Jonathan Samosir
Software Developer at WorldBrain.io - Verifying the Internet
Melbourne, Victoria, Australia
Summary
🤩
Rockstar🎓
Top SchoolJonathan Samosir is a software developer with 13 years of experience building full-stack web and mobile applications, currently driving development of the open-source Memex browser extension and mobile app at WorldBrain.io. He specializes in TypeScript across frontend and backend stacks (React Native, IndexedDB, Cloudflare Workers) and has a track record of shipping UI improvements and scalable architectures that improve discovery and annotation workflows. Beyond apps, he has applied Python tooling like LangChain, pandas and Optuna to build a Retrieval-Augmented Generation system and a Bayesian-optimized Forex trading algorithm, demonstrating a mix of product engineering and applied ML experimentation. His background includes teaching computer science and languages, reflecting strengths in communication and mentoring, and he studies deep learning, quantum computing, Vietnamese and Indonesian in his spare time. Based in Melbourne, he combines open-source contribution with a curiosity-driven approach—aiming to learn or advance a skill every day.
13 years of coding experience
4 years of employment as a software developer
University of California San DiegoChinese Studies, 92.6% Grade Average, Chinese Studies, 92.6% Grade Average at National Taiwan Normal UniversityBachelor of Computer Science (Hons), Systems Development, Big Data (research year), First Class Honours, Bachelor of Computer Science (Hons), Systems Development, Big Data (research year), First Class Honours at Monash University
English, Chinese, Indonesian, Vietnamese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (11)
typescript10
javascript10
user-interface10
typescripts10
annotate10
react10
typescript-types10
annotations10
browser-extension9
webextension9
webext9
Programming languages (14)
Github contributions (5)
WorldBrain/Memex
Apr 2017 - Jan 2023
Browser extension to curate, annotate, and discuss the most valuable content and ideas on the web. As individuals, teams and communities.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:13 reviews, 3938 commits, 395 PRs in 5 years 10 months
Contributions summary:Jonathan primarily worked on front-end development tasks within the Memex project, as evidenced by their commits to the dashboard and sidebar refactoring, and specific UI element modifications. Their contributions involved implementing new features, such as the space picker functionality in page results and the addition of annotation-related buttons, and also fixing rendering issues, thereby improving the user experience. The user also made improvements to the ribbon by adding a feature to show the tag picker.
web-extensionannotationsfull-text-searchnote-takingbrowser
poltak/poltak.github.io
Jan 2015 - Mar 2025
test page for learning
Contributions:114 pushes, 15 branches in 10 years 4 months
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