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Marcin "HCK" Firmuga

22 · Radom, Poland 🇵🇱 · solo dev · founder of HCK_Labs · I ship real products in public, at night, after taxi shifts.

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Juminos from Stardew Valley

Play Scaling Laws free pcworkman.dev Steam supporter pack

A year and a half ago I was scanning barcodes in a warehouse in the Netherlands. Since then: an app on the Microsoft Store, and a game built in 48 days of nights after taxi shifts.

Everything I have built has earned 70 zł. I keep building anyway, in public, where you can check every line.

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🇵🇱 #47 in Top GitHub Committers in Poland.

Currently building

1. PC Workman

PC_Workman

A Windows system monitor that tells you why your PC is slow, not just that it is. On the Microsoft Store since July 2026. 1,290+ commits · 70+ stars · Sigstore-signed · VirusTotal 0/70 · CodeQL on every commit.

quick intro

hck_GPT, a fully offline AI assistant. No internet, no API key, nothing leaves your machine. It judges your readings 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. · Website · Download · Source · Roadmap · Windows guides

2. Scaling Laws, an AI company tycoon (coming to Steam)

Scaling Laws: a model ships, the corner reports users and earnings, the founder at home

January 2022. Twelve million dollars. No product. Train models on the real Chinchilla scaling law, rent or buy compute that ages twice, fund research, and outlast fourteen rival labs seeded from the real 2022 to 2026 release timeline. You are not buying upgrades, you are timing them.

First commit on 2 August 2026. Forty-eight days later: 5 public versions · 474 commits · 1,418 + 65 tests. A city, rented offices with your name on the door and a server room with a climate are next. Steam: October to November 2026.

Play free on itch.io · Game page · How it works · The first 48 days · IndieDB · Game Jolt · Source

Help put it on Steam. The Steam Direct fee is $100. For $10 you get a Steam key on launch day and your name in the credits; for $25, your name also becomes a candidate you can hire in the game. Supporter pack on buycoffee.to · GitHub Sponsors


My story

Nine months in a warehouse in the Netherlands. 15 km a day, scanning barcodes. Coding every night on a laptop that hits 94°C, because I was afraid of disappearing.

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

A year on: twelve dead projects behind it, Google's AI programme finished, and the last line of a roadmap I never believed I would reach: live on the Microsoft Store.

Now I drive a taxi ten to twelve hours a day and build at night. In August that turned into a game.

image

The long versions, with dates and numbers: Fourteen months, month by month · From a warehouse floor to the Microsoft Store · Forty-eight days, a taxi, and a game

Open to my first job in software: Python, IT support, junior developer. Everything about me.


Writing: three series a week since March 2026

Best post: 57,000 views on LinkedIn. Featured three times on HackerNoon.


Stack

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

Scaling Laws: Unity 6 · C# · UI Toolkit · a simulation layer with no engine dependency, tested in 1,400+ tests

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


Find me


Numbers

  • PC Workman: on the Microsoft Store · 1,290+ commits · 70+ stars
  • Scaling Laws: 48 days old · 5 versions · 474 commits · 1,418 + 65 tests · Steam this autumn
  • 3,200 LinkedIn · 4,400 Dev.to · 470+ Medium · 200+ X
  • 28 articles across Medium, Dev.to and HackerNoon (featured 3× on HackerNoon)
  • 2 dogs: Kacia (11) and Lusia (2), best teammates for breaks 🐕

Earlier project: GuideAI GuideAI

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

GuideAI landing GuideAI chatbot


Warehouse → Microsoft Store → a game on Steam | Building in public | HCK_Labs

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