Justin P Jose — IOS Engineer

Senior Android Engineer with 4.8 years of experience building and scaling high-traffic consumer applications (9.2M+ downloads, 670k MAU, 75k DAU). At GreedyGame — an Indian ad-tech company building incentive and cashback apps — I lead architecture and performance initiatives across production Android systems, including migrations from MVVM → MVI, XML → Jetpack Compose, and monolith → multi-module architecture. Things I've shipped that I'm proud of: - Reduced real-world app startup time from 16.3s → 3.3s (~80%) by eliminating main-thread blocking I/O, parallelising initialisation, and combining API payloads - Improved crash-free users from 95% → 99.9% via structured coroutine exception handling, global error boundaries, and production monitoring - Reduced APK size by 20MB through R8, resource shrinking, SVG migration, and dynamic splits - Designed and published a revenue-generating Android SDK to Maven Central, consumed by external publisher apps - Modularised shared business logic across 6 apps via a common core module in a monorepo — reducing duplication and enabling consistent feature rollout - Acted as de facto product owner on several initiatives — wrote PRDs, led cross-functional scoping, and drove features from ideation to production with no dedicated PM Outside work, I independently built and monetised Pentecostal Hymns — available on both Play Store and App Store, 50k+ downloads, 6k MAU, 99% crash-free, subscription revenue via RevenueCat. I'm particularly interested in scalable mobile architecture, performance engineering, concurrency, and SDK/platform systems at high-impact product companies. Tech I work with: Kotlin · Jetpack Compose · MVI · Clean Architecture · Coroutines · Flow · Room · Koin · WorkManager · Retrofit · Firebase · Jenkins · GA4 · Mixpanel · AWS · GCP

Stackforce AI infers this person is a B2C Ad-Tech Android Developer with a focus on performance and SDK development.

Location: Bangalore Urban, Karnataka, India

Experience: 4 yrs 10 mos