Senior Android Developer
Yellow Beam Technologies
• Led end-to-end development of a secure native Android chat application in Kotlin, architecting core modules and delivering 6 production releases that scaled to 10,000+ active users. • Designed and implemented 1-to-1 and group messaging features, improving message delivery reliability by 30% and reducing messaging-related crashes by 25%. • Built end-to-end encryption (E2EE) using industry-standard cryptographic algorithms integrated with Android Keystore, securing all communications for 10,000+ users and eliminating data exposure risk. • Integrated real-time messaging via WebSockets and event-driven APIs, cutting message latency by 50% while sustaining 99.9% delivery reliability under production load. • Engineered offline message support and synchronization logic, improving resilience in low-connectivity environments and reducing sync failures by 35%. • Applied Clean Architecture and MVVM with Jetpack components, reducing code coupling and accelerating feature delivery velocity by 20%. • Collaborated cross-functionally with backend, security, product, and design teams to translate requirements into technical solutions, achieving 100% on-time release delivery across all milestones. • Maintained coding standards, test coverage, and documentation practices that reduced post-release defects by 15% and improved overall app stability. • Led performance optimization and debugging initiatives, improving app responsiveness by 20% and minimizing production incidents. • Drove security reviews in collaboration with the security team, identifying and remediating vulnerabilities across authentication, data storage, and API communication layers. • Mentored junior developers on secure coding practices, MVVM patterns, and Jetpack component usage, contributing to team-wide quality improvements. • Conducted code reviews and enforced architectural consistency across modules, reducing technical debt and ensuring scalability of core application components.
