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Marcin "HCK" Firmuga

22 - Poland 🇵🇱 - solo dev - founder of HCK_Labs - I ship real products in public.

Juminos from Stardew Valley

Get it from Microsoft committers.top badge Support PC Workman

A year ago I was scanning barcodes in a Netherlands warehouse. This week my app went live on the Microsoft Store.

Built solo, at night, on a 2014 laptop that hits 94°C. Four rebuilds. Still shipping.

readme-banner
🇵🇱 #65 in Top GitHub Committers in Poland.

Currently building

PC_Workman

A Windows system monitor that tells you why your PC is slow, not just that it is. Now on the Microsoft Store.
820+ commits · 87 stars · ~1,700 downloads.

quick intro

hck_GPT - a fully offline AI assistant. No internet, no API key, nothing leaves your machine. 90 intents through a 9-layer routing engine, judged against your PC's own learned baselines, so 82°C reads normal while gaming but critical at idle.

pro chat hckgpt

Local and offline - for your safety.

GuideAI

Turn 100-page PDF manuals into QR-code AI assistants. Because paper manuals suck. React and Supabase · Google OAuth · real device & QR persistence.

GuideAI landing GuideAI chatbot


My story

Nine months in a Netherlands warehouse. 15 km a day, scanning barcodes. Coding every night on a laptop hitting 94°C.

Lost the job on December 22nd, three days before Christmas. Started rebuild #4 that night. Shipped the first .exe three weeks later.

That's how PC Workman really started.

A year on: 12 dead projects behind it, a Google AI certification finished, and the last line of a roadmap I never believed I'd reach - live on the Microsoft Store.

Physical work by day. Code by night. The same rhythm that built every line of this.

image

Roadmap to the Microsoft Store - reached.next chapter loading.


Stack

PC Workman: Python | tkinter | WMI | SQLite | Sigstore | PyInstaller | MSIX

GuideAI: React | Supabase | Claude API | Vercel | Google OAuth


Find me


Weekly series - 3x/week, never missed

  • Monday Grind Blueprint - the plan for the week
  • Wednesday Code Autopsy - real code, explained
  • Friday Shipped & Scarred - what actually shipped vs what didn't

Best post: 57,000 views on LinkedIn.


Numbers

  • A year building PC Workman - now on the Microsoft Store
  • 820+ commits · 87 stars · ~1,700 downloads
  • 3,200 LinkedIn · 4,400 Dev.to · 470+ Medium · 200+ X
  • 28 articles across Medium, Dev.to & HackerNoon (featured 3× on HackerNoon)
  • Security: Sigstore-signed · VirusTotal 0/70 · CodeQL on every commit
  • 2 dogs - Kacia (11) & Lusia (2), best teammates for breaks 🐕

Warehouse to Microsoft Store | Building in public | HCK_Labs

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