- Zheda math and programming prodigy joins newly formed Harness team
- Move comes as DeepSeek seeks fresh funding at a reported $45 billion valuation
A former Jane Street quantitative researcher and Zhejiang University programming champion has joined DeepSeek, adding to the Chinese AI startup’s growing push into coding agents as it races to expand beyond foundation models.
Cui Tianyi (崔添翼), a former co-founder of quant trading firm TSY Capital, joined DeepSeek’s newly formed Harness team in March, according to his LinkedIn profile. Tide News, citing a person close to DeepSeek, confirmed the appointment.
DeepSeek has been building an internal team focused on code agents under the “Harness” project, a system benchmarked against Anthropic’s Claude Code. The company has already opened Beijing-based hiring for product managers and research engineers tied to the initiative.
Cui is regarded as a standout figure from China’s competitive programming and quantitative trading circles.
In 2008, he secured admission to Zhejiang University’s computer science program after winning bronze in China’s National Olympiad in Informatics. During his university years, he won six ACM International Collegiate Programming Contest Asia regional gold medals, becoming known as one of the “programming prodigies” from Zheda, the shorthand for Zhejiang University.
After graduating in 2013, Cui joined Jane Street’s Hong Kong office, where he spent nine years before co-founding TSY Capital in 2022. He left the firm in February and joined DeepSeek roughly a month later.
The move also reconnects two Zhejiang University alumni from China’s quant finance world. DeepSeek founder Liang Wenfeng studied information and communication engineering at the university before founding the AI startup.
The hiring comes as DeepSeek enters the final stages of a major fundraising round. The company is reportedly seeking as much as 50 billion yuan ($7.36 billion) at a pre-money valuation of about $45 billion, a deal that could become the largest first-round financing ever for a Chinese technology startup.
Part of the new capital is expected to be used to retain core researchers and recruit more top-tier AI talent as competition intensifies in coding agents and developer tools.
