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Rational

First Zero-human Accounting Firm

San Francisco

2 employees

Operations

Seed

Website X / Twitter

About Rational

First Zero-human Accounting Firm

Open positions (4)

Software Engineering Intern

San Francisco, CA

StandoutYBacked by Y Combinator · P26

“LeBron has an agent. Why don’t you?”

— Now you have one too.

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Standout.

© 2026 Standout Work, Inc. All rights reserved.

Forward-Deployed Engineer

Full-time

San Francisco, CA

$120k – $200k

0.5% - 2% equity

Applied AI

San Francisco, CA

$120k – $200k

0.5% - 2% equity

Machine Learning Researcher

San Francisco, CA

$150k – $200k

0.5% - 2% equity

Company details

Team Size2

LocationSan Francisco

IndustryOperations

Funding

Last stage

Seed

Investors

Y Combinator

Founders

Jibril Moinuddin

CEO at Rational. Previously founding engineer at Buckeye AI, TrueFoundry. Founded STEMplicity Education. Dropped out of University of Michigan. Non-Trivial Fellow.

Christ Xu

CTO at Rational. Previously exited for $400K and youngest Senior SWE at Tencent. Jane Street ML Engineer and OpenAI SWE intern. 2x IOI Camp, IMO Camp, published algorithm researcher.

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.