DanielPosypanko
Full-Stack Developer & Tech Lead
I build production web apps, operational platforms and connected systems, from architecture to deployment.
About
I'm a full-stack developer and tech lead based in Nysa, Poland. I take ownership from architecture and implementation through deployment and day-to-day production.
Most of my work sits in operational products: internal tools, integrations, mobile, and systems that have to stay reliable once they leave the laptop.
Product engineering
Web and mobile apps with clear UX, solid data models, and features that ship to real users.
Platforms & integrations
APIs, backends, databases, and device/IoT connections that keep operations moving.
Delivery ownership
Architecture, code quality, deployments, and mentoring, not just tickets.
Stack
Frontend
- TypeScript
- React
- Next.js
- Vue
- Flutter
Backend
- .NET
- NestJS
- Symfony
- PostgreSQL
- Redis
Infrastructure
- Docker
- CI/CD
- Linux
- IoT / RVM integrations
Work
01Recyclo
Software and infrastructure for a deposit-return network
02Filozofia Piękna
Commercial website for a local beauty studio
03EpicEye
Anti-cheat platform for FiveM servers
04Waves RolePlay
In-game UI for a FiveM roleplay server
05EpicAnalysis
Personal reverse engineering and software analysis research