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Muhammad Hammad Khan

@muhammadhammadkhan

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Principal Android Engineer with ~12 years in Kotlin, Compose and C++/NDK, based in Lahore.

Pakistan

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What I'm looking for

Remote-only senior/principal Android roles (full-time or contract, 40 hrs/week). Kotlin, Jetpack Compose, C++/NDK, fintech/audio/AI tooling. Based in Lahore, Pakistan; no visa sponsorship needed; not authorized to work in the US.

Principal / Senior Android Engineer (Kotlin, Jetpack Compose, C++/NDK) with about 12 years of experience building banking/fintech, audio and AI-tooling apps. Deep expertise in Kotlin (8+ yrs), Java (10+), Jetpack Compose (5+), Android SDK, C++/NDK, MVVM/Clean Architecture and Coroutines/Flow. Currently Principal Consultant - Android at Systems Limited. Based in Lahore, Pakistan; remote only; full-time or contract, 40 hrs/week.

Experience

Work history, roles, and key accomplishments

Current

Principal Consultant - Android

Current

Systems Limited

Aug 2021 - Present (5 years 3 months)

Lead a team of mobile developers, making architectural decisions and enforcing best practices. Led native Android development for ZainCash, FINCA Pay, TAMM, mystc KSA, and AP News, focusing on FinTech security, Jetpack Compose, and performance optimization.

Senior Android Developer

Virtual Force

Apr 2021 - Jul 2021 (3 months)

Implemented Stripe and multiple payment gateways for TCL Pakistan, building the full user journey from onboarding to payment. Partnered with UI/UX and backend engineers to refine API payloads and reduce cold-start latency.

Android Kotlin Java Stripe Payment Gateways Google Maps API Integration Performance Optimization Google Play Store

Senior Android Developer

Bester Capital Media

Aug 2020 - Mar 2021 (7 months)

Built a multi-currency rate module, API integrations, UI and animations for the Chiragh app. Analyzed requirements, proposed solutions, and managed Google Play Store deployments.

Android Java Kotlin API Integration UI UX Animation Google Play Store

Lead Android Developer

ABHI Bank / GharPar

Jan 2020 - Jan 2021 (1 year)

Engineered secure digital banking and payment wallet solutions with end-to-end encryption, multi-layered security, and fraud prevention. Built location-based services, custom interactive filters, and multi-language UI support.

Android Kotlin Java Digital Banking Digital Wallets AES SSL Pinning ProGuard Fraud Prevention Location Based Services Multi Language

Senior Android Developer

AppsGenii Technologies

Oct 2017 - Aug 2020 (2 years 10 months)

Built financial transactions modules, live-rate currency conversion, and RESTful API integration for UOWN. Developed secure in-app payment modules and other features for IconInc, and held daily Scrum meetings with clients.

Android Java Kotlin MVVM REST APIs Financial Transactions Payment Module Scrum

Android Developer

Mania Studios

Aug 2014 - Nov 2017 (3 years 3 months)

Developed and maintained Android applications in Java/Kotlin, fixed bugs, and improved performance through testing and debugging. Participated in code reviews and release processes.

Android Java Kotlin Debugging Testing Code Review

Android Developer

Afiniti

Jun 2016 - Aug 2017 (1 year 2 months)

Developed performance-critical native Android code in C++ using the Android NDK for real-time audio processing, including acoustic echo cancellation and noise suppression. Built Bluetooth and Wi-Fi Direct connectivity for synchronized audio using TCP, UDP, RTP, and WebSockets.