This profile has not been claimed and data may not be accurate.
Founder333
76th percentile
Investor34
72nd percentile
YC S2009Serial FounderUnicorn FounderRaised $200M+250+ EmployeesAngel Investor
Founder Matrix
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Credibility
this founder typical founder (50th pct)
Technical Depth · 98th percentile
- Currently shipping public code on GitHub, with the most recent push 44 days ago to the repo 'error'.
- Past founder of Mixpanel, which he co-founded in 2009 and led until 2019.
- Active GitHub builder with 30 public non-fork repositories.
- GitHub account @ttrefren is confirmed as Tim Trefren's, with his bio explicitly stating his founder roles.
- GitHub account @ttrefren has been active for approximately 17 years, created in January 2009.
Founder score
- 97%Probability of being accurate (97%)Past founder of Mixpanel, which he co-founded in 2009 and led until 2019.
- 97%Probability of being accurate (97%)Mixpanel was co-founded with Suhail Doshi, confirming a co-founder relationship.
- 97%Probability of being accurate (97%)GitHub account @ttrefren is confirmed as Tim Trefren's, with his bio explicitly stating his founder roles.
- 95%Probability of being accurate (95%)Mixpanel raised $277M in total venture funding across five rounds, including a $200M Series C.
- 95%Probability of being accurate (95%)Current founder and co-founder of Recheck, a consumer-protection data platform for the residential solar market, founded in 2023.
- 95%Probability of being accurate (95%)GitHub account @ttrefren has been active for approximately 17 years, created in January 2009.
- 92%Probability of being accurate (92%)Y Combinator S2009 alum — Mixpanel was backed by YC in the Summer 2009 batch.
- 92%Probability of being accurate (92%)Active GitHub builder with 30 public non-fork repositories.
- 90%Probability of being accurate (90%)Currently shipping public code on GitHub, with the most recent push 44 days ago to the repo 'error'.
Investor score
- 88%Probability of being accurate (88%)Publicly identified as an angel investor in early-stage startups, with named investments including Second Measure, Ovipost, PanaSea, Releaf, Saratoga Energy, PanaData, Trieve, and Tidelift.
- 78%Probability of being accurate (78%)Has made at least 8 confirmed angel investments across companies including Trieve, Tidelift, Second Measure, and others.
- 70%Probability of being accurate (70%)Portfolio company Tidelift was acquired, representing a portfolio exit for Tim as an angel investor.
- 60%Probability of being accurate (60%)Approximately 6 years of investing experience, with angel activity documented from around 2019 onward.
What you likely need
Tim is a serial founder with deep product analytics expertise, a unicorn-scale exit from Mixpanel, and a current early-stage climate-tech venture in Recheck. His strongest near-term opportunity is raising a seed or Series A for Recheck, leveraging his YC network and Mixpanel credibility. As an active angel, he could also formalize his climate-tech investing thesis into a small syndicate or fund.
Are these your current priorities?
We will tune and customize your Founder Festival experience to make sure you get invited to the events that would be most valuable to you.
- fundraisingLeverage your Mixpanel track record and YC S2009 network to close a formal seed round for Recheck — your $277M raise history and unicorn-founder status make you a compelling lead for climate-focused VCs.
- introsTap the YC alumni network for warm introductions to climate-tech investors and potential Recheck enterprise customers in the solar industry.
- fundraisingConsider formalizing your climate, food-security, and economic-development angel investments into a named syndicate on AngelList to attract co-investors and increase deal flow.
- hiringWith only 5 employees, prioritize hiring a second technical co-founder or senior engineer at Recheck to accelerate the data infrastructure build-out.
- positioningPublish a public data report on residential solar fraud trends using Recheck's dataset to establish thought leadership and generate inbound from solar industry players.
- tacticalOpen-source a utility or dataset from Recheck's solar-data work on GitHub to build developer credibility and attract technical talent to the company.
- positioningProactively share the Mixpanel-to-Recheck founder story in climate-tech media to position Recheck as the credible, mission-driven choice for solar industry data partnerships.