Ondřej Mirtes
Founder & Developer at PHPStan
Prague, Prague, Czechia
Summary
🤩
Rockstar🎓
Top School
Top expert inWeb Development and E-commerce Solutions with PHP
Ondřej Mirtes is a founder and hands-on developer with 17 years of experience building and improving PHP tooling and libraries from Prague. He founded and continues to drive PHPStan, a widely used static analysis tool, and contributes across major PHP projects (Doctrine, Carbon, Composer, Rector, CakePHP) focusing on code quality, type safety and maintainability. His work often targets deep, non-obvious improvements—refactoring APIs, fixing type hints, and adapting code for static analysis compatibility—that prevent subtle bugs and ease long-term maintenance. He has held technical leadership roles including CTO at Slevomat and mentors other developers while remaining an active core contributor. Known for meticulous backend craftsmanship, he blends product-minded engineering with community stewardship of essential open-source infrastructure. Outside work he signals a full life—family, gaming and cycling—reflecting a pragmatic, sustained commitment to craft rather than flash.
17 years of coding experience
11 years of employment as a software developer
Ing., Software Engineering, Ing., Software Engineering at Czech Technical University in Prague
Czech, English
Stackoverflow
5,313reputation
514kreached
139answers
18questions
namespaces
top-5%
php
top-1%
Github Skills (69)
dependency-management10
parserator10
parser10
package-management10
annotations10
testing10
mvc10
reflection-api10
integrations10
phpunit10
type-system10
code-analysis10
persistence10
symfony-ux10
refactoring10
Programming languages (26)
Github contributions (5)
phpstan/phpdoc-parser
Nov 2017 - Jan 2023
Next-gen phpDoc parser with support for intersection types and generics
Role in this project:
Back-end Developer
Back-end DeveloperContributions:17 releases, 92 reviews, 88 commits in 5 years 2 months
Contributions summary:Ondřej contributed to the `phpstan/phpdoc-parser` repository by implementing and refining the parsing of PHP documentation (phpDoc) elements. Their work involved integrating PHPStan analysis, fixing potential type errors, and updating coding standards to improve code quality. They also added support for class-string and template tags, and fixed parsing issues, demonstrating a focus on improving the parser's functionality and robustness.
intersection-typesparserphpdocphpstanstatic-analysis
phpstan/phpstan-src
Jul 2020 - Jan 2023
PHPStan's source code. This is where development happens. Check https://github.com/phpstan/phpstan for the distribution repository.
Role in this project:Back-end Developer
Back-end DeveloperContributions:2276 reviews, 1654 commits, 3553 PRs in 2 years 6 months
Contributions summary:Ondřej primarily focused on source code modifications for the PHPStan project, contributing to core functionalities. They implemented improvements and fixes for the PHPStan Pro API, including passing the current PHP version. The user merged changes from the 1.5.x branch into the 1.6.x branch, showing expertise in maintaining and integrating code changes across versions. Further contributions included a fix for potential issues within the project.
phpstan
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.