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.
Founder at OneCLIYC S26
Intro paths
Jonathan went through Y Combinator (Summer 2026) β 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 β the partner who ran OneCLI's batch and knows the company first-hand. YC profile β
In turn, Jonathan can intro founders to OneCLI's investors below.
OneCLI's investors Β· 1
Co-founders at OneCLI
Experience
- OneCLICo-Founder & CEOcurrent2026 β present
- ChartDBFounder2025 β 2026
- Axis SecurityPrincipal Security Architect2020 β 2024New York, United States
- On DeckFounders Fellowship2020San Francisco Bay Area
- EbatesSoftware Engineer2019 β 2020Greater New York City Area
- FiverrSoftware Engineer2017 β 2019Greater New York City Area
- FiverrSoftware Engineer2016 β 2017Tel Aviv Area, Israel
- FiverrPlatform Engineer2014 β 2016
- Israel Defense ForcesSoftware Engineer2009 β 2014
- Madeira SQL Server ServicesSQL Server Consultant2012
Skills & more
+6 more
Node.jsMapReduceMicrosoft SQL ServerRuby on RailsSQL TuningHiveFrom Jonathan's professional profile.
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 Founder of OneCLI.
- What companies did Jonathan Fishner found?
- Jonathan Fishner founded OneCLI.
- Where did Jonathan Fishner go to school?
- Jonathan Fishner studied at Y Combinator (Summer 26 Batch); The College of Management Academic Studies (B.Sc., Computer Science).
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
+ 8,766 more
Y Combinator mafia4,716
Also came through, then founded or led a company.
+ 4,709 more
The College of Management Academic Studies mafia7
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended The College of Management Academic Studies49
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+ 43 more
Shared employers
Also worked at OneCLI1
Also worked at ChartDB1
Also worked at On Deck167
+ 161 more
