Romain Guilloteau
Lead Software Engineer at BuyCo
Lille, Hauts-de-France
Summary
👤
Senior🎓
Top SchoolRomain Guilloteau is a Lead Software Engineer based in Lille with 11 years building products across startups and small businesses, from social media and job hunting to neobanking and maritime logistics. He combines hands-on full-stack chops in Ruby on Rails, JavaScript/TypeScript and Go with leadership experience scaling teams and codebases as BuyCo’s lead engineer. Comfortable as both sole developer and team lead, he has repeatedly moved between innovation-focused roles and production delivery, shaping architecture and developer workflows. Colleagues know him for balancing technical depth with attention to the human side of engineering—mentoring, hiring and cross-functional collaboration. A pragmatic problem-solver, he prefers shipping reliable systems over theoretical elegance and often surfaces practical improvements that reduce long-term maintenance cost.
11 years of coding experience
9 years of employment as a software developer
Licence Développeur Multimédia, Programmation / développeur informatique, général, Licence Développeur Multimédia, Programmation / développeur informatique, général at L'École MultimédiaBaccalauréat scientifique, Baccalauréat en lycée d''enseignement général, Baccalauréat scientifique, Baccalauréat en lycée d''enseignement général at Lycée Lamarck
French, English, Dutch
Github Skills (50)
zendesk-api9
wrapper8
face-api8
api-client7
api7
ruby-on-rails6
search-interface6
zendesk6
rails6
gitignore6
searching6
ruby6
sidekiq6
activemodel5
nodejs5
Programming languages (8)
Github contributions (5)
rubyistdotjs/zuckerbergerme
Nov 2018 - Dec 2019
Replace faces in a picture with the Zuck
Contributions:21 commits, 10 pushes, 1 branch in 1 year 1 month
reactface-apitailwindcsscomputer-visionpicture
rubyistdotjs/native-crypto
May 2018 - Dec 2019
Contributions:17 commits, 9 pushes, 1 branch in 1 year 7 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.