Humberto Júnior
Cyber Security Technical Leader at Mercado Livre Brasil
Paraíba, Brazil
Summary
👤
Senior🎓
Top SchoolHumberto Júnior is a Cyber Security Technical Leader with 9 years of hands-on experience protecting large-scale platforms, currently shaping defenses at Mercado Livre in Brazil. He combines offensive security, threat modeling, abuse case analysis, and threat intelligence to preempt and mitigate sophisticated attacks across applications and infrastructure. A seasoned educator and consultant, he concurrently teaches cybersecurity and full-stack topics at multiple universities and advises organizations on ISO27001/PCI-DSS, cloud security and vulnerability management. His background spans roles from systems and network engineering to security management, giving him rare end-to-end visibility from low-level infrastructure to application security. Humberto also pursues advanced studies in AI, threat intelligence and cyber defense, applying research-minded techniques to practical security problems. Based in Paraíba, he blends academic rigor with battlefield-tested red teaming to foster a security-first culture in complex environments.
9 years of coding experience
2 years of employment as a software developer
Pós-graduação Latu Sensu, Inteligência Artificial, Machine Learning e Data Science, Especialização, Pós-graduação Latu Sensu, Inteligência Artificial, Machine Learning e Data Science, Especialização at Faculdade VINCITTenólogo em Processamento de Dados, Sistemas para Internet, Tenólogo em Processamento de Dados, Sistemas para Internet at ASPERGerência de Projetos de Software, Gerência de Projetos de Software at Instituto de Ensino Especializado da ParaíbaPós-graduação Lato Sensu - Especialização, Defesa Cibernética, Pós-graduação Lato Sensu - Especialização, Defesa Cibernética at Centro de Inovação VincIT - UNICIVTecnologo, Sistemas para Internet, Tecnologo, Sistemas para Internet at Faculdade de Tecnologia da Paraíba - FATECPBEstácio de Sá UniversityMaster's degree, Information Technology, Master's degree, Information Technology at Instituto Federal de Educação, Ciência e Tecnologia da Paraíba
English, Portuguese, Spanish
Github Skills (65)
penetration-testing10
brasil10
security10
fingerprint10
rio10
mobile-application10
verification10
integrity10
tricks10
android-app10
gitbook10
methodology9
owasp9
threat-intelligence9
ubuntu9
Programming languages (7)
Github contributions (5)
halencarjunior/BugBuntu
May 2021 - Jul 2021
BugBuntu Linux
Contributions:1 review, 27 commits, 1 PR in 2 months
linuxperformance-tuningubuntu
halencarjunior/halencarjunior
Oct 2021 - Aug 2022
Contributions:6 commits, 5 pushes, 1 branch in 10 months
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