Dafina Toncheva
InvestorFounderGeneral Partner at US Venture Partners · Board director at Surgical Safety Technologies · Board director at Delfina Care · Board director at Arkose Labs
Menlo Park, California
Writes $2M – $10M checks · typically $6M
FoundedApptimize · YCArkose LabsDelfina CareInsideSalesStarMobileSurgical Safety Technologies
About
Dafina Toncheva joined USVP in 2012 as a General Partner investing in emerging enterprise technologies, focusing on enterprise SaaS applications and security. Before USVP she was a Principal at Tugboat Ventures and an investor at Venrock, and earlier held development and product roles at Microsoft.
Invests in
CybersecurityEnterprise SoftwareSaaS
Board director at Surgical Safety Technologies
Intro paths
In turn, Dafina can intro founders to Surgical Safety Technologies's investors below.
Surgical Safety Technologies's investors · 1
Co-founders at Surgical Safety Technologies
Board director at Delfina Care
Intro paths
In turn, Dafina can intro founders to Delfina Care's investors below.
Delfina Care's investors · 2
Co-founders at Delfina Care
Board director at Arkose Labs
Intro paths
In turn, Dafina can intro founders to Arkose Labs's investors below.
Arkose Labs's investors · 9
Co-founders at Arkose Labs
Experience
- U.S. Venture PartnersGeneral Partnercurrent2012 — presentMenlo Park, CA
- Percepto - Autonomous DronesBoard Member and Lead Investorcurrent2019 — presentIsrael
- Carrot FertilityBoard Member and Lead Investorcurrent2020 — presentSan Francisco Bay Area
- Raken, Inc.Board Member and Lead Investorcurrent2018 — presentGreater San Diego Area
- Arkose LabsBoard Member and Lead Investorcurrent2018 — presentSan Francisco Bay Area
- Luma HealthBoard Member and Lead Investorcurrent2017 — presentSan Francisco Bay Area
- InsideSales.com (acq. by Aurea)Board Member and Lead Investor2012 — 2021Provo, Utah Area
- Kenna Security (acq by Cisco)Board Observer and Lead Investor2012 — 2021
- Prevoty (acq by Imperva)Board Member and Lead Investor2015 — 2018Greater Los Angeles Area
- MATRIXX Software inc.Board member and Lead Investor2010 — 2012
- Aria SystemsBoard Observer2008 — 2012
- Risk I/OBoard Of Directors2010 — 2012
- Cloudflare, Inc.Lead Investor2009 — 2010
- VenrockInvestor2008 — 2010
- Bain&CoConsultant2007
- MicrosoftProgram Manager2002 — 2006
- MicrosoftSoftware Design Engineer2002 — 2004
Education
- Stanford University Graduate School of BusinessMBA2006 — 2008
- Harvard UniversityBA, Computer Science1998 — 2002
Skills & more
From Dafina's professional profile.
Deals · 7
Surgical Safety TechnologiesBoard seat
via US Venture Partners · filed Mar 2026 · $20.2M raise
Delfina CareBoard seat
via US Venture Partners · filed Feb 2025 · $17.4M raise
Arkose LabsBoard seat
via US Venture Partners · filed May 2021 · $70M raise
ApptimizeBoard seat
via US Venture Partners · filed Aug 2016 · $12.4M raise
InsideSalesBoard seat
via US Venture Partners · filed Mar 2015 · $90M raise
StarMobileBoard seat
via US Venture Partners · filed Mar 2015 · $3M raise
RakenLed round
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at US Venture Partners
Network9
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Investors connected to Dafina in public investor directories — a warm-intro map.
Frequently asked questions
- Where does Dafina Toncheva work?
- Dafina Toncheva is General Partner at US Venture Partners and Founder at Surgical Safety Technologies and Founder at Delfina Care and Founder at Arkose Labs.
- What does Dafina Toncheva invest in?
- Dafina Toncheva invests in Cybersecurity, Enterprise Software, SaaS.
- What check size does Dafina Toncheva write?
- Dafina Toncheva typically writes checks of $2M – $10M.
- What companies did Dafina Toncheva found?
- Dafina Toncheva founded Apptimize, Arkose Labs, Delfina Care, InsideSales, StarMobile, Surgical Safety Technologies.
- Does Dafina Toncheva lead rounds?
- Yes — Dafina Toncheva has led 2 tracked investments.
Same school
Also attended Stanford University Graduate School of Business1,291
+ 1,285 more
Also attended Harvard University1,457
+ 1,451 more
Shared employers
Also worked at Carrot Fertility5
Also worked at Raken, Inc.2
Also worked at Risk I/O10
+ 4 more
Also worked at Venrock67
+ 61 more