Michal Kleiner
Senior Fullstack Engineer at 011 Limited
Wellington, Wellington, New Zealand
Summary
🤩
Rockstar🎓
Top SchoolMichal Kleiner is a Senior Fullstack Engineer and tech lead with over 12 years of professional experience and a coding pedigree stretching back to Pascal and Delphi. He specializes in back-end business logic (PHP, TypeScript) with Vue.js front-ends, REST/GraphQL APIs, and end-to-end ownership of architecture, delivery and reliability. An active open-source core committer for Silverstripe CMS and a Matomo core contributor, he’s shipped fixes and architectural improvements used by government and large public projects. He mentors teams, raises engineering standards around code review, CI/CD and testing, and pragmatically adopts AI coding tools to accelerate delivery without compromising rigor. Based in Wellington, he runs a contracting practice (011 Limited) and seeks Staff/Principal or Tech Lead roles in mission-driven product companies across healthcare, fintech, government or developer tools.
12 years of coding experience
18 years of employment as a software developer
Master, Software engineering, Databases, Master, Software engineering, Databases at Czech Technical University in PragueGeneral Studies, General Studies at Gymnasium Kladno
Spanish, Czech, English, French, Slovak
Stackoverflow
126reputation
1kreached
3answers
0questions
Github Skills (17)
translation10
php10
database-management10
phpunit9
vue-jsx8
apidoc8
api8
vue8
templater8
template-engine8
sql7
html7
git6
silverstripe6
fest5
Programming languages (13)
Github contributions (5)
silverstripe/silverstripe-framework
Oct 2014 - Jan 2023
Silverstripe Framework, the MVC framework that powers Silverstripe CMS
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 releases, 293 reviews, 59 commits in 8 years 4 months
Contributions summary:Michal primarily focused on enhancing the Silverstripe Framework's core functionalities. Their contributions involved implementing database transaction mode checks, improving array key handling within the CustomMethods trait, and addressing logic issues related to the `SS_BASE_URL`. They also added a new method for retrieving classes with specific extensions and introduced tests for DBText->Summary and other improvements related to the core codebase.
cmsphppowersframeworksilverstripe
matomo-org/matomo
Mar 2023 - Apr 2025
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:1014 reviews, 234 PRs, 650 pushes in 2 years 1 month
Contributions summary:Michal contributed to fixing array access issues, adding return types to satisfy interface implementations, and fixing deprecation warnings. They addressed request method checks before usage and updated GTM-related instructions by removing steps and translations. The user's work involved modifying PHP files, template files, and Vue.js code examples, indicating a focus on enhancing existing backend logic, improving code quality, and translating UI elements.
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