David Lonjon
Senior Software Engineer at Self-employed
Seoul, South Korea
Summary
🤩
Rockstar🎓
Top SchoolDavid Lonjon is a senior software engineer based in Seoul with 12 years of professional experience and nearly 20 years of hands-on practice helping startups, agencies, and global brands ship web and mobile products. He blends front-end, back-end, and product development with an appreciation for design, marketing, and strategy, and is comfortable adapting to any technology stack or team. As a freelancer and consultant he’s supported clients like Automattic (contributing to the popular Jetpack plugin), XWP, Chanel, and Market Kurly, often tackling high-traffic WordPress migrations and performance-focused refactors. Known for transparent communication and long-term partnerships, he prioritizes human-centered collaboration and will admit when a project isn’t the right fit. He brings a craftsman’s mindset to problem solving, favoring clarity, honesty, and pragmatic solutions that deliver measurable impact.
12 years of coding experience
13 years of employment as a software developer
Higher National Diploma, Computer Science, Higher National Diploma, Computer Science at Université Blaise Pascal (Clermont-II) - Clermont-FerrandMaster's Degree, Engineering Multimedia, Distinction, Master's Degree, Engineering Multimedia, Distinction at Nottingham Trent University
French, English, Korean, Spanish
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (16)
wordpress10
typescript10
javascript10
php10
typescripts10
js10
typescript-types10
plugin10
automation-testing9
automation9
automations9
svelte9
css8
react8
gulp6
Programming languages (5)
Github contributions (5)
Automattic/jetpack
Aug 2020 - Dec 2021
Security, performance, marketing, and design tools — Jetpack is made by WordPress experts to make WP sites safer and faster, and help you grow your traffic.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:49 reviews, 102 commits, 48 PRs in 1 year 3 months
Contributions summary:David contributed to the Jetpack plugin by refactoring the Lazy Images package to rely on the Assets package, ensuring better code organization and asset management. They also addressed linting and formatting issues in various files, including JavaScript, TypeScript, and Svelte components, using the project's established standards. Additionally, the user implemented a feature to clear dismissed Critical CSS recommendations, enhancing the user interface and functionality.
reactexpertswordpressphpsecurity
davidlonjon/wp-deploy
Jul 2014 - Mar 2015
Contributions:49 commits, 17 pushes in 8 months
capistranowordpressdeployingsites
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