2x founder

Effy Zhang

Member of Technical Staff @Anthropic. Former CEO & Founder at Baserun (Acquired) | ex-Cruise | ex-Square.

Co-founder

2025Co-founder· Stealth Startup

Founder · since 2023

Company

Stealth Startup

Role

Co-Founder

Stage

—

no public source

Raised

—

no public source

Based

San Francisco Bay Area

Founder / co-founder — the company's markEmployee / research role

Profile coverage5 of 7 · missing posts, contact

Baserun

Observability and evaluation platform for LLM apps.

Experience

Career

Anthropic
Member of Technical Staff · United States · 2025 – Present
2025
Stealth Startup
Co-founder
Co-Founder · San Francisco Bay Area · 2025
2025
baserun
Founder
CEO & Founder · San Francisco Bay Area · 2023 – 2024
2023
Cruise
Staff Product Designer · San Francisco Bay Area · 2020 – 2023
2020
Square
Senior Product Designer · San Francisco, California · 2015 – 2020
2015
Gray Area Foundation For The Arts
Teaching Assistant · San Francisco Bay Area · 2016 – 2017
2016
Samsung Electronics America
Interaction Design Intern · Greater New York City Area · 2015
2015
Samsung Electronics America
Interaction Design Intern · san jose, california · 2014
2014
THRE3D
Product Designer · Beijing · 2013
2013
Crystal Asia
Web Designer · Beijing · 2012
2012
Condé Nast
Freelance Illustrator · Beijing City, China · 2011 – 2012
2011
Beijing Design Week
Assistant Project Manager · Beijing City, China · 2011
2011
Mobitide Technology Co,.Ltd
UI/UX intern · Beijing · 2011
2011

Building something new