# Hercy Chang

> Hercy Chang, known in Chinese as Zhang Yunhao, is the co-founder and CEO of LeetCode. A University of Arizona computer science graduate and developer since age 13, he helped develop the platform and established its Chinese operation in 2018. His work connects programmer learning with technical assessment and hiring.

- **Role:** Co-founder and CEO at LeetCode
- **Organizations:** LeetCode, LeetCode China / 力扣, 领扣网络（上海）有限公司
- **Education:** Bachelor’s degree in Computer Science, University of Arizona
- **Known for:** Helped develop LeetCode as its co-founder and CEO., Established the Chinese operation in 2018., Selected for Cyzone’s 2022 list of 30 entrepreneurs under 30.

## Career timeline

- **Age 13** — Began developing software; later worked across web, cloud and mobile applications.
- **2017** — Joined LeetCode and worked on product development; multiple interviews place his operational involvement in this year.
- **2018** — Established LeetCode China under the Chinese brand 力扣.
- **2020** — LeetCode expanded enterprise services in China; Chang was listed as a QCon Beijing speaker.
- **2021** — Participated in Tencent’s third SaaS accelerator cohort; LeetCode announced nearly $10 million in Series A financing in December.
- **2022** — Recognized by Cyzone and Hurun in their under-30 entrepreneur selections.

## Achievements

- Helped develop LeetCode as its co-founder and CEO.
- Established the Chinese operation in 2018.
- Selected for Cyzone’s 2022 list of 30 entrepreneurs under 30.
- Featured in Hurun’s 2022 China Under30s recognition.

## Latest updates

- **2022-12** — Hurun’s 2022 China Under30s announcement featured Zhang Yunhao and his work at LeetCode.

## Links

- LinkedIn: https://www.linkedin.com/in/hercy
- Twitter/X: https://x.com/hercychang

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Profile page: https://yespress.io/hercy-chang
Published by YesPress — https://yespress.io
Last updated: 2026-10-25