
Arnaud De Abreu
- Certified
A developer since 2004, Arnaud obtained a PHP certification in 2008, eager to move into web development as well as open source, particularly PHP.
Over the past 15 years, he had the opportunity to participate in the development of projects with technical or business challenges, as well as in production maintenance under heavy load.

Félix Eymonot
- Certified (advanced)
Félix is a PHP developer specializing in Symfony since 2017, certified "Advanced" in version 6. With agency experience across multiple industries, he builds robust, scalable solutions tailored to business needs.
Passionate about Symfony and open source, he actively contributes to the community and has even spoken at a tech conference.
When he's not engineering clean, maintainable code, he's drawn to the world of DC Comics—especially Nightwing, because whether in tech or in Gotham, agility, integrity, and a strong sense of justice always make the difference 🦇

Hugo Alliaume
- UX Core Team
A full-stack developer since 2009, Hugo likes to learn a lot of new things, so he's super versatile. Since then, he has specialized in web development, mainly with PHP and JavaScript, but also in back-end and browser-side performance optimization.
Hugo recently joined the Symfony UX Core team. A fan of open-source since the very beginning, he has contributed to it either with his own projects or by working on Symfony, more specifically on Webpack Encore and Symfony UX.
As a fine gourmet, you can probably find him at the conference food buffets.

Jérémy Romey
- Certified (advanced)
Jérémy is a certified Symfony developer. He contributes to the Symfony codebase and its ecosystem while participating in community events.
He helps PHP and Symfony developers build high-quality applications. His goal is to help teams improve the way they work and gain confidence in the code they produce.
He never says no to a good espresso ☕

Mathias Arlaud
- COO
- Core Team
- Certified (expert)
As a speaker, consultant, lead developer, and PHP/Symfony trainer, Mathias worked for two years with the creator of Symfony and two years with the creator of API Platform, Mercure, and FrankenPHP.
By being an open-source enthusiast, he greatly contributes to the Symfony framework and its ecosystem, especially focusing on the data serialization system. Specializing in API development, he brings his expertise to promote the development of fast, robust, and maintainable solutions.
Don't ask why, but to the question PHPStorm vs VsCode, he still answers VIM.

Robin Chalas
- CEO
- Core Team
Robin is a Software Architect & OSS Maintainer involved into the PHP/Symfony ecosystem for more than a decade, working as CEO and consultant @baksla.sh.
As a Symfony Core Team Member, he contributes to the framework by fixing bugs and security vulnerabilities but also bringing new features to its core, continuously improving its design but also helping contributors to contribute on Symfony and other popular community packages he maintains.
As a Consultant, he enjoys pointing technical teams of any size to the right direction based on his experience with designing large software systems.
Also, he loves helping and sharing his knowledge by participating to support platforms, reviewing contributions and speaking at tech conferences.
When he's away from keyboard, Robin is either petting his cats or playing Pétanque.

Valmont Pehaut Pietri
Valmont is a developer specializing in PHP/Symfony. After 10 years in sales, he transitioned into web development two years ago. He focuses on backend development, code optimization, and occasionally works with Vue.js.
He is also active in the tech community through talks and open-source contributions.
Valmont is also deepening his knowledge in design patterns, software architectures, and preparing for the Symfony 7 certification.
A big fan of Lorcana, you'll often spot him at conferences, where instead of joining the usual after-work drinks, he'll be training with his friend Jérémy—though, of course, he's always up for both! He's also a craft beer enthusiast, but beware: if you bring up the subject, the conversation could get as intense as a political debate.
Shhhht! The crew is at work 🤫
Discover the baksla.sh team members while they're working
💡 Click on a member to discover their full profile.

Hugo Alliaume
- UX Core Team

Félix Eymonot
- Certified (advanced)

Robin Chalas
- CEO
- Core Team
It takes advantage of polymorphism and reduce coupling between classes.

Mathias Arlaud
- COO
- Core Team
- Certified (expert)
We must rely as much as possible on code from that layer.

Jérémy Romey
- Certified (advanced)

Arnaud De Abreu
- Certified

Valmont Pehaut Pietri

Jules Pietri
- Certified (expert)
- Former Core Team

Yazid Hassani

Jules Pietri
- Certified (expert)
- Former Core Team
Reviewers (9)









Reviewers (9)
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Arnaud De Abreu
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Félix Eymonot
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Hugo Alliaume
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Jérémy Romey
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Jules Pietri
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Mathias Arlaud
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Robin Chalas
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Valmont Pehaut Pietri
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Yazid Hassani