Senior Android Developer at Yellow Beam Technologies

Led end-to-end development of a secure native Android chat application in Kotlin, architecting core modules and delivering production releases that scaled to 10,000+ active users. Built 1-to-1 and group messaging, improving delivery reliability by 30% and reducing messaging-related crashes by 25%. Implemented end-to-end encryption (E2EE) integrated with Android Keystore to secure communications and reduce data exposure risk. Integrated real-time messaging via WebSockets, cutting message latency by 50% while sustaining 99.9% delivery reliability under production load. Engineered offline message support and synchronization logic, reducing sync failures by 35%. Applied Clean Architecture and MVVM with Jetpack components, reducing coupling and improving delivery velocity by 20%. Drove security reviews across authentication, data storage, and API communication layers; mentored juniors; and improved app responsiveness by 20% through performance optimization and debugging.

Android Reverse Engineer at Yellow Beam Technologies

Performed comprehensive Android reverse engineering and security assessments using tools such as Ghidra, APKTool, Frida, Objection, and Burp Suite, covering static and dynamic analysis of cryptographic implementations, secure data storage, and network communication. Analyzed and bypassed application hardening controls including obfuscation, anti-tampering, anti-debugging, and anti-emulation protections. Reverse engineered third-party SDKs to identify hidden risks and validate security alignment. Produced detailed technical reports, supported remediation, and verified robustness of security controls using dynamic instrumentation and memory inspection techniques.