George Lorentzos
Full-Stack & Mobile Developer
Summary
Developer with hands-on experience building production applications end to end — from mobile and web clients to backend services, servers, networking and security. Comfortable owning both the technical and the business side of a product.
Experience
Kamarrr Group
- Contributed to the development of the BRRRO app for Android and iOS.
- Designed and built BRRRO Mail from scratch.
- Hired at 18 after winning a company competition (€1,000 prize) by building a custom AI agent that set the top score in their game.
ItsOnlySkillz
- Built the website and web app for one of Greece's top 3 YouTube channels (850K+ subscribers).
GoFast
- Built a ride-hailing app from scratch with a different operating model from Uber and FreeNow.
- Handled the business side as well: company setup, trademark registration (OBI) and legal paperwork.
Projects
Atlacell
- Developed an AI system for cancer and tumor detection at age 18.
- Presented the product to St. Luke's Clinic (Thessaloniki); adoption was held back by the ~€3M cost of medical certification.
SkyEye
- Built a security layer that runs in front of all my servers and blocks malicious traffic before it reaches them.
Skills
- Languages
- Go, Python, TypeScript, JavaScript, Swift, Kotlin, HTML, CSS
- Frontend
- React, Vite
- Mobile
- React Native, native iOS & Android
- Databases
- Experienced with both SQL and NoSQL databases (PostgreSQL and others), able to work with any relational or NoSQL system
- Infrastructure
- AWS, Hetzner, Akamai, Docker, Kubernetes, Linux, networking, cybersecurity
- Soft skills
- Creativity, problem solving, critical thinking, persistence, attention to detail, strategic thinking, adaptability, decision making, self-directed learning, quality orientation, risk awareness