This profile has not been claimed and data may not be accurate.
Founder64Current founder
76th percentile
Investor34Current investor
75th percentile
Combined
Mixpanel co-founder turned angel now building Recheck for solar data
Credibility
this founder typical founder (50th pct)
Technical Depth · 82th 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.
Relationship Matrix
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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
You'd get the most out of Festival events that put you in the room with climate-focused VCs and YC alumni who can accelerate Recheck's seed round and open doors to solar enterprise customers. Roundtables and dinners built around data infrastructure, climate-tech founder stories, and angel syndicate formation would let you leverage your Mixpanel credibility in exactly the right rooms. Hiring and thought-leadership events tied to the solar-data and open-source developer communities would also move the needle fast given Recheck's current stage.
Would you attend these IRL Festival events?
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.
- fundraisingA YC S2009 alumni dinner with climate-focused seed and Series A investors to leverage your Mixpanel unicorn track record and open warm conversations around Recheck's raise
- fundraisingA small roundtable of 8–10 climate-tech VCs (Congruent, Breakthrough Energy Ventures, Prelude) where Recheck's solar-fraud data infrastructure is the anchor pitch conversation
- introsA YC alumni happy hour specifically for founders and operators with enterprise solar or clean-energy customer relationships, designed to surface warm intros to Recheck's first major industry data partners
- tacticalA dinner for active angels formalizing climate, food-security, and economic-development theses into named AngelList syndicates, with operators who've already run sub-$10M rolling funds sharing mechanics and deal-flow strategies
- positioningA roundtable of climate-tech founders and energy journalists where you workshop Recheck's residential solar fraud dataset into a public report and media narrative that drives inbound from solar industry players
- positioningA founder storytelling dinner with climate-tech media and podcast hosts where Mixpanel-to-Recheck pivots and mission-driven B2B data company narratives are the explicit topic, positioning you for a high-profile feature
- hiringA hiring-focused happy hour for early-stage climate and data-infrastructure startups looking to recruit senior engineers and technical co-founders, anchored by founders at the 3–8 employee stage who are building out core data pipelines
- tacticalA developer-community meetup for founders open-sourcing utilities and datasets from climate or energy-data projects on GitHub, where you can soft-launch Recheck's solar-data tooling and attract technical talent in the room