Software Engineer · Portfolio

Kacper Serewiś

pronounced/ˈkat͡s.pɛr/

Software Developer @ Stofloos, based in Eindhoven, The Netherlands.

I build apps and tools, tinker with hardware, and occasionally write about the rabbit holes I fall into.

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Kacper
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Latest on GitHubkacper-serewis/mcp-picnic · 4 recent
Coded this week13 hrs 51 minsTypescript 26%TSX 17%Python 16%
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2025
Stofloos

Full-time developer at Stofloos building AI, DevOps, backend and React Native solutions.

TypeScriptPython
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2025
Reverse engineering of the Splinter Cell Blacklist protocol

Reverse engineering Splinter Cell: Blacklist's multiplayer protocol to bring online play back after Ubisoft's server shutdown.

TypeScript
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2024
watch-n-fit

A smartwatch app that shows your Basic-Fit gym QR code on your wrist — no phone needed.

SwiftTypeScript
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Latest post
Downgrade MacOS without second mac (M1)

Learn how to successfully downgrade from MacOS 12 to Big Sur when your Mac softbricks, with a step-by-step tutorial provided. Discover how to overcome the limitations of the restore mode and reinstall the desired MacOS version, thanks to helpful resources and guidance. This post is a lifesaver for those facing similar challenges and needing to quickly switch back to an earlier MacOS version.

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