Daniel Ahmadizadeh

2x YC CEO + Crustdata + Start With One

Brooklyn, New York, United States

About

Over the past decade, I’ve led two Y Combinator-backed companies as CEO, served as a founder coach, fractional CEO, COO, angel investor, and held a residency at TED. I'm now growing Crustdata, a Y Combinator startup. In the past 15 months we've grown the business from $600k to $9.2M in ARR (as of May 20, 2026). Additionally, I teach entrepreneurship courses at Stanford University, Columbia University, and D.Y. Patil Business School, where I’m helping shape the next generation of entrepreneurs. My framework, Start With One, is transforming how entrepreneurship is taught and measured globally. Every Saturday at 10am ET, I host a free Start With One office hour via Zoom.

Experience

  • Growth - Realtime People and Company Data via APIs at Crustdata (YC F24)
    Jan 2025 - Present · 1 yr 6 mos

    Y Combinator backed startup. $600k to $9.2m ARR growth since February 2025

  • Course Instructor, Entrepreneurship & Innovation at Columbia University
    May 2023 - Present · 3 yrs 2 mos

    I teach entrepreneurship at Columbia University — Entrepreneurship & Innovation: Changing the World Through Venture Creation. Students go from idea to launched venture: identifying a real problem, customer discovery, building a first prototype, go-to-market, and fundraising. The course is built on my Start With One framework — solving a real problem for one real person as the microcosm of an entire market — and on my experience as a 2x Y Combinator CEO. Every student finishes at Demo Day, telling the story of a specific person whose problem they solved. I've taught 500+ founders across my courses to build more practical, human-centered companies.

  • Course Instructor, Innovation & Entrepreneurship at Stanford University
    May 2024 - Present · 2 yrs 2 mos

    I teach a multiple two-week Innovation & Entrepreneurship courses each summer in Stanford University's Pre-Collegiate Studies program. Students learn the fundamentals of entrepreneurship and venture creation — generating and validating ideas, customer discovery, building a prototype, and pitching at a final Demo Day — through my Start With One framework.

  • Start With One | Founder Coach, Fractional Founder, and Building Projects at Marathon Laps
    Jan 2021 - Present · 5 yrs 6 mos

    At Marathon Laps, we specialize in working exclusively with Y Combinator-backed startups. Our dedicated team collaborates closely with founders to change their company's trajectory using our unique Start With One framework. We take on roles as founder coaches, fractional CEOs, interim COOs, Chief of Staffs, and board members. We've partnered with companies such as Haystack Analytics, AngleHealth, Motion, Compound, Odys Aviation, Unthread, Narrator, Eduflow, Pipekit, SuperTokens, and Krokit, among others. We take pride in having contributed to their significant milestones, including achieving profitability, securing funding rounds, and enhancing overall founder effectiveness. Additionally, we build our own tools. Currently we are building Time, a personalized system for heart attack prevention, as well as Circles, an accountability platform for tech founders to reach their goals. https://time1s.com/ https://www.joincircles.so/

  • Partner at Orange Collective
    May 2023 - Present · 3 yrs 2 mos