Gabriel Costa Castello

Gabriel Costa Castello is a seasoned IT professional with extensive experience in software development and cybersecurity. Currently serving as a Senior Pentester at CyberProof since June 2020, Gabriel has also been self-employed as a Bug Hunter on platforms like Hackerone and Bugcrowd since March 2018. Previous roles include Web Application Pentester and Developer Analyst in .NET at Delonia Software, along with similar positions at Mercer Health & Benefits, Novabase, and ilitia Technologies, where a strong foundation in various Microsoft technologies was built. Gabriel holds multiple certifications in ethical hacking and full-stack web development, alongside formal education in systems administration and tourism.