Hi, I'm Johnathan MoJohnathan Mo Johnathan Mo (Jmo).

I'm a CS student at ColumbiaColumbia UniversityColumbia University. I love building software that solves real problems — from AR surgery tools to typing games.

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I've built software across SIGIncoming QSD Intern @ SIGGoogleSWE Intern @ GoogleCGUI LabResearch Assistant @ CGUI LabNIHAR/VR SWE Intern @ NIHUMich Cai LabResearch Assistant @ UMich Cai LabStanford Optima GroupResearch Assistant @ Stanford Optima GroupV1 @ MichiganSenior Advisor @ V1 @ Michigan research labs, startups, and big tech, and quant.

A few things I've built: TTabby — Universal AI autocomplete for macOS — Cursor-like ghost text in every text field.Ddrafted.college — AI-powered college essay editing platform — real-time feedback and draft management.AArgue — AI-powered screen time negotiation app — set limits through conversation, not restriction.Llinkedin-semantic — Semantic search engine for LinkedIn connections and profiles.Ttypr — Competitive typing racing app — real-time multiplayer.CComicgen — AI-powered comic generation tool.

I'm studying CS at Columbia ColumbiaColumbia — 3.95 / 4.0 GPA, previously at U-M U-MU-M — 4.00 / 4.0 GPA, and I make videos about CS, projects, and college life YouTubeYouTube.

4x hackathon winner TreeHacks 2026TreeHacks 2026TreeHacks 2025TreeHacks 2025Devfest 2026Devfest 2026Bootstrapping Reality 2025Bootstrapping Reality 2025

I also post sometimes on GitHubGitHubLinkedInLinkedInXXInstagramInstagramEmailEmail

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