Mateusz Tymek
CTO & Co-Founder at Cleeng
Greater Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolMateusz Tymek is a seasoned CTO and co-founder with 14 years of experience building scalable subscription and OTT platforms, currently leading Cleeng’s product and technical strategy. He combines hands-on architecture and coding—having evolved Cleeng from an e-commerce framework to a high-throughput Subscriber Retention Management platform used by global brands—with strong expertise in AWS, DDD, CQRS and event sourcing. A pragmatic leader, he emphasizes clear communication, team autonomy and measurable retention KPIs over vanity metrics. Mateusz is also an active open-source contributor to mature PHP projects like Zend Framework and zend-diactoros, where he improved error handling, validation and test coverage—work that reflects his focus on robustness and maintainability. Based in Greater Poland, he pairs technical depth with management training from ICAN Institute and a technical foundation in computer engineering physics.
14 years of coding experience
13 years of employment as a software developer
Bachelor of Science (BS) Computer Engineering Physics, Bachelor of Science (BS) Computer Engineering Physics at Uniwersytet im. Adama Mickiewicza w PoznaniuManagement, Management at ICAN Institute
Polish, English
Stackoverflow
46reputation
568reached
1answer
0questions
Github Skills (12)
unit-testing10
stream10
error-handling10
zend-framework10
php10
test-driven-design10
psr-710
testing9
exception-handling9
scrollbar6
canvas6
facebook6
Programming languages (6)
Github contributions (5)
zendframework/zend-diactoros
May 2015 - Jan 2016
PSR-7 HTTP Message implementation
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:21 commits, 7 PRs, 25 comments in 8 months
Contributions summary:Mateusz primarily focused on improving the robustness and maintainability of the `zend-diactoros` library. They fixed stream validation issues, removed unnecessary tests, and added exception handling for various stream operations. Additionally, the user implemented new test cases and refactored existing ones, enhancing the test suite's coverage and accuracy for the library's core functionalities. The changes indicate a focus on ensuring the correct behavior of the library.
phphttp-messagepsr-7psrmessage
zendframework/zendframework
Nov 2011 - Mar 2014
Official Zend Framework repository
Role in this project:Back-end Developer
Back-end DeveloperContributions:18 commits, 1 comment in 2 years 4 months
Contributions summary:Mateusz primarily contributed to the Zend Framework's JSON server component. Their work focused on fixing exceptions, addressing missing parameters, and refining error handling within the server's logic. A key area of focus was ensuring proper validation of parameters. The user also made significant changes to the route matching implementation.
zendzend-frameworkphpframeworkmodular
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