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Joshua Posamentier

Investor

Managing Partner at Congruent Ventures · Investment Advisory Council at Prime Impact Fund · Board director at Lydian · Board director at Parallel Systems · Board director at Energetic Insurance

San Francisco Bay Area

Writes $100K – $5M checks · typically $1M

Find your path to Joshua

722 people in our graph share verified history with Joshua — schools, employers, funds. One of them is your warm intro.

Anthony LinunlockedJoshua: together at University of California, Berkeley (1995–1996)
×4Joshua: together at University of California, Berkeley
×2Joshua: together at University of California, Berkeley, Haas School of Business
Joshua: together at Columbia Business School

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.

Contact· self-published, not guessed

Invests in

Climate TechDeep TechEnergyHardwareMobility & TransportationSaaS

Board director at Lydian

Intro paths

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In turn, Joshua can intro founders to Lydian's investors below.

Lydian's investors · 8

Breakthrough Energy VenturesBoston · $500K – $50M checks · since 2026Congruent VenturesSan Francisco · $100K – $5M checks · since 2026Galvanize Climate SolutionsSan Francisco · since 2023Global Founders CapitalBerlin · $637K – $32M checks · since 2023Overlap HoldingsHicksville · since 2023Overture ClimateSanta Monica · $1M – $3M checks · since 2023Union Square Ventures (USV)New York City · $1M – $8M checks · since 2023Voyager PartnersSan Francisco · $500K – $5M checks

Co-founders at Lydian

JRJoe Rodden
Joe RoddenFounder

Board director at Parallel Systems

Intro paths

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In turn, Joshua can intro founders to Parallel Systems's investors below.

Parallel Systems's investors · 5

Anthos CapitalSanta Monica · $500K – $10M checks · since 2020Collaborative FundNew York · $500K – $1M checks · since 2020Congruent VenturesSan Francisco · $100K – $5M checks · since 2020Embark VenturesLos Angeles · since 2020Riot VenturesVenice · $3M checks · since 2020

Co-founders at Parallel Systems

JH
John HowardExecutive Officer, Director
BSBenjamin Stabler
Benjamin StablerFounder
MSMatt Soule
Matt SouleFounder

Board director at Energetic Insurance

Intro paths

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In turn, Joshua can intro founders to Energetic Insurance's investors below.

Energetic Insurance's investors · 6

Clocktower VenturesSanta Monica · $100K – $20M checksCongruent VenturesSan Francisco · $100K – $5M checks · since 2021Greensoil PropTech VenturesToronto · since 2024MS&AD VenturesMenlo Park · $500K – $3M checks · since 2024Muus Climate PartnersNew York · since 2024SE VenturesMenlo Park · since 2024

Co-founders at Energetic Insurance

JB
James BowenExecutive Officer, Director, Promoter
JM
Jeffrey McAulayExecutive Officer, Director, Promoter

Experience

  1. Congruent VenturesCo-Founder and Managing Partnercurrent2016 — presentSan Francisco Bay Area
  2. Bright HarborInvestorcurrent2025 — present
  3. First StreetInvestorcurrent2024 — presentNew York, United States
  4. Bonsai RoboticsInvestorcurrent2023 — presentSan Jose, California, United States
  5. LydianBoard Directorcurrent2022 — presentBoston, Massachusetts, United States
  6. Muon SpaceBoard Directorcurrent2021 — presentMenlo Park, California, United States
  7. Applied CarbonBoard Directorcurrent2021 — present
  8. Planet FWDBoard Membercurrent2024 — present
  9. Pico MESBoard Membercurrent2020 — presentSan Francisco Bay Area
  10. AuX LabsBoard Membercurrent2024 — present
  11. Avalanche EnergyInvestorcurrent2021 — presentSeattle, Washington, United States
  12. Parallel SystemsBoard Membercurrent2020 — presentLos Angeles Metropolitan Area
  13. Rendered.AIInvestorcurrent2019 — presentGreater Seattle Area
  14. ClearPathAdvisorcurrent2026 — presentWashington, United States
  15. ActivateAdvisor and Leadership Councilcurrent2015 — presentBerkeley, CA
  16. polySpectraBoard Observercurrent2017 — presentBerkeley, CA
  17. Prime Impact FundInvestment Advisory Councilcurrent2018 — presentGreater Boston
  18. Energetic InsuranceBoard Membercurrent2017 — present
  19. Pivot BioInvestorcurrent2016 — present
  20. Sense Labs IncInvestorcurrent2015 — present
  21. Ripple FoodsInvestorcurrent2015 — presentEmeryville, CA
  22. QuantumScapeInvestorcurrent2013 — presentSanta Clara, California, United States
  23. TroveInvestorcurrent2013 — presentSan Francisco Bay Area
  24. Alloy Enterprises IncBoard Member2021 — 2026Somerville, Massachusetts, United States
  25. National Interscholastic Cycling Association (NICA)NICA Mountain Bike Coach (Volunteer)2020 — 2026Northern California
  26. Fox RoboticsInvestor2018 — 2026
  27. Meati FoodsInvestor2019 — 2025Boulder, CO
  28. Clean Energy TrustInvestment Committee Member2016 — 2025Greater Chicago Area
  29. Natron Energy (formerly Alveo Energy)Advisor and Investor2015 — 2025Santa Clara, CA
  30. PetraFormer Board Member, Investor2018 — 2024San Francisco Bay Area
  31. Bellwether CoffeeBoard Member2018 — 2023Berkeley, CA
  32. TeleSenseBoard Observer2018 — 2022Sunnyvale, CA
  33. Sense PhotonicsBoard Member2017 — 2022Raleigh-Durham-Chapel Hill Area
  34. Acceptto CorporationAdvisor2014 — 2021Hillsboro, OR
  35. Heliotrope Technologies, Inc.Board Member2013 — 2017Berkeley, CA
  36. Prelude VenturesPrincipal Partner2012 — 2017San Francisco
  37. SolarBridge TechnologiesInvestor2012 — 2015Austin, Texas Metropolitan Area
  38. Texas Instruments (Formerly National Semiconductor)Director of Strategy and New Product Development2008 — 2012Santa Clara, CA
  39. National SemiconductorDirector of Energy Storage and Smart Grid Groups2009 — 2011
  40. Blipstream, IncCo-Founder & Founding CEO2007 — 2009Oakland

Skills & more

Strategy DevelopmentStrategic Planning7Strategy81Leadership6Management6Business Creation2Semiconductors34Mobile1EntrepreneurCorporate Development5Product Development36Start-ups99
+12 moreProduct ManagementBusiness StrategyProduct MarketingWirelessEntrepreneurshipProduct StrategyCross-functional Team LeadershipVenture CapitalMergersMarketing StrategyNew Business DevelopmentSaaS

Languages C · English · MySQL · PHP · Python · x86 ASM

From Joshua's professional profile.

Deals · 3

Pico MESBoard seat

via Congruent Ventures · filed Jun 2023 · $11.4M raise

EmergyBoard seat

via Congruent Ventures · filed Aug 2022 · $175M raise

Energetic InsuranceBoard seat

via Congruent Ventures · filed Oct 2021 · $7M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Sources: SEC Form D filings · curated public sources.

Colleagues at Congruent Ventures

Abe Yokell
Managing Partner and Co-Founder at Congruent Ventures
Abraham Yokell
General Partner at Congruent Ventures
Austin Pringle
Analyst at Congruent Ventures
Divyansh Saksena
Analyst at Congruent Ventures
Eliza Cushman
Partner at Congruent Ventures
Gray Robinson
Partner at Congruent Ventures
Hilla Watkins
Platform Partner at Congruent Ventures
Hillá Watkins
Platform Partner at Congruent Ventures

Network1

Abe Yokell
Managing Partner and Co-Founder at Congruent Ventures

Investors connected to Joshua in public investor directories — a warm-intro map.

Frequently asked questions

Who is Joshua Posamentier?
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.
Where does Joshua Posamentier work?
Joshua Posamentier is Managing Partner at Congruent Ventures and Board director at Lydian and Board director at Parallel Systems and Board director at Energetic Insurance.
What does Joshua Posamentier invest in?
Joshua Posamentier invests in Climate Tech, Deep Tech, Energy, Hardware, Mobility & Transportation, SaaS.
What check size does Joshua Posamentier write?
Joshua Posamentier typically writes checks of $100K – $5M.
What boards does Joshua Posamentier sit on?
Joshua Posamentier holds tracked board seats at Alloy Enterprises, Bellwether, Emergy, Energetic Insurance, Ludwig Computing Inc., Lydian, Parallel Systems, Pico MES, Sense Photonics, VEIR.
What companies has Joshua Posamentier invested in?
Investments tracked here include Alloy Enterprises, Applied Carbon, Avalanche Energy, Bonsai Robotics, Bright Harbor, Ebb Carbon, Energetic Capital, Ezra, Fervo Energy, First Street, Fluxco, Lydian, and 15 more.
Where did Joshua Posamentier go to school?
Joshua Posamentier studied at Columbia Business School (MBA, Finance); University of California, Berkeley, Haas School of Business (MBA, Venture Finance); University of California, Berkeley (BA, Physics with Honors).

Same school

Shared employers