Lahore, Pakistan · Open to remote

Usman Mahmood

Android & Flutter Engineer

Android and Flutter engineer with ~4 years shipping 8+ Play Store apps and 2 App Store apps (Ponder, Baritastic) in Kotlin, Jetpack Compose, Flutter, and BLE. Specialize in BLE/IoT for healthcare and hardware. Increased AdMob revenue 30% and user retention 15% through data-driven Firebase personalization. Own release pipelines with Fastlane and GitHub Actions. Domains: healthcare, fitness, energy, wellness.

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Focus

BLE · IoT · Mobile

Healthcare devices, Wear OS companions, solar controllers, and store-ready Android & Flutter releases.

Stack: Kotlin · Compose · Flutter
Availability: Open to remote

~4 yrs

Experience

8+

Play Store apps

2

App Store apps

30% / 15%

AdMob lift · retention

Services

What I do

End-to-end mobile delivery — from architecture and BLE hardware integration to store releases and growth.

Android apps

Kotlin, Jetpack Compose, MVVM/MVI, Clean Architecture — production apps for healthcare, fitness, and marketplaces.

Flutter apps

Dart, Provider, iOS + Android store releases — shipped App Store titles including Ponder and Baritastic.

BLE / IoT

Healthcare devices, solar controllers, Wear OS companions — reliable hardware connectivity and diagnostics.

Release & growth

Fastlane, GitHub Actions, Firebase, AdMob — owned pipelines and measurable revenue/retention gains.

Toolkit

Skills

Languages, frameworks, and platforms used across shipping apps and release pipelines.

Kotlin
Java
Dart
Jetpack Compose
Coroutines
Room
Hilt / Dagger / Koin
WorkManager
Wear OS
Flutter / Provider
Firebase suite
REST / Retrofit
FastAPI
BLE / IoT
OpenAI / Gemini
GitHub Actions
Fastlane
AdMob
Stripe
Zoom SDK
Maps

Portfolio

Projects

Selected shipped and in-progress work across Android, Flutter, and iOS.

Ponder

App Store

AI mental health companion with conversational support, TTS/STT, and thoughtful UX for wellness.

Flutter
Provider
OpenAI
TTS/STT

App Store

Baritastic

App Store

Bariatric tracker supporting patients with logging, guidance, and ongoing post-surgery wellness habits.

Flutter
iOS
Healthcare

App Store

I-Hunt

Play Store

Hunting-land marketplace with Stripe escrow, Maps, offline support, and in-app chat.

Kotlin
MVVM
Hilt
Stripe
Maps

Play Store

Club System

Play Store

Fitness booking and workouts with FCM notifications and a Fastlane-backed release pipeline.

Compose
MVI
Koin
Firebase
Fastlane

Play Store

μOhe (MOHE)

Play Store

BLE diagnostics with Wear OS companion support and Maps for healthcare hardware workflows.

Kotlin
BLE
Wear OS
Maps

Play Store

ReTeam

Play Store

Team video platform with Wall of Fame, courses, and Zoom SDK integration for live sessions.

Kotlin
Zoom SDK
Courses

Play Store

Go Power

Play Store

BLE solar/gyro monitoring for hardware controllers — 200+ installs on Play Store.

Kotlin
BLE
IoT
Energy

Play Store

Auto Expense Tracker

In progress

SMS/email ingest with Gemini parsing and a FastAPI / Cloud Run backend — private codebase.

Gemini
FastAPI
Cloud Run
SMS/Email

Career

Experience & education

Experience

Software Engineer — Android | Flutter

NextBridge, Lahore

Aug 2025 – Present

Mentor interns; MVI; building ReTeam (Zoom SDK, Kotlin, RxJava, Dagger, MVP); shipped course enrollment on live Play Store app.
Software Engineer — Android

BrainX Technologies, Lahore

Mar 2023 – Aug 2025

4+ production apps Kotlin/Compose; +30% AdMob; +15% retention Firebase; BLE apps (Go Power); Fastlane/GHA; Wear OS, GPT, Visage.

Education

B.S. Computer Science

University of Management and Technology, Lahore

Feb 2019 – Feb 2023

CGPA 3.71

Get in touch

Let’s build something

Open to remote Android / Flutter / BLE roles and product collaborations. Prefer email or LinkedIn for first contact.

Email usman.hussain940@gmail.com
Phone +92-320-4112842
LinkedIn linkedin.com/in/usmanmahmood940
GitHub github.com/usmanmahmood940
Location Lahore, Pakistan · Open to remote