Product and tech leadership for Reflex Ostéo, France's #1 national osteopathy duty network — booking platform, training, and business operations.

Day to day: Rails architecture & delivery, analytics (GA4, Meta CAPI), tech compliance, email migration, IT structuring, and support on business deals where tech is positioned as an asset.

Stack: Ruby on Rails, Hotwire/Stimulus, PostgreSQL, CI/CD, cloud

Built InkGenius end to end (creative writing platform for kids): product specs, UX/UI design, and development.

From idea to production — product ownership, interfaces, and code.

Stack: Ruby on Rails, Hotwire/Stimulus, PostgreSQL

On-demand expertise for Lesilex (netlinking / SEO strategy): software architecture, technical pain points, and DevOps.

Targeted expert engagements — unblock, structure, harden.

Developer then lead developer at Discurv (ex-Madeinvote), a consumer research institute.

Built from scratch an automatic questionnaire-building platform (~50 man-days saved/year) and automated respondent data flows between tools via APIs.

Stack: Ruby on Rails, PostgreSQL, Redis, Stimulus, GitLab CI, Scalingo

Development and maintenance of a legal expert search platform for a London market player (https://www.expertease.tech/)

Technology stack: Ruby on Rails (7.x), Ruby (3.x), PostgreSQL, Redis, StimulusJS, Github, GithubActions, Heroku

Regular teaching at Le Wagon Lyon (Web development bootcamp).

National speaking: workshops, conferences, the 'How to use Github' Career Week workshop, and public sessions such as 'Learn how to code a game with Javascript'.

Manage the backlog, solve bugs, add new features

https://github.com/igorkasyanchuk/active_storage_validations