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From: Poland

Location: Grudziądz, PL

On Useme since 16 January 2026

About me

Hi! I build complex web applications and backend systems:

🔧 Technologies: • Languages: Java, JS/TS, Kotlin, PHP, Python, C# • Backend: Spring Boot, Node/Express, Prisma, Supabase • Frontend: React/Next.js, Tailwind CSS • Databases: PostgreSQL, MySQL, MongoDB • Tools: Socket.io, Docker, Vercel, REST/GraphQL

🚀 Portfolio: • ZeroTrace – P2P secure chat (TS + E2E) • Cortex AI – Minecraft AI (Gemini API + Open AI + structures) • OryxisLabs – AI-Powered Code Generator • Enterprise Auth Platform (PHP + MySQL) • Real-time WebSocket + Admin CMS

💼 Services: ✅ MVP in 2-4 weeks ✅ Backend APIs/Microservices ✅ Integrations (Social/AI/Payments) ✅ Responsive web apps ✅ Documentation + deployment

📍 Grudziądz | Remote PL 💰 Contract work | Milestones | NDA OK

> Self-taught dev ready for commercial projects!

GitHub: github.com/Kielczi Discord: kielczi_

Categories

Web development > Website development
Coding and IT > Software
Coding and IT > Mobile apps
Coding and IT > IT projects
Coding and IT > Server administration

Skills

API Docker Java Javascript Mysql .NET Next.js NodeJS PHP Postgresql Python React REST Web api Web development

Portfolio

Oryxis Labs

Platforma AI do automatycznego generowania kodu! Twórz projekty w kilka sekund — bez kodowania. Napisz opis, wybierz AI i gotowe!

Cortex

Minecraft AI (Gemini API + Open AI + structures)

ZeroTrace

P2P secure chat (TS + E2E)