Yan Prysowecki
Munich, Germany
Yan Prysowecki
Full‑stack Web Developer,AI Integration,FinTech
Category : Web development
Full‑Stack Developer | Web3 & AI Specialist | FinTech Expert
I build high‑performance digital products from scratch — from MVP to production. With 5+ years of hands‑on experience in React, Node.js, Rust (Solana), and AI integration (LLMs, RAG, CrewAI agents), I deliver clean, scalable, and secure solutions.
What I offer:
Web3 & Blockchain – Smart contracts (Solana/Rust/Anchor), dApps, SPL tokens, NFT marketplaces, DeFi protocols.
AI & Automation – Custom AI agents, LLM fine‑tuning, RAG pipelines, business process automation (n8n, Zapier, custom code).
Full‑Stack Development – React, Next.js, TypeScript, Node.js, PostgreSQL, Tailwind CSS, real‑time WebSocket systems.
FinTech & Trading Platforms – Matching engines, order books, payment integrations (Apple Pay, Stripe), risk management tools.
Technical Consulting – Architecture reviews, team mentoring, PoC development, CTO‑level advisory.
I build high‑performance digital products from scratch — from MVP to production. With 5+ years of hands‑on experience in React, Node.js, Rust (Solana), and AI integration (LLMs, RAG, CrewAI agents), I deliver clean, scalable, and secure solutions.
What I offer:
Web3 & Blockchain – Smart contracts (Solana/Rust/Anchor), dApps, SPL tokens, NFT marketplaces, DeFi protocols.
AI & Automation – Custom AI agents, LLM fine‑tuning, RAG pipelines, business process automation (n8n, Zapier, custom code).
Full‑Stack Development – React, Next.js, TypeScript, Node.js, PostgreSQL, Tailwind CSS, real‑time WebSocket systems.
FinTech & Trading Platforms – Matching engines, order books, payment integrations (Apple Pay, Stripe), risk management tools.
Technical Consulting – Architecture reviews, team mentoring, PoC development, CTO‑level advisory.
Working hours
- Monday:08h00 To 18h00
- Tuesday:08h00 To 18h00
- Wednesday:08h00 To 18h00
- Thursday:08h00 To 18h00
- Friday:08h00 To 18h00
- Saturday:Not available
- Sunday:Not available
- 🇩🇪 Deutsch
- 🇬🇧 English
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