Józef Bielawski
Engineering Manager at Aterian (NASDAQ: ATER)
Łowicz, Łódź Voivodeship, Poland
Summary
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RockstarJózef Bielawski is an engineering manager with 15 years of hands-on backend and leadership experience, currently leading engineering teams at Aterian while driving feature development, recruitment, and technical direction. He combines deep PHP and Symfony expertise—evidenced by sustained contributions to high-profile open-source projects like Twig, Symfony components, Composer, and Rector—with practical experience modernizing large codebases and migrations (PHP 7→8.1, Symfony 4.4→5.4). Previously a CTO who built a telemedicine platform serving ~30k patients, he blends product-facing architecture decisions with delivery-focused team practices such as OKRs, retrospectives, and CI adoption. Known for improving code quality and maintainability, Józef frequently contributes subtle but impactful refactors and tooling improvements across the PHP ecosystem. Based in Łowicz, Poland, he prefers pragmatic modular-monolith approaches and has a track record of turning business requirements into reliable, testable systems.
15 years of coding experience
11 years of employment as a software developer
Stackoverflow
422reputation
25kreached
9answers
0questions
Github Skills (76)
dependency-management10
package-management10
testing10
http10
authentication10
templater10
phpunit10
pagination10
symfony-ux10
refactoring10
web-development10
composer10
code-optimization10
symfony-component10
react-components10
Programming languages (6)
Github contributions (5)
hwi/HWIOAuthBundle
Jun 2012 - Jul 2022
OAuth client integration for Symfony. Supports both OAuth1.0a and OAuth2.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:27 releases, 113 reviews, 842 commits in 10 years 3 months
Contributions summary:Józef implemented core OAuth client integration features for the Symfony framework. They introduced an OAuthHelper class and Twig extensions, enabling the dynamic setting of login URLs within templates. The user's contributions involved modifications across multiple files, including the creation of helper and extension classes, along with updates to existing controller and configuration files, adding essential functionality to support both OAuth1.0a and OAuth2 protocols. The user also added the ability to manage the token in the response data.
apiphpauthenticationsymfony-bundleoauth1
Sylius/Sylius
Jun 2012 - Nov 2021
Open Source eCommerce Framework on Symfony
Role in this project:Back-end Developer
Back-end DeveloperContributions:73 reviews, 472 commits, 117 PRs in 9 years 6 months
Contributions summary:Józef contributed to the Sylius e-commerce framework, focusing on the CartBundle. The commits involved refactoring cart functionality to reuse existing code for collection management within the Doctrine2 environment. The changes included modifications to test cases and model classes, with a focus on ensuring the correct behavior of cart items and their quantities. Furthermore, this user refactored the `CartOperator` into event listeners and added new functionality for handling item data.
apisyliusecommercephpheadless-ecommerce
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