Jonathan Fishner
Founder at OneCLI
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolJonathan Fishner is a founder and seasoned software engineer with 11 years of experience building developer-first tools and secure systems from New York. He created ChartDB, an open-source, AI-powered database diagramming tool that has attracted over 20K GitHub stars and helped 100,000+ developers, and now leads OneCLI, focused on credentials, guardrails, and secure self-hosted agent gateways. Prior roles span principal security architecture and backend platform work at Axis Security, Fiverr, and Ebates, where he designed large-scale microservices, real-time matching, and event-sourced integrations. Comfortable across databases, distributed systems, and security, he combines product-driven engineering with practical open-source leadership. His background includes mission-critical systems experience from the IDF and a B.Sc. in Computer Science, reflecting a mix of operational discipline and entrepreneurial drive.
11 years of coding experience
14 years of employment as a software developer
B.Sc., Computer Science, B.Sc., Computer Science at The College of Management Academic Studies
Github Skills (92)
postgresql10
gmail10
database-diagram10
erd10
editor10
sql10
database-diagrams10
database10
readable10
sqlite10
mysql10
mariadb10
typescript10
schema-migrations10
microsoft-sql-server10
Programming languages (9)
Github contributions (5)
chartdb/chartdb-free-tools
Dec 2025 - Dec 2025
Contributions:19 PRs, 15 pushes, 14 branches in 6 days
emircanakpinar/chartdb
Nov 2024 - Nov 2024
Free and open-source database diagrams editor, visualize and design your DB with a single query.
Contributions:3 pushes in 3 days
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