Jairaj Sethi

Jairaj Sethi is a software engineer and the co-founder and chief technology officer of Substack. He oversees technology for the publishing platform after previously leading platform engineering at Kik.

Career

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Based in: Toronto
Elsewhere

Substack

Mar 2018 — Present

Co-founder and CTO

Co-founded Substack and serves as its chief technology officer.

Untether Labs

Jan 2024 — Present

Advisor

Homecoming

Feb 2021 — Present

Advisor

Kik

Former role

Head of Platform and Principal Developer

Led platform engineering and worked as a principal developer before founding Substack.

University of Waterloo

Bachelor's studies in mathematics

Profile name

Company name

Company name

Jairaj Sethi

Substack

Untether Labs

Homecoming

Kik

University of Waterloo

Y Combinator

Products & media

Substack vs. the giants

Curated Lists

List Inclusions