Android (Kotlin/Java)
Modern APIs, Jetpack components, clean architecture, performance tuning.
Mobile App Engineer (Android + Flutter)
Reliable Android + Flutter apps with clean architecture and fast delivery.
I build user-friendly mobile apps with strong support for subscriptions, media features, and Firebase integrations.
30+
projects delivered on Upwork + Mostaql
Android + Flutter
Kotlin, Java, Dart
Subscriptions & media
IAP, Firebase, maps
Focus areas
- Subscriptions & in-app purchases with restore flows and backend validation.
- Media features: photo/video/audio upload, compression, caching, playback.
- Location-based features: GPS, maps, geo-tagging, nearby places.
Android (Kotlin/Java)
Flutter (Android + iOS)
Firebase + AdMob
Services
Android + Flutter delivery with subscriptions, media, and maps
Mobile app development focused on Android and Flutter, with monetization, Firebase analytics, media workflows, and reliable release support.
Flutter (Android + iOS)
Cross-platform delivery with consistent UI/UX, animations, and responsive layouts.
Subscriptions & IAP
Setup, restore, upgrades/downgrades, backend validation, and purchase UX.
Firebase & AdMob
Auth, Firestore, Analytics, Crashlytics, push notifications, and monetization.
Media features
Photo/video/audio upload, compression, caching, playback, and offline handling.
Location & maps
GPS, Google Maps, geo-tagging, nearby places, and routing-aware UI flows.
Maintenance & QA
Bug fixing, refactoring, performance improvements, and release support.
Featured Work
Mobile apps that ship and stay healthy
Each case study includes tech stack, features, and proof (store links, GitHub, or demos).
Qibla Compass — Qibla + Mosques + Tasbeeh
Accurate Qibla direction with GPS + sensors, nearby mosques map, Tasbeeh, 99 Names of Allah, and remove-ads subscriptions.
- Subscriptions with restore across Android + iOS.
- Google Maps for nearby mosques; compass themes with real-time sensor updates.
- Firebase Analytics + AdMob monetization.
StoryMight — Media storytelling with subscriptions
Long-term collaboration adding subscriptions, media uploads/compression, caching, and continuous feature delivery with a Node.js validation backend.
- In-app purchases + restore across Android/iOS with backend validation.
- Photo/video/audio upload flows with compression and caching.
- Profile edits, quiz feature, and ongoing bug fixing/performance tuning.
Remote Keyboard — Custom layouts + edit mode
Android app for building and using remote-control keyboard layouts with drag/resize, custom icons/colors, and remote keystrokes.
- Dual modes: normal vs edit (long press) with live layout changes.
- Local persistence with Room, Hilt DI, Coroutines, Navigation.
- Clean UI for layout building; responsive across device sizes.
Sleep Tracker — Sensor-driven sleep insights
Sleep and wake tracking concept using device interactions/sensors, with analytics-style UI and sync-ready data model.
- Sleep/wake detection concept paired with charted insights UI.
- Local storage with Firebase/AWS sync direction in the architecture.
- Polished XD-derived screens for rapid iteration and demos.
PetFinder — Modern pet adoption app
Clean, modern Android app with filters, infinite scroll, and detailed pet profiles built with MVVM + Clean Architecture.
- Category filters (cat, horse, bird, rabbit) with placeholder handling.
- Infinite scroll pagination with token management.
- Hilt DI, Coroutines, Navigation, Glide for robust UI flows.
SonicFlash — Flashlight effects + AdMob
Lightweight flashlight app with SOS/pulse effects and AdMob monetization, built for fast access and reliability.
- Custom flashlight effects (SOS, pulses, more) with quick toggles.
- AdMob integration and fast cold-start behavior.
- Planned screen-light fallback for devices without flash.
How I work
Clear scope, fast iterations, reliable releases
Scope + milestones
Clear scope and milestone plan so you always know what’s next.
Fast, transparent updates
Frequent updates and fast communication with demos/builds.
Clean architecture
MVVM / Clean Architecture when suitable to keep code maintainable.
Testing + stability
Build verification before delivery, crash/analytics visibility, and performance profiling.
Handover ready
Release notes, environment details, and implementation notes for easy maintenance.
Results
What clients say
Selected feedback from long-term collaborations and rapid engagements.
“Esmail is a talented and motivated Android developer. He has an excellent work ethic and takes a real interest in the quality of the work.”
Client review
Android feature delivery — 5.0 ★
“Esmail is an excellent developer. He communicates well, writes clean and effective code, and is always looking for a better, cleaner way.”
Long-term client
Multi-release engagement — 5.0 ★
“Yet another job completed successfully with Esmail. Excellent developer with great skills, communication, and work ethic.”
Repeat partner
Maintenance & new features — 5.0 ★
“Esmail is a skilled programmer who communicated perfectly in English and got the job done quickly. Patient and handled changes gracefully.”
Startup founder
Android delivery — 5.0 ★
Let’s build
Tell me what you want to build (or fix)
Share your timeline and target platforms (Android / iOS). I’ll propose a clean plan and start moving quickly.