Marcin Kuzminski
Sr. Director Of Product at Self Emplyoed
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMarcin Kuzminski is a seasoned technology and product leader with 16 years of experience building developer-focused platforms and scalable backend systems. As Sr. Director of Product at Cint he drives strategy across identity, AI-powered yield management, supply and respondent experience, combining product vision with hands-on engineering judgment. He previously founded and served as CTO of RhodeCode, growing an enterprise source-code management platform used by finance, government and automotive customers through a successful exit. Marcin’s early career as a Python systems engineer and open-source contributor includes notable robustness and scalability work on projects like Waitress (WSGI server) and Dulwich (pure-Python Git), reflecting deep expertise in server internals and version-control tooling. Comfortable switching between scrappy startups and large organizations, he blends founder grit with enterprise product discipline. Based in Warsaw, he’s currently balancing senior product leadership with stealth engineering work and continued stewardship of RhodeCode.
16 years of coding experience
20 years of employment as a software developer
IT, IT at Polish-Japanese Academy of Information Technology
English, Polish
Stackoverflow
1,761reputation
182kreached
41answers
0questions
flask
top-5%
python
top-5%
Github Skills (13)
version-control10
git10
http-server10
debug10
dulwich10
python10
testing10
flask9
cpython9
debugging9
flask-sqlalchemy6
mercurial6
sqlalchemy6
Programming languages (8)
Github contributions (5)
jelmer/dulwich
Apr 2012 - Jun 2015
Pure-Python Git implementation
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 1 PR in 3 years 1 month
Contributions summary:Marcin contributed significantly to the `dulwich` project, a pure-Python Git implementation. Their work involved fixing bugs related to repository handling and server interactions, and implementing new features such as symbolic reference support within the porcelain module. They also made improvements to the code for Python 2.4 compatibility and added checkout support for the `clone` feature. The user’s contributions focused on enhancing the core functionalities of the Git implementation.
pythonversion-controlmercuriallibgit2git-addons
Pylons/waitress
May 2013 - May 2013
Waitress - A WSGI server for Python 3
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits, 2 comments in 14 days
Contributions summary:Marcin primarily contributed to the Waitress WSGI server by addressing code issues, implementing new features, and improving server performance. They fixed a bug related to buffer sizes exceeding maximum integer limits, ensuring compatibility. The user implemented a new option to use `poll()` instead of `select()` in `asyncore.loop()`, addressing file descriptor limits, and updated documentation to reflect this feature. These changes demonstrate a focus on improving the server's robustness and scalability.
pythonwsgi-serverwaitresspython-3python3
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.