Rafael Zilião
Lead Mobile Security Engineer at Nubank
São Carlos, São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolRafael Zilião is a Lead Mobile Security Engineer with eight years of professional iOS-focused experience and over a decade in software engineering, currently driving mobile security at Nubank. He combines deep Swift and Apple ecosystem expertise with a proven track record in modularization, DevOps, and Mobile DevSecOps (SAST, DAST, SCA), translating security frameworks like OWASP, MASVS and MASTG into production-ready practices. Rafael has repeatedly cut build times and developer onboarding friction—most notably leading initiatives that reduced local build times by 900% and eliminated project file merge conflicts using Tuist and SPM cached dependencies. A strategic mentor and RFC author, he balances hands-on refactoring and architecture work (MVVM-C, VIPER, modular patterns) with shipping robust test suites and CI improvements. Based in São Carlos, Brazil, he brings a practical security-first mindset to mobile engineering, with experience in reverse engineering and malware analysis that informs stronger app hardening. Colleagues know him as a problem-solver who turns complex mobile constraints into measurable developer and product gains.
8 years of coding experience
8 years of employment as a software developer
Bacharelado em Matemática Aplicada, Bacharelado em Matemática Aplicada at USP - Universidade de São Paulo
Portuguese, English
Github Skills (29)
ios9
software-quality9
swiftui9
swift9
scalability8
scale8
objective-c8
maccatalyst8
ruby7
android7
xcode7
macos7
android-apps6
python6
java6
Programming languages (4)
Github contributions (5)
rafaelhziliao/desafio-mobile-platform
Jun 2021 - Feb 2022
Contributions:2 commits, 6 PRs, 39 pushes in 8 months
rafaelhziliao/iddog
Aug 2020 - Aug 2020
Contributions:3 commits, 6 PRs, 60 pushes in 1 day
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