Senior Software Developer — Silesia, PL
I'm Daniel Kasprzyk. 5+ years shipping software, 3 years deep in Generative AI — building commercial multi-agent systems by day, my own products by night.
AI-powered CV platform. Upload a job offer → AI tailors your CV, generates a cover letter and scores the match. Multi-agent pipeline, built to actually ship.
Free public app for browsing AI & LLM news. Scrapes sources, filters the signal, publishes daily and weekly digests.
Global dictation app for Windows. Press a hotkey → speak → text lands in any application. Pay-per-use, no subscription.
Offline-first fitness tracker for iOS and Apple Watch, backed by a modular .NET API. Workout logging, AI coaching, progress analytics.
My personal Jarvis. Desktop voice assistant with multi-agent architecture, STT/TTS, RAG, Spotify integration. Built on a custom agent framework developed from scratch.
Native vertical video editor for Apple devices with on-device AI. Built for 9:16 workflows and fast, clean Apple-first editing.
Multi-surface finance product: Fastify backend, React web app, Expo mobile client. Document workflows and background jobs.
React/TypeScript web product built as a separate surface in the portfolio. Still private, but part of the stack.
Senior Software Developer from Silesia, Poland. 5+ years in the industry, 3 years exploring Generative AI, last year building commercial GenAI solutions.
Day job: enterprise multi-agent AI on Microsoft Agentic Framework. After hours: Rezme, a personal voice assistant, and open-source tools that solve real problems.
Looking for people building AI projects, collaborators, and good networking in the space.
Systems that scale without turning into ceremony. Clear boundaries, clean flows, fewer surprises.
Agentic UX, retrieval, orchestration and evaluation only when it actually improves the product.
Micro-interactions, motion and layout hierarchy that make the product feel finished, not assembled.
Get in touch
Open to interesting projects, collaborations, and B2B opportunities.