Joshua Posamentier
InvestorManaging Partner at Congruent Ventures
San Francisco Bay Area
Writes $100K β $5M checks Β· typically $1M
About
Joshua Posamentier combines deep semiconductor and wireless-chip engineering, 50+ patents, a UC Berkeley physics degree and dual Columbia/Haas MBAs, focusing on engineering risk in climate hardware rather than subsidy-reliant models.
Joshua Posamentier @posamentier
#228 How to Invest in ClimateTech in 2025 like a Day 1 Investor w/ Joshua Posamentier (Congruent Ventures), by @SilasMahner @congruentvc https://t.co/kGc0skYCCU
Jan 7, 2025 Β· β₯ 15
Joshua Posamentier @posamentier
Migrating to π¦. Iβll miss energy twitter but the signal to noise here isnβt worth it anymore. Same username everywhere. Come find me.
Nov 17, 2024 Β· β₯ 23
Joshua Posamentier @posamentier
Those crit racers are so fast they ripped the signs right out! https://t.co/izWsHbYID1
Nov 5, 2024 Β· β₯ 1 Β· β 1
Invests in
Climate TechDeep TechEnergyHardwareMobility & TransportationSaaS
Experience
- Congruent VenturesCo-Founder and Managing Partnercurrent2016 β presentSan Francisco Bay Area
- Bright HarborInvestorcurrent2025 β present
- First StreetInvestorcurrent2024 β presentNew York, United States
- Bonsai RoboticsInvestorcurrent2023 β presentSan Jose, California, United States
- LydianBoard Directorcurrent2022 β presentBoston, Massachusetts, United States
- Muon SpaceBoard Directorcurrent2021 β presentMenlo Park, California, United States
- Applied CarbonBoard Directorcurrent2021 β present
- Planet FWDBoard Membercurrent2024 β present
- Pico MESBoard Membercurrent2020 β presentSan Francisco Bay Area
- AuX LabsBoard Membercurrent2024 β present
- Avalanche EnergyInvestorcurrent2021 β presentSeattle, Washington, United States
- Parallel SystemsBoard Membercurrent2020 β presentLos Angeles Metropolitan Area
- Rendered.AIInvestorcurrent2019 β presentGreater Seattle Area
- ClearPathAdvisorcurrent2026 β presentWashington, United States
- ActivateAdvisor and Leadership Councilcurrent2015 β presentBerkeley, CA
- polySpectraBoard Observercurrent2017 β presentBerkeley, CA
- Prime Impact FundInvestment Advisory Councilcurrent2018 β presentGreater Boston
- Energetic InsuranceBoard Membercurrent2017 β present
- Pivot BioInvestorcurrent2016 β present
- Sense Labs IncInvestorcurrent2015 β present
Education
- Columbia Business SchoolMBA, Finance2005 β 2007
- University of California, Berkeley, Haas School of BusinessMBA, Venture Finance2006 β 2007
- University of California, BerkeleyBA, Physics with Honors1995 β 1997
- Texas Academy of Mathematics and Science
Skills & more
+12 more
Product ManagementBusiness StrategyProduct MarketingWirelessEntrepreneurshipProduct StrategyCross-functional Team LeadershipVenture CapitalMergersMarketing StrategyNew Business DevelopmentSaaSLanguages C Β· English Β· MySQL Β· PHP Β· Python Β· x86 ASM
From Joshua's professional profile.
Same school
Also attended Columbia Business School576
+ 570 more
Also attended University of California, Berkeley, Haas School of Business489
+ 483 more
Also attended University of California, Berkeley863
+ 857 more
Also attended Texas Academy of Mathematics and Science2
Shared employers
Also worked at First Street2
Also worked at Applied Carbon11
+ 5 more
Also worked at Meati Foods1
Also worked at Clean Energy Trust14
+ 8 more
Deals Β· 3
Pico MESBoard seat
via Congruent Ventures Β· filed Jun 2023 Β· $11.4M raise
EmergyBoard seat
via Congruent Ventures Β· filed Aug 2022 Β· $175M raise
Energetic InsuranceBoard seat
via Congruent Ventures Β· filed Oct 2021 Β· $7M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Congruent Ventures
Network1
Investors connected to Joshua in public investor directories β a warm-intro map.













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