Jonathan Jacobi
Co-Founder at Perfect Blue
Israel
Summary
👤
Senior🎓
Top SchoolJonathan Jacobi is a cybersecurity and AI-focused technologist and co-founder with a decade of experience building high-impact products and teams. He co-founded Perfect Blue, an international CTF team that rose to #1 globally and remains a top competitor, and has held research and leadership roles in Unit 8200 driving cutting-edge projects. Jonathan has early-career experience at Microsoft and Check Point as a vulnerability researcher and helped shape product growth in startups that were acquired by Wiz. He blends offensive security skills—regular CTF participation—with product-minded growth work, bridging deep technical research and practical product outcomes. Based in Israel, he pairs a formal background in mathematics and computer science with a knack for translating adversarial thinking into resilient systems. An unusual early-starter, he began impactful security research as a teenager, joining Microsoft at 17.
10 years of coding experience
6 years of employment as a software developer
Bachelor of Science (B.Sc.), Mathematics and Computer Science, Bachelor of Science (B.Sc.), Mathematics and Computer Science at Netanya Academic College
English, Hebrew
Stackoverflow
119reputation
5kreached
2answers
6questions
Github Skills (13)
ctf9
perfect9
heap8
gdb6
linux6
exploit6
dictionary6
reverse-engineering6
python6
in-place6
encryption6
decompiler5
compiler2
Programming languages (3)
Github contributions (5)
j0nathanj/CTF-WriteUps
Oct 2017 - Nov 2018
Contributions:148 commits, 139 pushes, 1 branch in 1 year 1 month
j0nathanj/Homemade-Decompiler
Feb 2018 - Jan 2019
Contributions:38 commits, 1 PR, 28 pushes in 10 months
compilerpythondecompiler
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