Maciej Zawadzinski
Partner at FirstPartyCapital
Lower Silesian Voivodeship, Poland
Summary
👤
SeniorMaciej Zawadzinski is a serial entrepreneur and investor with 17 years of experience building and scaling privacy-focused analytics and AdTech/MarTech businesses from Poland. He founded and led Piwik PRO and Clearcode, launched a programmatic DSP that exited to Gravity4, and now invests operationally through Zawadzinski.com, FirstPartyCapital, and as a partner at Hard2beat backing early-stage DeepTech. Technically hands-on, he contributes back-end fixes and memory-leak mitigations to the notable open-source Matomo analytics project, reflecting a rare blend of product leadership and low-level engineering. His work consistently emphasizes privacy-first analytics and data control as a competitive advantage for B2B SaaS. Based in Lower Silesia, he combines operator instincts with angel-stage capital to help founders scale globally. An often-overlooked strength is his continuous involvement across both codebase maintenance and strategic board-level advising, keeping him fluent in execution as well as vision.
17 years of coding experience
19 years of employment as a software developer
English, German, Polish
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (15)
php10
back-end-development10
mysql10
analytics9
web-analytics9
privacy8
databases8
database8
logfile7
logger7
logging7
google-analytics-api6
matomo6
universal-analytics6
google-analytics6
Programming languages (1)
Github contributions (5)
matomo-org/matomo
Apr 2009 - Jul 2010
Empowering People Ethically 🚀 — Matomo is hiring! Join us → https://matomo.org/jobs Matomo is the leading open-source alternative to Google Analytics, giving you complete control and built-in privacy. Easily collect, visualise, and analyse data from websites & apps. Star us on GitHub ⭐️ – Pull Requests welcome!
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 commits, 1 comment in 1 year 3 months
Contributions summary:Maciej primarily contributed to the back-end of the Matomo project, modifying core tracker functionality and implementing improvements. They refactored existing code by changing method visibility and adding events within the tracker. Additionally, the user addressed memory leaks during archiving processes and resolved bugs related to unique visitor calculations. The user's commits also touched on fixing UI-related issues.
google-analyticsmatomoanalyticsphppiwik
zawadzinski/themoat-sandbox
Apr 2026 - Jun 2026
Contributions:14 pushes, 1 branch in 2 months
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