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About
Christ Xu is a CTO at Rational who previously served as a Senior Software Engineer at Tencent and held roles as an ML Engineer at Jane Street and Software Engineer intern at OpenAI. He has a background in competitive mathematics and algorithm research.
CTO at RationalYC S26
Intro paths
Christ went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran Rational's batch and knows the company first-hand. YC profile ↗
In turn, Christ can intro founders to Rational's investors below.
Rational's investors · 4
Co-founders at Rational
Frequently asked questions
- Who is Christ Xu?
- Christ Xu is a CTO at Rational who previously served as a Senior Software Engineer at Tencent and held roles as an ML Engineer at Jane Street and Software Engineer intern at OpenAI. He has a background in competitive mathematics and algorithm research.
- Where does Christ Xu work?
- Christ Xu is CTO of Rational.
- What companies did Christ Xu found?
- Christ Xu founded Rational.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
University of Michigan mafia477
Also came through, then founded or led a company.
OpenAI mafia116
Also came through, then founded or led a company.
Humboldt-Universität zu Berlin mafia35
Also came through, then founded or led a company.
Tencent mafia25
Also came through, then founded or led a company.
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