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Ariel Tseitlin
InvestorPartner at Scale Venture Partners
Sunnyvale, California
Writes $5M – $15M checks · typically $10M
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About
Ariel Tseitlin, ex-Netflix Director of Cloud Solutions, backs technical security and infrastructure teams and uses his Netflix Simian Army/Chaos Monkey experience to advise scaling from product-market fit to enterprise.
Contact· self-published, not guessed
Invests in
AI & Machine LearningCloud ComputingCybersecurityData & InfrastructureDeveloper ToolsFintechSaaS
Beyond investing
- Founded
- Ariel Tseitlin founded and served as CEO of CTOWorks, a software consultancy helping early-stage entrepreneurs deliver their first product to market.
- Education
- Studied at UC Berkeley (bachelor's degree, Computer Science) Studied at The Wharton School of Business at the University of Pennsylvania (MBA)
- Hobbies
- Ariel Tseitlin flies his own Cirrus SR22T plane.
From published sources — common ground for a warm intro.
Deals · 9
System Initiative, Inc.Board seat
via Scale Venture Partners · filed Apr 2025 · $6.2M raise
Singularity TopCoBoard seat
via Scale Venture Partners · filed Oct 2024 · $53.4M raise
BigIDBoard seat
via Scale Venture Partners · filed Feb 2024 · $61.4M raise
Hound Technology, Inc.Board seat
via Scale Venture Partners · filed Apr 2023 · $50M raise
VntgBoard seat
via Scale Venture Partners · filed Mar 2023 · $21M raise
Cyber Global Risk ExchangeBoard seat
via Scale Venture Partners · filed Dec 2019 · $40M raise
Threat StackBoard seat
via Scale Venture Partners · filed Sep 2017 · $37.5M raise
CloudHealth TechnologiesBoard seat
via Scale Venture Partners · filed Jun 2017 · $46M raise
AgariBoard seat
via Scale Venture Partners · filed Jan 2016 · $4M raise
Attribution from SEC filings, press coverage, and firm rosters.
Other disclosed investments
Investor
AppOmniClearvectorCybergrxExpelHoneycombHuman SecurityLoopsLumosPerimeterXPrime SecurityProcessUnitySystem InitiativeUpsolverVantage
Sources: SEC Form D filings · curated public sources.
Colleagues at Scale Venture Partners
Network7
Investors connected to Ariel in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Ariel Tseitlin?
- Ariel Tseitlin, ex-Netflix Director of Cloud Solutions, backs technical security and infrastructure teams and uses his Netflix Simian Army/Chaos Monkey experience to advise scaling from product-market fit to enterprise.
- Where does Ariel Tseitlin work?
- Ariel Tseitlin is Partner at Scale Venture Partners.
- What does Ariel Tseitlin invest in?
- Ariel Tseitlin invests in AI & Machine Learning, Cloud Computing, Cybersecurity, Data & Infrastructure, Developer Tools, Fintech, SaaS.
- What check size does Ariel Tseitlin write?
- Ariel Tseitlin typically writes checks of $5M – $15M.
- What boards does Ariel Tseitlin sit on?
- Ariel Tseitlin holds tracked board seats at Agari, AppOmni, BigID, CloudHealth Technologies, Cyber Global Risk Exchange, Expel, Hound Technology, Inc., Lumos, Singularity TopCo, System Initiative, Inc..
- What companies has Ariel Tseitlin invested in?
- Investments tracked here include Agari, AppOmni, BigID, Clearvector, CloudHealth Technologies, Cybergrx, Expel, Honeycomb, Human Security, Loops, Lumos, PerimeterX, and 6 more.
About this profile. Compiled from public sources — Scale Venture Partners's own website, regulatory filings and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights