Christ Xu

CTO @ Rational (YC S26) | First Zero-human Accounting Firm

Co-founder

2026Co-founder· Rational

Founder · since 2026

Company

Rational

Role

Co-Founder

current

Stage

—

no public source

Raised

—

no public source

Based

—

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

Profile coverage5 of 7 · missing posts, contact

Rational

AI Employees for Accounting

Experience

Career

Rational
Co-founder
Co-Founder · 2026 – Present
2026
OpenAI
Software Engineering Intern · Metropolregion San Francisco Bay Area · 2026 – Present
2026
Tencent
Software Engineer · 2026
2026
Tencent
Software Engineer · 2026
2026
Jane Street
IN:FOCUS 2026 · New York, Vereinigte Staaten von Amerika · 2026
2026
University of Michigan
Research Assistant · 2025
2025

CTO at Rational. Tencent SWE, Jane Street ML Engineer, OpenAI SWE. 2x IOI Camp, IMO Camp, published algo researcher.