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Deffai
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Building the future of biotech by anticipating FDA approval probability1-10 Employees
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Deffai careers

Building the future of biotech by anticipating FDA approval probability
Headquartered in San Francisco, Deffai is an AI-native VC-backed seed-stage startup building an AI platform for simulating FDA regulatory intelligence, built together with former FDA reviewers. We help therapeutics companies and their investors anticipate regulatory outcomes.

We are ambitious builders with diverse technical backgrounds building vertical AI solutions in a deeply regulated space. Work closely with former FDA decision-makers to redefine the future of biotech approvals.

Backed by top-tier tech investors in the SF Bay Area, with advisors from GitHub, OpenAI, and Mercor.

Are you an ambitious builder who wants to do more and push the boundary of what's possible? Join our team!

Size of the opportunity: FDA accounts for 20% of the U.S. economy alone. Food, drug, and cosmetics. Beyond the U.S., other countries and regions including Canada, Europe, and Japan all have their own FDA with similar frameworks.

Senior Founding AI Software Engineer

Remote only • United States
$190k – $270k
yesterday
Liz Wang
Avatar for Liz Wang
Building AI for FDA drug approvals, 7+ years biotech industry, technical breadth across preclinical to commercial for drug commercialization.
Funded over

1 round

Latest round

Pre-Seed (Jan 2026)

Offers generous parental leave

Provides a post-parental leave return-to-work program

utilizes a full-time remote friendly model

Utilizes a flexible work schedule

Unlimited pto policy

+24 more