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James Sinclair

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Website

https://startuptoscaleup.com/

Member Since

January 2025

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James Sinclair is the founder’s founder. A serial entrepreneur with multiple exits who thrives in the chaos of early-stage startups. Where ideas are half-formed, and nothing is certain, James is the guy they call to help founders battle through the messy middle, uncover the real potential, and transform ideas into something customers actually want to buy.

He’s guided ventures through Y Combinator and TechStars, worked with founders from Uber, Intel, and Meta, and built a reputation as the go-to strategist for turning dreams into viable, market-ready businesses. His weekly newsletter reaches 140,000 founders, who read his candid, actionable insights to navigate the brutal realities of starting a startup.

James has led innovation projects acros ...more

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James Sinclair’s books

Average rating: 4.56 · 18 ratings · 2 reviews · 1 distinct work • Similar authors

Starting a StartUp: Build Something People Want

4.56 avg rating — 18 ratings — 3 editions

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James liked Graeme Williams's review of Starting a StartUp: Build Something People Want: "Starting a StartUp: Build Something People Want is a refreshingly no-nonsense guide that cuts straight to the truth most first-time founders learn too late and too expensively. James Sinclair brings two decades of real startup experience, including m" Read more of this review »
Apr 25, 2026 02:08AM · see review
James rated a book it was amazing Starting a StartUp: Build Something People Want by James Sinclair (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Jan 13, 2026 01:11PM · like
James liked Michael Kamaloski's review of Starting a StartUp: Build Something People Want:
Dec 05, 2025 10:13PM · see review
James finished reading Starting a StartUp: Build Something People Want by James Sinclair (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Oct 14, 2025 11:12PM · like
James made a comment in the group Goodreads Librarians Group — Duplicate Books (Identical Formats) topic " Thank you, the duplicate seems to now link to the original. Appreciated. "
Oct 03, 2025 09:08PM
James rated a book it was amazing Starting a StartUp: Build Something People Want by James Sinclair (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Oct 02, 2025 03:23AM · like
James made a comment in the group Goodreads Librarians Group — Duplicate Books (Identical Formats) topic " As the author i claimed my book and also went through the process as "James Sinclair" to be separated from the master list of books by any James Sincl ...more "
Sep 30, 2025 08:41PM
James joined the group Goodreads Librarians Group
Sep 30, 2025 08:37PM · like