Mathieu EUSTACHY
Développeur Ruby On Rails Senior Freelance at Mathieu Eustachy
France
Summary
🤩
Rockstar🎓
Top SchoolMathieu EUSTACHY is a Ruby on Rails freelance developer based in Lyon with five years of full-stack experience building production web platforms for healthcare, legal search, and market-research clients. He has led product-facing engineering work—designing a Doctolib-like booking platform for osteopaths and a survey-builder that outputs deployable social-media surveys—while operating the stack end-to-end on Rails 7, PostgreSQL, Redis and Stimulus. A former strategy consultant and MBA graduate, he combines product sensibility and process-driven delivery with hands-on coding, CI/CD and scaling experience. He also teaches and speaks at Le Wagon, signaling a strength for mentoring and translating technical concepts to non-technical audiences. Notably, Mathieu has bridged complex third-party APIs and compliance-sensitive domains, making him adept at pragmatic integrations in regulated environments.
5 years of coding experience
2 years of employment as a software developer
FullStack developer, Web developer, Batch #548, FullStack developer, Web developer, Batch #548 at Le WagonMaster Grande Ecole (MGE - M2), Entrepreneurship/Entrepreneurial Studies, Master Grande Ecole (MGE - M2), Entrepreneurship/Entrepreneurial Studies at NEOMA Business SchoolClasses Préparatoires aux Grandes Écoles de Commerce,, Classes Préparatoires aux Grandes Écoles de Commerce, at Lycée ChampollionMaster of Business Administration - MBA, Master of Business Administration - MBA at Smith School of Business at Queen's University
French, English, Spanish
Stackoverflow
95reputation
13kreached
10answers
6questions
Github Skills (65)
devise10
filename10
authentication10
mvc10
ruby10
activerecord10
computer-science10
ruby-on-rails10
rubygems10
html10
sca10
rails10
jpeg10
paddle10
validations10
Programming languages (7)
Github contributions (5)
Mth0158/Mth0158
Apr 2021 - Dec 2023
My personal repository
Contributions:4 PRs, 26 pushes, 6 branches in 2 years 9 months
igorkasyanchuk/active_storage_validations
Jan 2023 - Jan 2023
Do it like => validates :photos, attached: true, content_type: ['image/png', 'image/jpg', 'image/jpeg'], size: { less_than: 500.kilobytes }, limit: { min: 1, max: 3 }, aspect_ratio: :landscape, dimension: { width: { in: 800..1600 }
Contributions:7 releases, 56 reviews, 2 commits in 1 day
jpegpngactivestoragevalidationsrails
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