Mobile apps that hold up in production.

About

Hi, I'm Umar

A mobile developer who likes owning a feature from the first requirements call through to the store release.

Skills

The toolbox

Native when it matters, cross-platform when it makes sense. Here's what I use day to day.

Experience

Where I've worked

Seven roles across six companies, all in Lahore, newest first.

1. Senior Software Engineer

   Jul 2025 - Present

   Xavor Corporation

   • Develop and enhance mobile apps for Guitar Center, covering customer-facing commerce and internal store operations.
   • Build and maintain Flutter and native features with a focus on scalability, usability, code quality and solid backend integration.
   • Work with product managers, designers, QA and client stakeholders to refine requirements and ship production-ready features.
   • Contribute to inventory and store-associate workflows: scanning, operational tools, API-driven data and device integrations.

   FlutterNative mobileScanningREST APIs

2. Senior Software Engineer (Android)

   Aug 2024 - Jul 2025

   Techverx

   • Built and optimized Android POS apps for payment processing, inventory management, order workflows and customer data tracking.
   • Led Android development for an OTT streaming platform with ExoPlayer, adaptive bitrate playback, HLS/DASH/RTMP and Widevine DRM.
   • Turned business requirements into scalable architecture and reusable components in Kotlin and Java.
   • Worked directly with clients to clarify requirements, solve technical challenges and improve performance across devices.

   KotlinJavaPOSExoPlayerWidevine DRM

3. Senior Mobile Application Developer

   Aug 2022 - Aug 2024

   Xavor Corporation

   • Delivered Android apps in Kotlin/Java and cross-platform products in Flutter and React Native.
   • Led mobile projects from requirement analysis through implementation and release.
   • Integrated REST APIs, authentication, cloud-backed data and third-party SDKs, and tracked down performance and reliability issues.
   • Partnered with clients to refine product ideas and turn functional requirements into production apps.

   KotlinJavaFlutterReact NativeTypeScript

4. Senior Flutter Developer

   Nov 2021 - Jul 2022

   Revglue.com

   • Led development of user-focused Flutter apps and maintained existing Android apps in Java and Kotlin.
   • Guided developers, set implementation priorities and kept delivery on track against project goals.

   FlutterJavaKotlinTeam lead

5. Mobile Application Developer

   Jan 2020 - Nov 2021

   HighApp Solutions

   • Built Flutter and native Android apps with APIs, authentication, notifications and data-driven features.
   • Connected mobile clients to PHP backend APIs and MySQL-backed workflows.
   • Planned and tracked delivery in JIRA while leading development and resolving technical issues across projects.

   FlutterAndroidPHP APIsMySQLJIRA

6. Android Developer

   May 2019 - Jan 2020

   KTechZ

   • Contributed to the official DOCE Sweets & Bakers Android app in Kotlin, letting customers browse products and place orders.
   • Worked with developers and stakeholders on implementation, testing and release readiness.

   KotlinAndroid

7. Android Developer Intern

   Oct 2018 - Apr 2019

   NetSol

   • Contributed to BeeList, an Android app integrated with IoT devices for on-site marketing, across planning, coding, testing and device integration.

   AndroidIoT

Projects

Selected work

Apps I've built or led. Public ones are linked; the rest are client builds without a public listing.

TAVRTalk

React Native · Medical

Edwards Lifesciences' community app where Valve Clinical Coordinators trade questions, find TAVR resources and reach peers. Real-time discussions, secure sign-in and role-based access.

Google Play

Muslimeen: Athan, Quran, Qibla

Flutter · Lifestyle

Ad-free Islamic companion with prayer times, configurable adhan alerts, Quran reading and audio, and Qibla direction from the device sensors.

Google Play

AppTak Online Shopping

Shopping

Online marketplace from Muller & Phipps Pakistan for electronics, home appliances, phones and groceries, with cash on delivery or online payment.

Google Play

Clique: Friends Group Chat

Social

A private group chat for friend groups, clubs and teams, built around a daily conversation prompt, streaks and planning events together.

Google Play

Alliance TrueCare

Health & fitness

Remote patient monitoring companion that pairs over Bluetooth with blood pressure monitors, glucometers, pulse oximeters, scales and thermometers so patients and care teams can track vitals.

Google Play

FP

Friday POS

Android

Android POS platform with payments, inventory and order workflows, Firebase/Pusher real-time sync, Square payments, offline mode and dynamic menus. More efficient state management cut unnecessary API traffic by 30%.

Website

OT

OTT Streaming Platform

Android

Streaming app on ExoPlayer with HLS, DASH and RTMP: adaptive playback, Widevine/PlayReady DRM, caching, authentication, recommendations and offline downloads.

Client build

C3

Customer 360

Flutter

Salesforce-connected app giving sales and service teams real-time customer data, with role-based access, caching and offline use.

Client build

TM

Task Manager

Android · Kotlin · Compose

An offline task manager built with Jetpack Compose, Material 3 and Room: reminders, repeating tasks, checklists and sections.

Open sourceGitHub →

Open source

Flutter packages on pub.dev

Native-quality polish for Flutter apps, published under the verified publisher umarghaffar.is-a.dev. All MIT licensed, with runnable examples and no native code to set up.

scroll_edge_blur

v0.1.1

Progressive, iOS style edge blur for scroll views, toolbars and headers. A GPU shader runs on the backdrop with no snapshots, so it stays cheap while scrolling.

blurshaderglassmorphism

flutter pub add scroll_edge_blurCopy

pub.dev GitHub Project site

liquid_glass_navigation

v0.1.1

iOS 26 style Liquid Glass navigation: a floating glass bottom bar, a glass side rail and an adaptive scaffold that switches between them, with a stretchy, draggable pill.

navigationbottom barglassmorphism

flutter pub add liquid_glass_navigationCopy

pub.dev GitHub

smart_signature

v0.1.0

A signature field that improves what you draw, entirely on-device: it removes jitter, pen hooks and stray marks, adds pen-like ink and levels the baseline.

signaturehandwritingink

flutter pub add smart_signatureCopy

pub.dev GitHub

Education

Education & languages

A BS with a computer vision final project, followed by an MPhil, both in computer science.

I build mobile apps across Android, iOS and cross-platform, and I care about the parts users never see: architecture, offline behaviour, secure auth and a release process that runs smoothly.