Jibril Moinuddin is Co-Founder and CEO of Rational, a Y Combinator-backed startup building AI employees for accounting firms, tackling one of the industry's most critical talent shortages.

Jibril dropped out of the University of Michigan's Computer Science program and previously founded STEMplicity Education, an edtech venture focused on accessible college and career prep.

As a Non-Trivial Fellow and serial founder, Jibril believes AI should go far beyond chatbots and research tools, acting as true end-to-end coworkers within professional services firms.

At just 19, Jibril co-founded Rational with Christ Xu and secured a spot in Y Combinator's S26 batch, positioning the company at the forefront of AI-driven accounting automation.

Rational's AI employees are live with major partners, integrating into firms' existing stacks via Slack and Teams to handle bookkeeping, AP/AR, month-end close, and tax prep with full human oversight.