Marcin Kurczewski

Greater Poland Voivodeship

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Summary

🤩

Rockstar

🎓

Top School

Marcin Kurczewski is a pragmatic full-stack engineer with 11 years of experience specializing in greenfield and 0→1 builds, designing systems for maintainability so prototypes don’t become legacy burdens. He’s delivered and led teams across startups and enterprises—building HIPAA-compliant products with Stripe billing, managing news production systems, and guiding architecture and service transformations. A hands-on developer comfortable from C and system-level work (mpv DRM backend) to Python web backends and front-end polishing (Danbooru-style image board UI), he contributes to well-known open-source projects like mpv and qutebrowser. Marcin balances shipping fast prototypes with long-term quality, a trait evidenced by solo-maintained core projects and scaling a team to win a hospital contract. Based in Greater Poland, he pairs formal CS training with pragmatic engineering and a taste for low-level performance and usability fixes.

11 years of coding experience

13 years of employment as a software developer

Master of Science Computer Science, Master of Science Computer Science at Uniwersytet im. Adama Mickiewicza w Poznaniu

English, Polish, Japanese

Stackoverflow

Stats

14,551reputation

2.1mreached

207answers

29questions

Badges

screen

top-1%

special-characters

top-5%

iostream

top-5%

migration

top-1%

php

top-1%

unicode

top-5%

Github Skills (47)

javascript10

drm10

qt10

python10

image-processing10

image10

rendering10

pi10

c1110

migration10

c1710

php10

pyqt10

screen10

command-line-interface9

Programming languages (22)

C#JavaC++JinjaCRustMakefileGo

Github contributions (5)

rr-/szurubooru

Nov 2015 - Apr 2020

Image board engine, Danbooru-style.

Role in this project:

Full-stack Developer

Contributions:15 releases, 973 commits, 43 PRs in 4 years 5 months

Contributions summary:Marcin contributed to both the front-end and back-end components of the image board engine. Their commits indicate work on UI appearance using CSS, as well as back-end features like user authentication and a tag category system. The user was responsible for refactoring the code, moving code, and ensuring a working system.

danboorupythonimage-board-engineimage-boardes6

mpv-player/mpv

Nov 2015 - May 2017

🎥 Command line media player

Role in this project:

Back-end Developer & System Architect

Contributions:14 commits, 56 PRs, 239 comments in 1 year 6 months

Contributions summary:Marcin primarily contributed to the mpv media player's video output (vo_drm) and related areas, including refactoring and enhancements for the DRM (Direct Rendering Manager) backend. The contributions involved fixing bugs, such as memory leaks and segfaults, and improving functionality by adding features like display FPS retrieval and human-readable connector selection. Furthermore, the user introduced a new terminal-based video output (vo_tct) and made various CLI option adjustments, demonstrating system-level understanding and architectural modifications.

mpvlibavplayeraudiovideo-player

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