Yohan R
Backend Engineer at Lago
France
Summary
🤩
Rockstar🎓
Top SchoolYohan R is a backend engineer with 11 years of experience building and scaling production-grade services across Rails, Go and Elixir, currently contributing at Lago from France. He has led engineering teams and product-focused initiatives as a Tech Lead at Happydemics, driving infrastructure migrations to AWS, introducing IaC with Terraform, CI/CD improvements, and operational practices for observability and zero-downtime migrations. His hands-on background includes extracting and designing APIs for mobile-first platforms at Heetch and Runtastic, plus freelance and internship experience across full-stack and .NET projects. An active maintainer in the Ruby ecosystem, he has contributed bug fixes and tests to the well-known ActiveModel::Serializer project, improving JSON serialization and association handling. Comfortable spanning strategy to implementation, he blends product-minded engineering with operational rigor and a focus on long-term maintainability.
11 years of coding experience
10 years of employment as a software developer
Master's degree Computer security, Master's degree Computer security at Université de Caen NormandieEngineer's degree Computer Science - E-payments and computer security, Engineer's degree Computer Science - E-payments and computer security at ENSICAEN - Ecole Nationale Supérieure d'Ingénieurs de Caen
French, English
Github Skills (5)
activemodelserializers10
json10
serializer10
ruby10
unit-testing9
Programming languages (29)
Github contributions (5)
rails-api/active_model_serializers
Apr 2015 - Dec 2016
ActiveModel::Serializer implementation and Rails hooks
Role in this project:
Back-end Developer
Back-end DeveloperContributions:37 commits, 66 PRs, 22 pushes in 1 year 8 months
Contributions summary:Yohan primarily focused on fixing bugs and improving the functionality of the ActiveModel::Serializer library, specifically addressing issues related to JSON serialization, associations, and the handling of nil values. They made adjustments to various aspects of the library, including the JSON adapter, array serialization, and attribute handling. Additionally, the user implemented tests for these fixes and enhancements.
railsrubyjsonresource-serializer
GringerApps/minimalin
Oct 2015 - Nov 2016
:watch: Minimalistic watchface for Pebble
Contributions:8 releases, 257 commits, 97 PRs in 1 year 1 month
watchface
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