimized, he’ll find a way.
Vasilis Stasinopoulos
Software architect who actually writes code, with years of experience in enterprise software and engineering leadership. Enjoys solving tough problems and building scalable, reliable systems.
Paschalis Tsopanoglou
Technical background, business mindset, and years of experience building teams and keeping operations on track. Also the one who makes sure we don’t forget to send out invoices.