Zach Zhong

Founder

Founder/CTO at Bubble Lab

San Francisco, California, United States

About

Zach Zhong studied computer science at UCSD and Cornell Tech, and previously co-founded gymii.ai. He is now building Bubble Lab.

LinkedIn ↗X / Twitter ↗

Latest on 𝕏

Zach Zhong @zhubzyz

spent the weekend building a UI to review 5 Claude agents working in parallel git worktrees halfway through I realized I'd reimplemented beam search, except the scoring function is me squinting at screenshots https://t.co/epsxLT2zjv

Jul 27, 2026 · ♥ 3

Zach Zhong @zhubzyz

very productive day need to more consistently spend over 1b tokens https://t.co/zLmUAb2kCb

May 23, 2026 · ♥ 6

Zach Zhong @zhubzyz

spent some time doing prompt caching engineering for our agent, and holy it makes so much of a difference https://t.co/sibAs2ETxz

May 15, 2026 · ♥ 6

Founder/CTO at Bubble Lab YC W26

Intro paths

Zach went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.

Their group partner at YC was Diana Hu, General Partner at Y Combinator — the partner who ran Bubble Lab's batch and knows the company first-hand. YC profile ↗

→

In turn, Zach can intro founders to Bubble Lab's investors below.

Bubble Lab's investors · 1

Y Combinator

Co-founders at Bubble Lab

Selina LiFounder

Experience

Bubble LabCo-Founder and CTOcurrent2025 — present
gymii.aiCo-Foundercurrent2024 — presentNew York, United States
Truffle HealthSoftware Engineer2023 — 2024New York, United States
UC San DiegoComputer Science and Engineering(CSE) Instructional Assistant2023 — 2024
CutiePetFounding Enginner2021 — 2023San Diego, California, United States
SurfnFrontend Developer2020 — 2021San Diego, California, United States
School-ConnectionTutor2019 — 2020Walnut, California, United States

Education

Cornell UniversityMaster of Engineering - MEng, Computer Science2024 — 2025
UC San DiegoBachelor's degree, Computer Science2020 — 2024
Cornell TechMaster of Engineering - MEng, Computer Science2024 — 2025
South Hills High School2016 — 2020

Skills & more

React.jsAmazon Web Services (AWS)1Database Management System (DBMS)2SQLPython (Programming Language)1REST APIsGenerative AIAPITypeScriptOptical Character Recognition (OCR)Java SwingOAuth

+12 more

NestJSWeb ApplicationsAnalyticsWritten CommunicationProblem SolvingCommunicationDatabasesGitHTMLCascading Style Sheets (CSS)C#Java

From Zach's professional profile.