Daniel Ahmadizadeh's website. Brooklyn-based startup founder and teacher.

Hi, I’m Daniel - I’m currently building Time, a personalized system for heart attack prevention.

Over the last 10+ years I've been the CEO of two Y Combinator backed startups, helped other startups at risk of shutting down find a way to change their trajectory as their founder coach, fractional CEO, and angel investor. I also teach entrepreneurship at Columbia University and Stanford University.

I have helped lead three companies to over a million in annual recurring revenue, and my work has been recognized in major publications like WSJ, The Today Show, and NPR. I’m lucky to have been invited to speak on startups at Harvard, Princeton, and TED.

My framework, Start With One, focuses on solving a problem first for one person, as one person can be the microcosm of an entire market. It shifts entrepreneurship from idea-led to problem-led, transforming theoretical personas into actual human beings. Start With One helps founders move from the brink of shutdown to product-market fit. See testimonials from students, founders, and parents here.

When I’m not working on startups, I love running and spending time with my family. Here are some of my values and a preview of the book I’ll publish next year. Feel free to add comments to it directly!