Antonio Viggiano is a Senior Security Engineer based in São Paulo with a decade of experience securing blockchain and Web3 systems across startups and audit labs. He blends hands-on vulnerability research and audit work (Oak Security, Spearbit) with builder instincts as co-founder of Recon and founder of Fuzzy, focusing on invariant testing and fuzzing for protocol safety. Currently exploring AI-assisted bug hunting at Monad Foundation while helping scale SizeCredit and contributing to Recon-Fuzz and Rheo projects, he moves fluidly between research, tool-building, and teaching. His background spans full-stack product work, CTO responsibilities, and multiple founders’ ventures, giving him rare cross-functional fluency from product to low-level security. Notably, he teaches invariant testing bootcamps and publishes deep dives on account abstraction, signaling a commitment to raising the next wave of secure Web3 engineers.
10 years of coding experience
11 years of employment as a software developer
Master of Engineering (M.Eng.), Information Technology and Digital Society, Master of Engineering (M.Eng.), Information Technology and Digital Society at Centrale Méditerranée
Bachelor of Engineering - BE, Mechatronics, Robotics, and Automation Engineering, Bachelor of Engineering - BE, Mechatronics, Robotics, and Automation Engineering at USP - Universidade de São Paulo
LC2 Fellow, Entrepreneurship/Entrepreneurial Studies, LC2 Fellow, Entrepreneurship/Entrepreneurial Studies at Latitud
Contributions:62 reviews, 57 commits, 24 PRs in 1 year 11 months
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Antonio Viggiano - Senior Security Engineer at Monad Foundation