Matthias Wirtz
Head Of IT at ARMEDANGELS
Cologne Bonn Region Germany
Summary
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RockstarMatthias Wirtz is a Head of IT based in the Cologne–Bonn region with 13 years of experience blending hands-on backend engineering, database expertise, and IT leadership. At ARMEDANGELS he progressed from IT project manager to Head of IT, steering infrastructure, projects, and cross-functional delivery while maintaining a developer’s attention to detail. An active open-source contributor, he has improved PHP tooling and frameworks—contributing to notable projects like Psalm and CakePHP—and fixed subtle database and HTTP edge cases in Phinx and CakePHP. His work spans backend logic, DB migrations, testing and DevOps (including PostgreSQL upgrades and Grafana tweaks), showing he’s comfortable across application code and operational environments. Colleagues would describe him as pragmatic: a systems-minded leader who still dives into type systems, function signatures and test suites to solve tricky, production-facing problems.
13 years of coding experience
Github Skills (42)
database-migrations10
cakephp10
type-inference10
static-analysis10
sqlite10
postgresql10
admin10
elixir10
testing10
databases10
database-administration10
grafana10
typehinting10
php10
database-migration10
Programming languages (20)
Github contributions (5)
cakephp/phinx
Sep 2017 - Mar 2022
PHP Database Migrations for Everyone
Role in this project:
Back-end Developer / Database Engineer
Back-end Developer / Database EngineerContributions:3 reviews, 8 commits, 6 PRs in 4 years 7 months
Contributions summary:Matthias primarily contributed to database adapter logic within the Phinx project. Their work involved fixing database-specific issues, such as PostgreSQL limitations with text types and supporting SQLite's URI scheme, including cache and mode parameters. The user also added a feature to support the cache query parameter. This included modifying code in multiple adapter files and documentation.
mysqlphp-database-migrationsphpphp71mysqli
cakephp/docs
Sep 2017 - Nov 2020
CakePHP CookBook
Role in this project:Technical Writer
Technical WriterContributions:18 commits, 9 PRs, 6 comments in 3 years 2 months
Contributions summary:Matthias primarily contributed to the documentation of the CakePHP framework, as evidenced by the commit messages and file changes within the `docs` repository. Their work involved clarifying existing documentation, adding new sections, correcting errors, and updating examples across multiple components, specifically focusing on controllers, components, and the pagination features. The changes reflect a focus on improving clarity, providing comprehensive usage examples, and correcting technical inaccuracies within the documentation set.
phpcookbookcakephp
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