Matthieu Libeer
CTO Co-founder at SalesPath
Paris, Ile-de-France
Summary
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Rockstar🎓
Top SchoolMatthieu Libeer is a hands-on CTO and co-founder with a decade of experience building full-stack web platforms using Ruby on Rails, React, Postgres, Elasticsearch and AWS. Based in Paris, he scaled from senior engineer to software architect at talent.io before founding SalesPath, where he still drives product and hiring as the first full-time technical leader. He contributes to open-source front-end work—most notably improving UX and state management for an AI-powered rich-text editor—reflecting a focus on polished interfaces and resilient editor behavior. Trained in data science and mathematics at Ecole Centrale Paris and Université de Paris Orsay, he blends rigorous analytical thinking with product-minded engineering. Colleagues describe him as an operator-founder who moves quickly from prototype to production while safeguarding long-term maintainability.
10 years of coding experience
6 years of employment as a software developer
Data Science, Data Science at Ecole Centrale ParisClasse Préparatoire, Mathematics & Physics, MPSI -> MP*, Classe Préparatoire, Mathematics & Physics, MPSI -> MP* at Lycée FaidherbeLicence de Mathématiques Fondamentales, Licence de Mathématiques Fondamentales at Université de Paris Orsay
French, English, German, Chinese
Stackoverflow
2,315reputation
168kreached
92answers
1question
Github Skills (18)
javascript10
typescript10
slate10
typescript-types10
typescripts10
react10
shadcn-ui9
html6
database6
ruby-on-rails6
wysiwyg6
ai6
timeout6
rspec6
css6
Programming languages (5)
Github contributions (5)
udecode/plate
Jan 2024 - Mar 2024
A rich-text editor powered by AI
Role in this project:
Front-end Developer
Front-end DeveloperContributions:5 reviews, 5 PRs, 3 pushes in 1 month
Contributions summary:Matthieu primarily contributed to the development of the "toggle" feature within the rich-text editor. Their work focused on implementing the UI components, managing their state, and integrating them with the editor's functionality. This included modifications to the toggle's behavior, its visual representation, and its interaction with the editor's internal logic. Additionally, they refactored code for efficiency and improved the user experience by preventing focus loss.
plugin-systemrich-textwysiwyg-editorrichtextjavascript
Liboul/martyr
Jun 2017 - Feb 2021
Add data mart and pivoting functionality to Active Record models
Contributions:2 PRs, 10 pushes, 4 branches in 3 years 7 months
pivotingrailsdata-martrubyactive-record
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