Julien Poitrin
Senior Frontend Software Engineer at LTN
Cologne Bonn Region Germany
Summary
🤩
Rockstar🎓
Top SchoolJulien Poitrin is a Senior Frontend Software Engineer with 10 years of experience building high-performance web applications and developer tools from the frontend to serverless backends. Based in the Cologne/Bonn region, he has driven migrations (Angular→Next.js, Ruby→TypeScript) and improved SEO, performance and testing at companies like Trusted Shops and Shopify, where he contributed notable enhancements to the widely used Shopify CLI. Comfortable across React, Angular, Ruby on Rails and AWS Lambda, Julien also architects component libraries, automations and scalable APIs, and has a track record of stabilizing and accelerating test suites. He brings a methodical, improvement-focused mindset—often leading migrations, introducing better workflows (Git-Flow, Scrumban) and mentoring teammates—backed by a top-grade M.Sc. in Computer Science.
9 years of coding experience
7 years of employment as a software developer
Bachelor of Science (B.Sc.), Informatik, 1,1, Bachelor of Science (B.Sc.), Informatik, 1,1 at Deutsch-Französisches Hochschulinstitut (DFHI)Abitur, 1,2, Abitur, 1,2 at Hochwaldgymnasium Wadern
German, French, English
Github Skills (9)
theme-development10
typescript10
typescripts10
shopify10
oclif10
typescript-types10
cli10
git4
react3
Programming languages (9)
Github contributions (5)
Shopify/cli
Nov 2022 - Jan 2023
Build apps, themes, and hydrogen storefronts for Shopify
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:36 reviews, 16 commits, 17 PRs in 2 months
Contributions summary:Julien primarily contributed to the Shopify CLI, focusing on enhancements to the theme functionality. They added features such as a short flag for theme editor sync and a `--force` flag for theme commands. They also modified the codebase to adopt the CLI UI kit in the `shopify theme list` command and made changes to support the `wdm` gem. These changes demonstrate their involvement in both the CLI tool and associated theme development workflows.
cliecommercehydrogenoclifthemes
Poitrin/musicsheets
Nov 2016 - Mar 2020
Share sheet music and create setlists via Google Drive. Built with Google Apps Script (Back end) and Angular (Front end).
Contributions:36 commits, 21 pushes, 3 branches in 3 years 4 months
google-apps-scriptlyricsgas-editorsheet-musicsetlists
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