Mathieu Claessens
Team Leader & Web Developer. A blend of good humour, rigour and kindness.
Contact
- Email contact@markupconsult.com
- Téléphone +32 476 52 42 85
- Localisation Liège – BE
- GitHub /MrCaktuz
- LinkedIn /mathieuclaessens
Career
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2026 2025
Team Lead & Developer @ Synerglass
Team Lead and Web & Mobile Developer on Synerglass' integrated management software. I make strategic technical decisions, drive initiatives to strengthen team cohesion, enhance deliverable quality, and accelerate project timelines, while actively contributing as a developer within the team. -
2025
Full Stack Developer @ Freelance
I designed and developed the entire project from scratch. The goal was to create a tailor-made website for a non-commercial recipe repository. The main focus was to display content as clearly and simply as possible while using minimal resources. Close communication with the client was key to the success of this project. -
2025 2023
Lead Full Stack Developer @ Resa
I actively participated in the design, development, and implementation of their design system across multiple web applications. I played an important role in developing new features as well as maintaining existing ones. I also played a key role in optimizing the development and release processes within the team. -
2023 2021
Front-End Developer @ Partenamut
I played a key role in the integration and design of new screens and features for their web application, while also working on the maintenance of existing features. In constant communication with analysts, designers, and back-end developers (JAVA), I contributed to implementing the most optimal solutions that meet the client's needs in the public health sector. -
2021 2018
Lead Front-End Developer @ Référence Fitness
I started by integrating the designs and quickly took on the role of lead Front-End developer, becoming responsible for the Front-End development of the web application for selling online fitness courses. From analyzing the features to their development, I worked in close collaboration with the designer and the Back-End developer (PHP). -
2018 2017
Full Stack Developer @ Swing Actions
I implemented the critical financial management module on the web application of the Association of Children in Care in Belgium. This app is designed for the administrative staff of the association and aims to facilitate, speed up, and automate their work with a clear, intuitive, and smooth interface. -
2017
Internship Full Stack Developer @ Exit Studio
I developed a photography website for a client of the web agency, while also working on the development of the agency's showcase site, as well as creating a website for a sports club for my final thesis (TFE). My role ranged from developing WordPress sites to creating custom designs and integrating them.
Education
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2017 2014
Bachelor in Graphic Techniques and Web Development
Haute École de la Province de Liège -
2011 2010
Certificate of completion
Bonduel Hight School, Wisc - USA -
2010 2004
Certificate of Upper Secondary Education
Athénée royal Norbert Collard