MIDDE SHIVA KUMAR

Android Developer with 2.10 years of experience at Cognizant, currently working on XL Virtual from L3Harris Communications, a mission-critical P25 Push-To-Talk (PTT) application used for secure communication over cellular and Wi-Fi networks. Strong expertise in Android development using Java and Kotlin, with hands-on experience in MVVM architecture, Android Jetpack, Coroutines, Room Database, Retrofit, and REST APIs. Actively involved in developing and enhancing core PTT workflows, audio processing, Bluetooth audio integration, talkgroup management, and Ul modernization, ensuring low latency, high reliability, and stability in critical operational environments. Experienced in working on enterprise-grade, security-focused applications that integrate with P25 LMR systems and support real-time voice communication, messaging, and GPS services.

• Core contributor to XL Virtual from L3Harris Communications, a mission-critical P25 Push-To-Talk (PTT) Android application used for secure public-safety communications.
• Strong hands-on expertise in Android development using Java and Kotlin, implementing MVVM architecture and Android Jetpack components in enterprise-grade applications.
• Owned and delivered critical Android features, including secure password encryption, save-password functionality, auto-login, and audio visualizer animations for real-time PTT feedback.
• Played a key role in improving application stability and performance by resolving ANR, latency, and production-blocking issues in real-time communication workflows.
• Extensive experience with audio handling, Bluetooth integration, REST API integration (Retrofit), Room Database, and collaboration with onsite L3Harris teams in Agile environments.