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About
Jonathan Fishner is the founder of OneCLI. He previously held the role of Principal Security Architect at Axis Security and worked as a Software Engineer at Fiverr for four years. He began his career in the IDF's Unit 8200, where he established and led the unit's first Big Data team.
CEO at OneCLIYC S26
Intro paths
Jonathan went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, Backing expeditions into the future — the partner who ran OneCLI's batch and knows the company first-hand. YC profile ↗
In turn, Jonathan can intro founders to OneCLI's investors below.
OneCLI's investors · 2
Co-founders at OneCLI
Investments
Per curated public sources.
Frequently asked questions
- Who is Jonathan Fishner?
- Jonathan Fishner is the founder of OneCLI. He previously held the role of Principal Security Architect at Axis Security and worked as a Software Engineer at Fiverr for four years. He began his career in the IDF's Unit 8200, where he established and led the unit's first Big Data team.
- Where does Jonathan Fishner work?
- Jonathan Fishner is CEO of OneCLI.
- What companies did Jonathan Fishner found?
- Jonathan Fishner founded OneCLI.
- What companies has Jonathan Fishner invested in?
- Investments tracked here include Context.dev, Jcode, OpenRelay, Traceloop.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
The College of Management Academic Studies mafia33
Also came through, then founded or led a company.
Axis Security mafia4
Also came through, then founded or led a company.
About this profile. Compiled from public sources — OneCLI's own website 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