Fundraising Fox

Roman Khomenko

Founder

Founder at 9 Mothers

United States

Founded9 Mothers · YC

About

Roman Khomenko was a data scientist at Rainforest QA (YC S12). He is co-founder of 9 Mothers Defense, where he works on AI-driven counter-drone systems.

Founder at 9 MothersYC X26

Intro paths

YC

Roman went through Y Combinator (Spring 2026) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Garry Tan, President & CEO of Y Combinator — the partner who ran 9 Mothers's batch and knows the company first-hand. YC profile ↗

→

In turn, Roman can intro founders to 9 Mothers's investors below.

9 Mothers's investors · 5

Daft CapitalPalo Alto · $500K – $2M checksSterling RoadSan Francisco · $50K – $150K checksStreamlined VenturesPalo Alto · $100K – $1M checksTheory Forge VenturesTustinY CombinatorSan Francisco · $500K checks · since 2026

Co-founders at 9 Mothers

RSRussell Smith
Russell SmithFounder / CEO
BPBogdan Pyzh
Bogdan PyzhCo-Founder, COO

Experience

  1. 9 MothersBuilder of Thinking Machinescurrent2024 — presentTexas, United States
  2. Rainforest QALead AI Data Scientist2016 — 2024
  3. DataRobotData Scientist2015 — 2016Greater Boston
  4. DisOpt.comSoftware Development Consultant2006 — 2014
  5. DisOpt.comSecurity Researcher2002 — 2013
  6. Police of UkraineOfficer2008 — 2009Ukraine
  7. Police of UkraineSergeant2003 — 2008Ukraine
  8. Police of UkrainePrivate2001 — 2003Ukraine

Skills & more

SecurityEngineeringLeadershipData Science

Languages English · German · Spanish · Ukrainian

From Roman's professional profile.

Frequently asked questions

Who is Roman Khomenko?
Roman Khomenko was a data scientist at Rainforest QA (YC S12). He is co-founder of 9 Mothers Defense, where he works on AI-driven counter-drone systems.
Where does Roman Khomenko work?
Roman Khomenko is Founder of 9 Mothers.
What companies did Roman Khomenko found?
Roman Khomenko founded 9 Mothers.
Where did Roman Khomenko go to school?
Roman Khomenko studied at Kharkiv National University of Radio Electronics (Master's degree, Computer Science).

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

DataRobot mafia7

Also came through, then founded or led a company.

Jeremy AchinData Scientist, Founder, and CEOFounded Neo Cybernetica +2Diego OppenheimerExecutive Vice President, Machine Learning OperationsFounded Guardrails AI +1Konstantine BuhlerPartner @ Series D and BeyondFounded Listen LabsIgor TaberInvestorFounded Cortical VenturesNoa FlahertySoftware Engineer, Team Lead - COVID IntelligenceFounded VellumTim SherwoodDomain Lead, Senior Software EngineerFounded Partnered

DataRobot mafia4

Also came through, then founded or led a company.

Jeremy AchinExecutive Officer, Director, PromoterFounded Neo Cybernetica +1Noa FlahertySoftware Engineer, Business EngineeringFounded VellumTim SherwoodDomain Lead, Senior Software EngineerFounded Partnered

Rainforest mafia3

Also came through, then founded or led a company.

Russell SmithFounder / CTOFounded 9 MothersSriya MaramCustomer Success Management InternFounded Persana AI

Same school

Also attended Kharkiv National University of Radio Electronics2

Heorhii AzarovRust Blockchain Developer at MintlayerDenys AverinCIO at Everstake

Shared employers

Also worked at 9 Mothers2

Russell SmithFounder / CTO at RainforestBogdan PyzhCo-Founder, COO at 9 Mothers

Also worked at Rainforest QA7

Sam AwrabiFounder & Solo GP at Banyan VenturesHansae CatlettGeneral Partner at The MBA FundAllison PickensSolo GP Investor at Allison Pickens VenturesJim AndelmanCo-Founder and Managing Director at Bonfire VenturesFarlan DowellOperating Partner at Virta VenturesRussell SmithFounder / CTO at Rainforest

+ 1 more

Also worked at DataRobot23

Jai DasPartner, President at Sapphire VenturesKonstantine BuhlerInvestor at Sequoia CapitalMarguerite BensonSenior Advisor at Audere CapitalJonathan BarekChief Operating Officer at Next47Akihiko OkamotoInvestor at HeadlineSaad AnsariInvestor at Dash VC

+ 17 more