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In Sik Rhee

Investor

General Partner at Vertex Ventures · Board director at Experify · Board director at Upsolver Data

Los Altos, California, United States

Writes $100K – $15M checks

Find your path to In Sik Rhee

534 people in our graph share verified history with In Sik Rhee — schools, employers, funds. One of them is your warm intro.

Arhaan A.unlockedIn Sik Rhee: together at UC Berkeley (2022–2026)
×6In Sik Rhee: together at AOL
×2In Sik Rhee: together at UC Berkeley
In Sik Rhee: together at Accel Partners

About

Sik Rhee, who co-founded two companies that sold for a combined $1.8B, offers founder-investor perspective and focuses on enterprise infrastructure and data platforms, backing developer-driven founders who've lived the problem.

Contact· published on In's own website

Invests in

AI & Machine LearningCybersecurityData & InfrastructureDeveloper ToolsSaaS

Board director at Experify

Intro paths

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

Experify's investors · 6

Berkeley SkyDeck FundBerkeley · $200K checks · since 2022Bright Pixel CapitalLisbon · since 2022Rembrandt Venture PartnersLaramie · since 2022SICTICZürich · since 2022Sonae IMPorto · since 2022Vertex VenturesPalo Alto · $500K – $10M checks · since 2022

Board director at Upsolver Data

Intro paths

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In turn, In can intro founders to Upsolver Data's investors below.

Upsolver Data's investors · 3

Scale Venture PartnersSan Francisco · $5M – $25M checksVertex VenturesPalo Alto · $500K – $10M checks · since 2021WingPalo Alto · $200K – $20M checks

Co-founders at Upsolver Data

OR
Ori RafaelChief Executive Officer and Director of Issuer

Experience

  1. NorthflankBoard Membercurrent2026 — present
  2. SPRXBoard Membercurrent2026 — present
  3. PromptQLBoard Membercurrent2026 — present
  4. Smithsonian Asian Pacific American CenterAdvisory Board Membercurrent2023 — presentWashington, District of Columbia, United States
  5. Vertex Ventures USGeneral Partnercurrent2015 — presentSan Francisco Bay Area
  6. CosmonicBoard Membercurrent2022 — present
  7. CyberhavenBoard Membercurrent2019 — present
  8. TestlioBoard Membercurrent2016 — presentSan Francisco Bay Area
  9. UC BerkeleyAdvisory Board Member, College of Engineeringcurrent2007 — present
  10. Rembrandt Venture PartnersGeneral Partner2009 — 2014
  11. Accel PartnersVenture Partner2006 — 2008
  12. Opsware IncFounder, Chief Tactician2002 — 2006
  13. LoudcloudFounder, Chief Tactician1999 — 2002
  14. AOLCTO, E-Commerce1999
  15. Kiva SoftwareFounder, Architect1996 — 1997

Skills & more

Start-ups57Web Development3SaaS37Enterprise Software34Entrepreneurship45Scalability9Cloud Computing35E-commerce43Strategic Partnerships43Venture Capital69Product Management13PaaS3
+12 moreCompetitive AnalysisGo-to-market StrategyVirtualizationBusiness StrategyBusiness DevelopmentBig DataMobile DevicesManagementStrategyMobile ApplicationsDistributed SystemsProduct Marketing

From In's professional profile.

Deals · 1

ExperifyBoard seat

via Rembrandt Venture Partners · filed Jan 2022 · $4M raise

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

Other disclosed investments

Investor

Ambi RoboticsAstoundClearpolCosmonicCyberhavenHedvigInfineta SystemsMightySignalOoyalaRecceScuba AnalyticsTestlioTrusteroUpsolver

Sources: SEC Form D filings · curated public sources.

Colleagues at Vertex Ventures

Jonathan Heiliger
General Partner at Vertex Ventures
Sandeep Bhadra
General Partner at Vertex Ventures

Frequently asked questions

Who is In Sik Rhee?
Sik Rhee, who co-founded two companies that sold for a combined $1.8B, offers founder-investor perspective and focuses on enterprise infrastructure and data platforms, backing developer-driven founders who've lived the problem.
Where does In Sik Rhee work?
In Sik Rhee is General Partner at Vertex Ventures and Board director at Experify and Board director at Upsolver Data.
What does In Sik Rhee invest in?
In Sik Rhee invests in AI & Machine Learning, Cybersecurity, Data & Infrastructure, Developer Tools, SaaS.
What check size does In Sik Rhee write?
In Sik Rhee typically writes checks of $100K – $15M.
What boards does In Sik Rhee sit on?
In Sik Rhee holds tracked board seats at Evisort, Experify, Upsolver Data.
What companies has In Sik Rhee invested in?
Investments tracked here include Ambi Robotics, Astound, Clearpol, Cosmonic, Cyberhaven, Experify, Hedvig, Infineta Systems, MightySignal, Ooyala, Recce, Scuba Analytics, and 3 more.
Where did In Sik Rhee go to school?
In Sik Rhee studied at University of California, Berkeley (EECS, Electrical Engineering and Computer Science).

Founder mafias

Testlio mafia2

Also came through, then founded or led a company.

Steve SemelsbergerCEO & Board ChairFounded YouEarnedIt

Same school

Shared employers