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Builders & open source

Sasha Sheng

Founder and COO, TypeSafe AI

Sasha Sheng is a founder and the COO of TypeSafe AI, a San Francisco company that builds System One models returning typed, probabilistic decisions for software automation. TypeSafe's team page describes Sheng as a former research engineer at Meta and FAIR, where Sheng worked on News Feed, AI experiences and AI research, and notes published work at NeurIPS and ECCV.12

At a glance

Current role
Founder and COO
Sector
Company
Work listed
1
Sources cited
2
Profile reviewed

Career

Before TypeSafe, Sheng was a research engineer at Meta and its FAIR research group, working across News Feed, AI experiences and AI research, and published work at the NeurIPS and ECCV conferences. TypeSafe's team page lists Sheng among the company's three founders, as COO, alongside CEO Diogo Almeida and CTO Erik Gafni.1

TypeSafe came out of two years in stealth in September 2026 with Jev, a model that answers typed questions about supplied input with structured values and probabilities.2

Work and contributions

  • TypeSafe AI System One models (Jev) Proprietary product

    Part of TypeSafe's founding team as COO when the company launched its first System One model, Jev, in early access in September 2026.12

Timeline

  1. TypeSafe AI, where Sheng is a founder and COO, launched its first System One model, Jev.21

Other documented roles

Roles the sources document that are not confirmed as current.

  • Research engineer working on News Feed, AI experiences and AI research (past), Meta (FAIR)1

Where they work

Suggest a correction or removal

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References

2 sources · profile reviewed Oct 22, 2026 · data updated Oct 22, 2026

  1. Team — TypeSafe AITypeSafe AI · Official page · accessed Oct 22, 2026
  2. Introducing System One Models & Jev — TypeSafe AI BlogTypeSafe AI · Announcement · published Sep 15, 2026 · accessed Oct 22, 2026