About
Simon Ratner is founder and CTO of Proxy, which develops a digital wallet application for mobile devices and wearable rings that handles payments, identity verification, and authentication.
Founder/CTO at ProxyYC S16
Intro paths
YC
Simon went through Y Combinator (Summer 2016) — any YC alum in your network can reach them through the YC community.
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In turn, Simon can intro founders to Proxy's investors below.
Proxy's investors · 4
Co-founders at Proxy
DM
Denis MarsFounder/CEO
Experience
- ŌURAVP Software Engineeringcurrent2023 — present
- Proxy (acquired by ŌURA)CTO, Founder2015 — 2023San Francisco Bay Area
- Jive SoftwareEngineer2013 — 2015San Francisco Bay Area
- InporiaCTO2011 — 2013San Francisco Bay Area
- YouTubeEngineer2008 — 2011
- Omnisio (acquired by Google)CTO, Founder2008
- Sensory Networks (acquired by Intel)Engineer2003 — 2006
- University of SydneyTeaching Assistant2002 — 2004
- UnixpacNetwork Security Consultant2000 — 2002
- FreelanceSoftware Consultant1996 — 2002Sydney, New South Wales, Australia
Skills & more
Multi-screen Systems3Vernam Cipher Cryptography1Software ArchitectureHardware ArchitectureLinux20Security3CryptographyDistributed Systems2Embedded SystemsWearable TechnologyMobile Devices6Mobile Applications2
+12 more
Web ApplicationsCloud ComputingScalabilityAlgorithmsComputer ScienceCC++JavaScriptTypeScriptPythonRubyGitFrom Simon's professional profile.
Frequently asked questions
- Who is Simon Ratner?
- Simon Ratner is founder and CTO of Proxy, which develops a digital wallet application for mobile devices and wearable rings that handles payments, identity verification, and authentication.
- Where does Simon Ratner work?
- Simon Ratner is Founder/CTO of Proxy.
- What companies did Simon Ratner found?
- Simon Ratner founded Proxy.
- Where did Simon Ratner go to school?
- Simon Ratner studied at Stanford University (MS, Electrical Engineering); Y Combinator (Proxy (acquired by ŌURA), S16); Y Combinator (Omnisio (acquired by Google), W08).
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1
+ 8,766 more
Y Combinator mafia4,716
Also came through, then founded or led a company.
Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyDarius "Bubs" MonsefS19Founded Sightbox +3Matthew ScholzFounded Oisin Biotechnologies +3
+ 4,709 more
Stanford University mafia903
Also came through, then founded or led a company.
Peter ThielJ.D.Founded PayPal +1Reid HoffmanB.S.Founded LinkedIn +2Joe LonsdaleBSFounded Opto +3Mike Maples JrBSFounded Pattern BreakersSteve JurvetsonMSEEFounded Mojo VisionBalaji SrinivasanGraduate StudentFounded Counsyl +1
+ 896 more
University of Sydney mafia35
Also came through, then founded or led a company.
Jesse BuckinghamBachelor of EconomicsFounded Vooma +2Alek SafarianB.Pharm.Founded Vantage Biosciences +1Ryan JuneeBComFounded Parsable +1Ben SandComputer Science - 3.5 years completed.Founded Strong Compute +1Daniel DarlingEconomics Social SciencesFounded FocalPaul HunyorLLB / EconFounded OpenSC
+ 28 more
Jive Software mafia5
Also came through, then founded or led a company.
Same school
Also attended Stanford University2,000
Peter ThielCo-founder & Partner at Founders FundReid HoffmanCo-founder of LinkedIn; Partner at GreylockDavid SacksCo-founder & General Partner at Craft Ventures; former White House AI & Crypto CzarKeith RaboisManaging Director at Khosla VenturesGarry TanPresident & CEO of Y CombinatorAlfred LinPartner at Sequoia Capital
+ 1,994 more
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports Ventures
+ 1,994 more
Also attended University of Sydney364
Clay RobbinsForward Deployed Partner at Slow VenturesClare McCartney BeerCOO & Managing Director at Burda Principal InvestmentsTony NystenPartner at OpenOceanGustav von SydowInvestor at EQT VenturesMarlene Söderberg JohanssonInvestor at EQT VenturesNaomi GunasekaranDeputy Chief Financial Officer, Funds - Finance at Magnetar AI Ventures
+ 358 more
Shared employers
Also worked at ŌURA19
Kevin RoseExploring emerging AI / tech trends, finance, health, minimal-living, philosophy, and the discipline of Zen.Timo AhopeltoSerial tech entrepreneur and early-stage investor running Lifeline VenturesEurie KimManaging Partner at Forerunner VenturesHal TilyVenture Partner at Rackhouse Venture Management LpNate WilliamsFounder, Managing Partner at UNION Labs VenturesJason LinCo-founder and General Partner at Lifelike Capital
+ 13 more
Also worked at Proxy (acquired by ŌURA)5
Also worked at Jive Software20
Pat GradyPartner at Sequoia CapitalJim GoetzPartner at Sequoia CapitalViviana FagaGeneral Partner at Felicis VenturesAna AndreescuInvestor at Index VenturesSydney SloanChief Marketing Officer at Scale Venture PartnersBala SathiamurthyInvestor at IVP (Institutional Venture Partners)
+ 14 more
Also worked at YouTube101
Roelof BothaAdvisor & former Steward at Sequoia Capital; SpaceX board memberEllie HinkenInvestor at Khosla VenturesAyesha AroraVenture Partner at S32Jayden BaiInvestor at Dorm RoomJoe LawsCo-Founder & Chief Architect, Trase at Red Cell IncubationKate MasonVenture Partner at AirTree Ventures
+ 95 more












































