About me
I’m Mattias Michaux (Mollux), a Belgium-based product and solution architect who also works hands-on as a full-stack engineer. Open source has been the foundation of my professional path for more than 20 years, and it still shapes how I build, collaborate, and share work.
This page focuses on who I am and how I work. For short-term updates on current focus, see the Now page.
Work
I work primarily as an architect: product architect, solution / enterprise architect, technical lead, … My core contribution is designing systems that are coherent across product, platform, and operations, then leading teams through implementation with clear ownership, quality standards, and long-term maintainability in mind.
I also stay hands-on as a full-stack engineer in the broad sense. For me, full stack includes front- and backend development as well as the full platform and infrastructure chain: compute, networking, container runtimes, observability, scaling, and production operations. I thrive in managing the application and infrastructure as part of one system.
Programming language or framework is not a constraint in that process. The key is understanding the problem correctly and then implementing the right solution in the language and stack that fit the context.
My strongest work is on multi-layer problem solving where there is no single-layer fix. The same systems approach applies to AI and agentic engineering: usable outcomes depend on architecture, platform reliability, and implementation details working together.
Open source
Open source software is foundational to my professional path. It enabled me to learn, build, and grow early in my career, and it still shapes how I choose tools, platforms, and ecosystems today.
I all started with Drupal because I could use it, inspect it, and contribute to it. That pattern stayed consistent across my work: I prefer open systems where I can build, improve, and give back instead of only consuming what others produce.
Ecosystems and community
Drupal
- User profile
- Maintainer of various modules, mainly focussed search and geospatial
Mautic
- Product lead from Apr 2023 - Oct 2024
- Drove the composer adoption and containerization support in the ecosystem
- 200+ MR’s in the various parts of the ecosystem
Various other ecosystems
I’m also contributing to various other ecosystems, whenever I encounter an issue while thinkering around.
These include Home Assistant, Langflow, Node.js, CiviCRM, …
Security
I also have an urge to try and break stuff, mainly on security level.
The "what if I try this? or that?" question pops up in my head when I see input validation logic, header parsing, …
Some of the public SA’s I’ve been involved in (reporting and/or fixing)
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Mautic
5 SA’s: https://github.com/advisories?query=credit%3Amollux+mautic
Speaking and knowledge sharing
I regularly share practical lessons from architecture, platform engineering, and real-world delivery constraints.
Typical topics: architecture trade-offs, reliability, scaling, infrastructure operations, and AI/agentic engineering in production.
Some of the recent events I have spoken at:
- Dec 2020 - Drupalcon Europe
The state of Drupal Development Environments - panel discussion - Oct 2021 - Drupalcon Europe
Drupal and Ansible: a way of managing a 2000+ environment infrastructure - Jun 2022 - Mauticon Global
Mautic and Composer: the way forward - Jul 2024 - Mauticon Global
Enhancing Mautic’s Release Planning and Strategy - Apr 2025 - Drupal Dev Days Ghent
Beyond the buzzword building a practical DevSecOps culture in your organization
Experience
GitLab
- Fullstack Engineer, DevRel Engineering
Details
Bridging the gap between prodcut and contributions
Currently focussed on AI enablement, by organizing hackathons, enabling contributors to work on the AI catalog and related systems, ...
Dropsolid Digital Experience Company
- Head of Engineering (Jun 2022 - Sep 2025)
- Lead Product architect (Jun 2018 - Jun 2022)
- Senior Drupal developer (Jan 2018 - Jun 2018)
Details
Led the product and platform architecture for the Dropsolid Experience Cloud, balancing delivery speed with long-term maintainability.
In the engineering leadership phase, I helped define technical direction, improve team ownership, and standardize engineering practices around quality, release flow, and system reliability.
I was also part of the compliance team, where the main focus was on preparing for and achieving the ISO 27001 certification.
Mediaraven / Jeugdwerknet vzw
- Drupal Developer / Sysadmin · Mediaraven (Jan 2013 - Jan 2018)
- Drupal Developer / Sysadmin · Jeugdwerknet vzw (Jan 2010 - Dec 2012)
Details
Worked end-to-end on Drupal platforms, combining application development with infrastructure operations. Typical work included delivering features, maintaining deployments and hosting environments, and supporting day-to-day platform stability for editorial and community teams.
Chirojeugd Vlaanderen vzw
- Drupal Developer
Education & formation
This section includes formal education and non-formal formation that shaped how I lead, collaborate, and take responsibility over time.
KATHO (now VIVES)
- Bachelor in Applied Computer Science - Application Development
Chirojeugd Vlaanderen
- Youth leader (2003 - 2010 · 7y)
- Member (1992 - 2010)
Work with me
I run my own company and can work both as an employee and as an independent consultant, depending on the context.
I am open to selected contracts and long-term collaborations.
The best way to reach me is via LinkedIn or GitHub.
If you want to see what I am actively focused on now, visit the Now page.