h
hamiye_

Hammad Ahmed

@hamiye_

Senior Android Engineer

Pakistan
English
About me
I am a Senior Android Engineer with over 5 years of experience shipping production Kotlin apps, including SaaS e-commerce platforms and offline-first systems for the Saudi Ministry of Transport. I specialize in Clean Architecture and Jetpack Compose, consistently achieving 99.99% crash-free sessions and significant performance optimizations.... Read more

Skills

h
hamiye_
Hammad Ahmed
Offline • 

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Android App Development
I will build a custom android app with kotlin and jetpack compose
From$100 / projectMore details
Android App Development
I will fix android app bugs, maintain and improve your app
From$100 / projectMore details

Portfolio

Work experience

wulooj

Senior Android Engineer

wulooj • Full-time

Apr 2025 - Present • 1 yr 7 mos

Developed 5 SaaS e-commerce, F&B, and B2C Android apps in Kotlin with Clean Architecture, Hilt, and a modular codebase, published on Google Play. Architected SAR/YamamaCM, a Saudi Ministry of Transport Hajj app (2025/2026) for attendance, leave, and meal tracking; offline-first with Room, syncing automatically when connectivity returns. Built customer-facing flows across all five apps in Kotlin with MVVM: multi-branch browsing, cart, multi-step checkout, and live order tracking, plus loyalty and wallet features (rewards, send credit, gift cards). Integrated Checkout.com and Tap Payments SDKs into the apps' checkout flow, with tokenized session validation and explicit failure handling. Defined API contracts with backend engineers, implemented features against product and UI/UX specs, and validated every release with QA across Saudi Arabia, Egypt, and India.

Funsol_Technologies

Android Engineer

Funsol Technologies • Full-time

Mar 2024 - Apr 2025 • 1 yr 1 mo

Refactored legacy code and modularized core layers (SOLID, Clean Architecture, Hilt), reaching 99.99% crash-free sessions. Cut ANRs by ~90% by moving blocking work off the main thread with Coroutines and StateFlow. Built an audiobooks app with offline downloads and online streaming on Clean Architecture and MVVM. Set the team's architecture standard: Kotlin, Jetpack Compose, MVVM, and Clean Architecture.

Join_App Studio

Android Developer

Join App Studio • Full-time

Aug 2023 - Feb 2024 • 6 mos

Built an all-in-one utility app with 50+ everyday tools for daily routine and device use, in under 15 MB. Implemented anti-theft protection with Android sensor listeners and Camera Manager, including intruder selfie capture and security alarms. Persisted user settings and tool data locally with DataStore and Room.