Leena siddiqui

I've led Android development at SecureTech Consultancy for Jazz BVS and Jazz MFS, building biometric verification and mobile financial-service applications used by thousands of agents and merchants nationwide.

I architect secure Kotlin applications with MVVM and Clean Architecture, including AES/RSA encryption, SSL pinning, Suprema fingerprint-scanner integration, and NADRA verification flows. My work reduced crash rates by approximately 35% and removed more than 100 nested-listener call sites through Coroutines and Flow.

Previously, I led four Android engineers at Lads Technologies to deliver Google Play consumer apps including Cloud Drive Backup and Smart Switch, reaching 100K+ combined installs. I improved cold-start time by approximately 30%, lowered memory footprint by approximately 25%, and owned releases, staged rollouts, Crashlytics monitoring, and CI/CD automation.

Across fintech, cloud backup, device transfer, and offline-first products, I build maintainable Android systems with Kotlin, Jetpack Compose, AWS, Firebase, Retrofit, Room, and automated testing. I enjoy setting engineering standards, mentoring teams, and partnering with product, QA, backend, and design colleagues to ship reliable releases.