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 (41)
zendesk-api9
wrapper9
zip-archive7
face-api7
api7
aes-encryption6
zendesk6
searching6
javascript6
api-client6
ruby-on-rails5
search-interface5
nodejs5
ruby5
sidekiq5
Programming languages (8)
Github contributions (5)
rubyistdotjs/romainguilloteau
Jun 2023 - Jun 2026
Contributions:2 PRs, 17 pushes, 3 branches in 3 years
buyco/go-portcast-sdk
Mar 2023 - Mar 2026
Contributions:4 reviews, 6 PRs, 4 pushes in 3 years
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