I'm John Jung. I'm in New York City and build things.
I used to work at NASA Goddard Flight Center / University of Maryland building and analyzing data from cosmic rays.
Graduated at 19, then went into academia doing bioinformatics on clinical and research datasets with over 30+ publications in a span of 4 years at NYU Langone Medical Center and University of Rochester Medical Center.
Started Pith Studio, building for startups and Fortune 500 companies build and scale their products.
Started an AI first email app that got acquired by Nylas.
Today, I'm the VP of Engineering at Nylas, building the future infrastructure for productivity apps.
Projects
Created Nov 2025
Webhook Rodeo
The easiest way to receive, transform, route, debug and replay webhooks. Wrangle webhooks like a cowboy.
webhook.rodeo
Created Oct 2025
Receptive
Never miss a phone call again. AI-powered phone answering service that handles your calls professionally.
withreceptive.com
Created Sep 2025
Collective
Finance simplified for your community. Shared budgeting, expense management, and spending controls for groups.
bankwithcollective.com
Created May 2025
Stride Systems
Control your apps with AI. Stride files tickets, updates docs, and pings teammates when the work is done.
stride.systems
Created Feb 2025
skeet.build
Connect Cursor to MCP tools
skeet.build
Created Oct 2024
check.supply
Send checks in the mail. No envelopes, stamps, or trips to the post office required -- all from your iPhone
check.supply
Created Oct 2024
MyWalletPass
Turn every membership, library, park, gym, and club card into an Apple Wallet pass. Even if they don't officially support it.
mywalletpass.com
Created Mar 2024
Buoy Club
Social listening for creators, founders and influencers. iOS, Android and Web App for the farcaster ecosystem.
buoy.club
Created Apr 2015
june.ai
An AI first email app that got acquired by Nylas.
Made with in NYC