David Aronoff
InvestorGeneral Partner at Flybridge Capital Partners · Board director at Valimail · Board director at Nsone · Board director at BitSight Technologies
Boston, Massachusetts
Writes $100K – $10M checks · typically $1M
About
David Aronoff is Chairman and Managing Partner at MCJ, an early-stage climate technology venture capital firm that has invested in over 116 startups since its formation in late 2020. With more than three decades of venture capital experience, he previously held General Partner positions at Flybridge and Greylock, focusing on cloud infrastructure, semiconductors, and cybersecurity, and earlier held senior roles at Chipcom and Bell Laboratories. Aronoff holds a BS in Computer Science from the University of Vermont, an MS in Computer Engineering from the University of Southern California, and an MBA from Harvard Business School, and serves on multiple corporate and nonprofit boards.
Invests in
AgTechClimate TechCybersecurityDeep TechEnergyEnterprise SoftwareFoodTechHardwareIoTMobility & TransportationSaaS
Board director at Valimail
Intro paths
In turn, David can intro founders to Valimail's investors below.
Valimail's investors · 5
Co-founders at Valimail
Board director at Nsone
Intro paths
In turn, David can intro founders to Nsone's investors below.
Nsone's investors · 1
Co-founders at Nsone
Board director at BitSight Technologies
Intro paths
In turn, David can intro founders to BitSight Technologies's investors below.
BitSight Technologies's investors · 14
Co-founders at BitSight Technologies
Experience
- MCJChairman and Managing Partnercurrent2020 — presentBoston, Massachusetts, United States
- DraperDirector Board Of Directorscurrent2015 — presentCambridge, MA
- Aliro Quantum TechnologiesBoard Membercurrent2019 — presentCambridge, Massachusetts, United States
- BitSightBoard Membercurrent2011 — presentBoston
- University of VermontUniversity of Vermont School of Business Administrationcurrent2011 — presentAdvisory Board
- MinimBoard Member, Investor, Co-Founder2018 — 2023Manchester, New Hampshire
- BetterCloudBoard Member2012 — 2022NYC
- Flybridge Capital PartnersGeneral Partner2005 — 2019
- ApiaryMember Board of Directors2013 — 2017San Francisco, CA
- Immedia SemiconductorBoard of Directors2009 — 2017Boston, MA
- Sand9Board of Directors2008 — 2015Cambridge, MA
- Calxeda, Inc.Member, Board of Directors2010 — 2014Austin, TX
- JouleXInvestor2011 — 2013Atlanta, GA / Kassel, Germany
- CrashlyticsBoard Member and Lead Investor2011 — 2013Greater Boston Area
- BlackwaveBoard Member2006 — 2011
- CHiL SemiconductorBoard Member2006 — 2011Andover, MA
- VidSysBoard Member2005 — 2011
- MobivoxBoard Member2007 — 2010Montreal, Canada
- SandburstBoard Member2000 — 2006Andover, MA
- Mazu NetworksBoard Member2000 — 2006Cambridge, MA
- Ounce LabsBoard Member2003 — 2005Waltham, MA
- T NetworksBoard Member2000 — 2005
- Greylock PartnersGeneral Partner1996 — 2005Boston, MA
- eDialBoard Member1998 — 2004
- IkanosBoard Member2000 — 2003Fremont, CA
- EmperativeBoard Member1998 — 2003
- AkaraBoard Member1999 — 2003Ottawa, Canada
- AllayerBoard Observer1999 — 2000Fremont, CA
- SiteraBoard Observer1998 — 2000Longmont, CO
- XrosBoard Observer1999 — 2000Fremont, CA
- XediaBoard Observer1997 — 1999Acton, MA
- CimaronBoard Member1998 — 1999Andover, MA
- HappyPuppy.comCo-founder & VP Business Development1994 — 1996Boston, MA / Naples, FL
- Chipcom CorporationEngineering Manager & Principal Engineer1989 — 1995
- AT&T Bell LabsMember of Technical Staff1986 — 1989
Skills & more
+8 more
Board of DirectorsInformation TechnologyMergers & Acquisitions (M&A)Strategic PartnershipsStrategySaaSSoftware as a Service (SaaS)ESGFrom David's professional profile.
Deals · 6
DaisyChain EnergyBoard seat
via Flybridge Capital Partners · filed May 2026 · $6.7M raise
FiEEBoard seat
via Flybridge Capital Partners · filed Dec 2020 · $25.3M raise
BetterCloudBoard seat
via Flybridge Capital Partners · filed May 2020 · $75M raise
BitSight TechnologiesBoard seat
via Flybridge Capital Partners · filed Jul 2018 · $60M raise
ValimailBoard seat
via Flybridge Capital Partners · filed Nov 2016 · $12M raise
NsoneBoard seat
via Flybridge Capital Partners · filed Apr 2015 · $5.8M raise
Attribution from SEC filings, press coverage, and firm rosters.
Other disclosed investments
Board seats
Per SEC Form D filings.
Colleagues at Flybridge Capital Partners
Network10
Investors connected to David in public investor directories — a warm-intro map.
Frequently asked questions
- Who is David Aronoff?
- David Aronoff is Chairman and Managing Partner at MCJ, an early-stage climate technology venture capital firm that has invested in over 116 startups since its formation in late 2020. With more than three decades of venture capital experience, he previously held General Partner positions at Flybridge and Greylock, focusing on cloud infrastructure, semiconductors, and cybersecurity, and earlier held senior roles at Chipcom and Bell Laboratories. Aronoff holds a BS in Computer Science from the University of Vermont, an MS in Computer Engineering from the University of Southern California, and an MBA from Harvard Business School, and serves on multiple corporate and nonprofit boards.
- Where does David Aronoff work?
- David Aronoff is General Partner at Flybridge Capital Partners and Board director at Valimail and Board director at Nsone and Board director at BitSight Technologies.
- What does David Aronoff invest in?
- David Aronoff invests in AgTech, Climate Tech, Cybersecurity, Deep Tech, Energy, Enterprise Software, FoodTech, Hardware, IoT, Mobility & Transportation, SaaS.
- What check size does David Aronoff write?
- David Aronoff typically writes checks of $100K – $10M.
- What boards does David Aronoff sit on?
- David Aronoff holds tracked board seats at BetterCloud, BitSight Technologies, DaisyChain Energy, FiEE, NetBox, Nsone, Valimail.
- Where did David Aronoff go to school?
- David Aronoff studied at Harvard Business School (MBA); University of Southern California (MS, Computer Engineering); University of Vermont (BS, Computer Science).
Are you in our directory? — or find your own page and tap it there to see your paths to every investor.
Same school
Also attended Harvard Business School2,000
.png)
+ 1,994 more
Also attended University of Southern California790
+ 784 more
Also attended University of Vermont95
+ 89 more
Also attended Lyndon Institute2
Shared employers
Also worked at Draper24
.avif)
+ 18 more
Also worked at Immedia Semiconductor1
Also worked at Mobivox1
Also worked at AT&T Bell Labs211
+ 205 more