Fundraising Fox

Katie Rae

Investor

CEO & Managing Partner at The Engine Ventures · Board director at Commonwealth Fusion Systems · Board director at via-separations · Board director at Cellino Bio

Cambridge, Massachusetts, United States

About

Katie Rae focuses on tough tech, backing non‑pivotable startups with decade‑plus roadmaps and fixed milestones, applies a CFO test to climate/deep‑tech economics, and bridges universities, national labs, corporates and government.

Contact· self-published, not guessed

Invests in

BiotechClimate TechDeep TechEnergyHardwareHealthtech

Board director at Commonwealth Fusion Systems

Intro paths

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In turn, Katie can intro founders to Commonwealth Fusion Systems's investors below.

Commonwealth Fusion Systems's investors · 45

Advection Growth CapitalNew York CityArmada Investment AGBay Bridge Ventures ClimateBerkeleyBeni Venture CapitalMiami · $100K – $250K checksBrainstorm VenturesSan FranciscoBreakthrough Energy VenturesBoston · $500K – $50M checks · since 2021Coatue ManagementNew York · $1M – $20M checksCollaborative FundNew York · $500K – $1M checksCongruent VenturesSan Francisco · $100K – $5M checksDevelopment Bank of JapanTokyo · since 2025Devonshire Investorssince 2020Doon CapitalSilicon ValleyEmerson Collective InvestingPalo Alto · $100K – $1M checksEni NextBoston · since 2020Equinor VenturesStavanger · $1M – $70M checks · since 2021Evolution VC PartnersNew YorkFine Structures VenturesCambridgeFootPrint CoalitionLos Angeles · $50K – $1M checks · since 2021Future VenturesLos Altos · $1M – $10M checksGalaxy InteractiveNew York · $1M – $20M checks · since 2025Gigascale CapitalPalo Alto · since 2025Global BrainTokyo · $100K – $184M checksHOF CapitalNew York · $25K – $15M checks · since 2025JERATokyo · since 2025Khosla VenturesMenlo Park · $5K – $50M checks · since 2020Kleiner PerkinsMenlo Park · $500K – $15M checks · since 2021LOWERCARBONJackson · $1M – $50M checksLowercarbon CapitalNew York · $100K – $5M checksMitsui & Cosince 2025Neva Sgr.TurinNTT DOCOMO VenturesTokyoNVenturesSanta ClaraPerot JainDallas · $500K checksPreston-Werner VenturesSan Francisco Bay Area · $500K – $3M checksPrime Movers LabJackson · $2M – $30M checksSafar PartnersCambridge · since 2020Schooner CapitalBoston · since 2020Starbridge Venture Capital LlcWashingtonStarlight VenturesMiami · $100K – $3M checks · since 2020Sumitomo Mitsui Banking CorporationTokyo · since 2025TemasekSingapore · since 2020The Engine VenturesCambridgeThrive CapitalNew York · $500K – $25M checksTiger Global ManagementNew York · $1M – $100M checks · since 2021Woori Venture Partners Us, Inc.Silicon Valley · since 2025

Co-founders at Commonwealth Fusion Systems

BS
Brandon SorbomFounder
RM
Robert MumgaardExecutive Officer, Director
DB
Daniel BrunnerExecutive Officer
BM
Bob MumgaardFounder

Board director at via-separations

Intro paths

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In turn, Katie can intro founders to via-separations's investors below.

via-separations's investors · 6

Azolla VenturesCambridgeClimate InvestmentLondonEmbark VenturesLos AngelesPrime Impact FundCambridge · $1M – $4M checksSafar PartnersCambridge · since 2021The Engine VenturesCambridge

Co-founders at via-separations

BKBrent Keller
Brent KellerExecutive Officer, Director
SD
Shreya DaveExecutive Officer, Director

Board director at Cellino Bio

Intro paths

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In turn, Katie can intro founders to Cellino Bio's investors below.

Cellino Bio's investors · 7

8VCAustin · $100K – $50M checksCota CapitalSan FranciscoFelicis VenturesSan Francisco · $500K – $15M checksHAWKTAILSan FranciscoHumboldtNew York · $100K – $5M checksKhosla VenturesMenlo Park · $5K – $50M checksThe Engine VenturesCambridge

Co-founders at Cellino Bio

NS
Nabiha Saklayen, PhDCo-Founder & CEO
MM
Marinna Madrid, PhDCo-Founder & Chief Product Officer
NS
Nabiha SaklayenExecutive Officer, Director
MW
Matthias WagnerExecutive Officer, Director

Experience

  1. Engine VenturesCEO and Managing Partnercurrent2017 — presentCambridge, Massachusetts, United States
  2. Form EnergyBoard Membercurrent2017 — present
  3. Commonwealth Fusion SystemsBoard Membercurrent2018 — present
  4. Boston MetalBoard Membercurrent2018 — present
  5. Sublime SystemsBoard Membercurrent2021 — present
  6. EVOLOHBoard Membercurrent2023 — present
  7. TeraDARBoard Membercurrent2024 — present
  8. The Engine AcceleratorBoard Member2017 — 2024Cambridge, MA
  9. The Engine AcceleratorCEO and Managing Partner2017 — 2023Cambridge, MA
  10. Project 11Managing Director2014 — 2017Project11.com
  11. TechStarsChairman, Techstars Boston2014 — 2017TechStars Boston
  12. TechStarsManaging Director2010 — 2014Boston, MA
  13. Startup InstituteCo-Founder2012 — 2016Cambridge, MA
  14. MITLecturer2010 — 2014
  15. Microsoft Startup LabsSr. Director, Product2007 — 2010
  16. Eons.comSVP Product2006 — 2007
  17. Lycos, Inc.VP Community and Communications2001 — 2003
  18. AltaVistaCo GM Ragingbull.com1999 — 2001
  19. Zip2Product Manager1997 — 1999

Skills & more

Entrepreneurship99Start-ups99Strategic Partnerships57Business Strategy30Leadership99Monetization3User Experience13Venture Capital50Product Management74Investments29Management62New Business Development4
+12 moreStrategyProgram ManagementProduct DevelopmentInnovationSaaSBusiness DevelopmentE-commerceCorporate DevelopmentTeam LeadershipProduct MarketingMobile ApplicationsMobile Devices

From Katie's professional profile.

Investments

Investor

FlywireGrabCADPillPack

Per the firm's website.

Colleagues at The Engine Ventures

Alaina Hartnett
Associate at The Engine Ventures
Ann DeWitt
General Partner at The Engine Ventures
Bettina Metais
Vice President of Investor Relations & Operations at The Engine Ventures
Colleen Calhoun
Investor at BURNT ISLAND VENTURES
Dan Resnicow
Operating Partner at The Engine Ventures
Darby Dunn
Executive in Residence at The Engine Ventures
David Bradwell
Operating Partner at The Engine Ventures
Deepa Rao
Associate at The Engine Ventures

Network1

Ann DeWittScout
General Partner at The Engine Ventures

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

Frequently asked questions

Who is Katie Rae?
Katie Rae focuses on tough tech, backing non‑pivotable startups with decade‑plus roadmaps and fixed milestones, applies a CFO test to climate/deep‑tech economics, and bridges universities, national labs, corporates and government.
Where does Katie Rae work?
Katie Rae is CEO & Managing Partner at The Engine Ventures and Board director at Commonwealth Fusion Systems and Board director at via-separations and Board director at Cellino Bio.
What does Katie Rae invest in?
Katie Rae invests in Biotech, Climate Tech, Deep Tech, Energy, Hardware, Healthtech.
What boards does Katie Rae sit on?
Katie Rae holds tracked board seats at Boston Metal, Commonwealth Fusion Systems, Form Energy, Teradar.
What companies has Katie Rae invested in?
Investments tracked here include Flywire, GrabCAD, PillPack.
Where did Katie Rae go to school?
Katie Rae studied at Yale School of Management (MBA, Strategy); Oberlin College (BA, Biology).

Same school

Also attended Yale School of Management135

Sanjot MalhiPartner at NorthzoneTrip HoferVenture Partner at .406 VenturesAustin KwounAnalyst at .406 VenturesNate WangVP of Investments at Plum Alley InvestmentsGabby CazeauInvestor at Harlem Capital PartnersRobert BettigoleManaging Partner at Elm Street Ventures

+ 129 more

Also attended Oberlin College31

Fred CummingsFounder, President, Portfolio Manager at BTECH CONSORTIUMYaoyao ChenAssociate Analyst at BTECH CONSORTIUMNicholas FergusonAssociate at BTECH CONSORTIUMMert KarabiyikOperations | Venture Fellow at 212Mira InbarPartner at ArcTern VenturesAllison PazInvestor at Reign Ventures

+ 25 more

Shared employers

Also worked at Commonwealth Fusion Systems11

Kike MirallesInvestment Director at Intel CapitalRandy GleinFounder and Managing Partner at DFJDan BrunnerAdvisor, Co-Founder and former CTO, Commonwealth Fusion Systems and Partner, Future Tech Partners at Overture ClimateTim KrysiekManaging Partner at MassMutual VenturesCarly AndersonPrincipal at Prelude VenturesHisham ElhaddadManaging Partner at HOF Capital

+ 5 more

Also worked at Boston Metal8

Mark CuptaManaging Director at Prelude VenturesMichael HammerCFO at BMW i VenturesShyam KamadolliManaging Director at Fine Structures VenturesChris PoirierBreakthrough Energy Ventures at Breakthrough Energy VenturesCooper RinzlerBreakthrough Energy Ventures at Breakthrough Energy VenturesShayle KannPartner at Energy Impact Partners

+ 2 more

Also worked at Project 112

Bob MasonCo-Founder and Managing Partner at ArgonReed SturtevantGeneral Partner at The Engine Ventures

Also worked at TechStars455

Brad FeldCo-founder of Foundry and TechstarsRustyAdvisor at Clear VenturesHouman HaghighiPartner, Business & Corporate Development at Menlo VenturesIsabelle StyslingerSenior Associate, Rise of the Rest at RevolutionWesley BarrowPartner at Correlation VenturesJack Bixby LucasGeneral Partner at Lucas Venture Group

+ 449 more