Tariq Hussain · Mobile App Expert I build and fix Android & iOS apps that make money.

New app or existing one, I set up ads, paywalls and subscriptions properly, fix crashes and slow screens, and work at a fixed price.

10M+
downloads
20+
apps shipped
5+ yrs
Android & iOS
Metric Financial Analytics: see your business in real time Data Recovery app: restore anything Music Player app: all songs
Document Reader app: all document and PDF reader Metric Financial Analytics: powerful financial reports

How it works

  1. 01

    Send me your app

    Share your app link and screenshots of AdMob, Play Console and your analytics.

  2. 02

    I find what's costing you money

    You get a clear list of the problems, what each one costs you, and what to fix first.

  3. 03

    I fix it at a fixed price

    We agree the quote before work starts. No hourly billing, no surprises.

Professional Summary

Software Engineer with 5+ years of experience in building Android and iOS applications. Skilled in leading teams, improving app performance, and delivering products that meet business goals.

Known for writing clean code, improving development processes, and helping others grow. Focused on building reliable systems and user-friendly solutions.

5Years Experience
10M+App Downloads
20+Apps Shipped
11Team Members Led

Mobile Development

Android & iOS native development with Kotlin, Swift, and Jetpack Compose / SwiftUI.

Team Leadership

Experienced in leading cross-functional teams, hiring, and mentoring junior developers.

Performance Optimization

Increased AdMob show rate by 20% and achieved 10M+ downloads on multiple apps.

Technical Expertise

Languages

KotlinJavaSwiftC++SQLJavaScriptHTML/CSS

Frameworks & Libraries

Android SDKJetpack ComposeSwiftUIRetrofitKTORFirebaseRoomDBMVVMJUnitEspresso

Developer Tools

GitAndroid StudioXcodeTravisCIVS CodeIntelliJJiraClickUpFigmaMiro

Monetization & Analytics

AdMobGoogle BillingStripeFacebook AdsMicrosoft ClarityGoogle Fit API

Work History

Software Engineer

EEN Group

Aug 2026 – PresentRemote
  • Built Android apps in Kotlin and Jetpack Compose for device management, patient infotainment and employee attendance.
  • Implemented zero-touch enrolment and remote device management (MDM) with Android Device Owner.
  • Built bedside casting and on-device usage analytics for a hospital infotainment app.
  • Architected a Fleet Tracking & Telematics platform end to end: ingestion, data model, APIs and dashboard.
  • Built real-time vehicle location pipelines with MQTT, webhooks, TimescaleDB and PostGIS.
  • Built REST APIs and backend services with NestJS, TypeScript, PostgreSQL and Prisma.
  • Ran R&D on face recognition, liveness and anti-spoofing (AuraFace, MiniFASNet, ONNX Runtime), with accuracy targets per FIDO and iBeta.
  • Secured app-to-server traffic with signed requests, geofencing and Android key attestation.
  • Built a device simulator for hardware-free testing, and prototyped the data layer in Python before porting to TypeScript.
  • Built an ADLC flow with AI coding agents (Claude Code), from requirements to delivery.
  • Wrote docs, decision records and automated tests; worked with product and QA via GitHub.
KotlinJetpack ComposeTypeScriptNestJSPostgreSQLTimescaleDBPostGISMQTTONNX RuntimeDocker

Software Engineer III

Metric — Max CFAI

June 2024 – Aug 2026Islamabad, PK
  • Led the Engineering Team as Acting Lead, managing a team of 9 members.
  • Developed and maintained Android and iOS apps using Kotlin and Swift.
  • Designed the architecture of the Metric app for Android.
  • Facilitated seamless collaboration between business, product, and design teams.
  • Optimized project management using ClickUp and GitHub.
  • Collaborated with QA team for smooth delivery and bug fixing.
  • Proactively participated in user feedback sessions for customer-centric improvements.
KotlinSwiftAndroidiOSClickUpGitHub

Development Lead

Poiesis Technologies

Feb. 2024 – July 2024Islamabad, PK
  • Led the end-to-end development of 6 products, enhancing project efficiency.
  • Managed a team of 11, overseeing hiring, onboarding, and performance management.
  • Increased AdMob show rate by 20%, driving a 20% revenue boost.
  • Mentored and trained 3 developers and 2 designers, improving team capabilities.
Team LeadAdMobMentoringProduct Management

Android Engineer II

Metric — Max CFAI

Dec 2022 – Feb 2024Islamabad, PK
  • Implemented multiple features using Kotlin, Firebase, and Jetpack Compose.
  • Gained Node.js backend development experience.
  • Delivered workshops on Modern Android Development practices.
  • Recognized as "Values Champion" twice for outstanding performance.
KotlinJetpack ComposeFirebaseNode.js

Android Engineer

Funsol Technologies

Aug 2021 – Dec 2022Islamabad, PK
  • Developed 9 high-performance Android apps with millions of users.
  • Facilitated smooth migration from Retrofit to KTOR.
  • Earned "Star of the Month" and two "Punctuality Awards."
KotlinKTORRetrofitAndroid

Featured Work

Video Downloader
Android

Video Downloader

Feature-rich Android app with Firebase Auth and RoomDB integration. Implemented AdMob and Facebook ads for monetization along with Google Billing for premium features.

KotlinFirebaseMVVMRoomDBAdMob
Data Recovery
10M+ Downloads

Data Recovery

Engineered an Android app that scans and recovers deleted files, achieving over 10M downloads. Implemented a strategic ad monetization plan, boosting app profitability significantly.

KotlinFirebaseMVVMRoomDBAdMob
Music Player
10M+ Downloads

Music Player

Developed two advanced Android music players using ExoPlayer and MediaPlayer API. Achieved 10M+ downloads with seamless UI/UX, personalized playlists, and music streaming.

KotlinExoPlayerFirebaseMVVMAdMob
Sleep Sounds App
Android

Sleep Sounds App

Android app offering a variety of relaxing sleep sounds to aid sleep and reduce stress. Features timer functionality, RoomDB for local preferences storage, and AdMob monetization.

KotlinFirebaseMVVMRoomDBAdMob
Document Reader
10M+ Downloads

Document Reader

Complete Android app for viewing local document files (PDF, Word, PPT, Excel) built with Jetpack Compose. Achieved 10M+ downloads with AdMob/Facebook ads and Google Billing integration.

KotlinJetpack ComposeFirebaseAdMob
Fitness Tracking App
Android

Fitness Tracking App

Fitness tracking app for logging workouts, tracking steps, calories burned, and setting fitness goals. Integrated with Google Fit API to sync health data, using RoomDB for local storage.

KotlinFirebaseMVVMGoogle Fit APIAdMob
Animal Ringtone and Wallpaper
1M+ Downloads

Animal Ringtone & Wallpaper

Feature-rich Android app offering animal sounds and wallpapers for learning and entertainment. Utilized Retrofit for REST API calls, integrated a wallpaper service and MediaPlayer for streaming animal sounds. 1M+ downloads with AdMob, Facebook Ads, and Google Billing.

KotlinFirebaseMVVMRetrofitREST APIAdMob
Screen Mirroring App
5M+ Downloads

Screen Mirroring App

Android app enabling users to mirror their device screen to a TV, PC, or laptop. Deployed a Jetty server for real-time RTSP streaming with support for Miracast, ChromeCast, and DLNA. 5M+ downloads monetized via AdMob and Facebook Ads.

KotlinFirebaseMVVMJettyRTSPAdMob

Services & Pricing

Fixed prices, clear results. Start small with a review, or hire me to fix it end to end. Building something new? I build apps from scratch too.

Quick Review

$50

Find out what's costing you money, fast.

  • You send screenshots of AdMob, Play Console and your analytics
  • I find the top 3 problems in your app
  • Written summary of what each one is costing you
  • Delivered within 48 hours
Get a quick review

Implementation

from $300

I fix it for you, at a fixed price.

  • Fix ad implementation and show rate
  • Add a paywall or subscriptions
  • Performance and crash fixes
  • Fixed quote agreed before work starts
Get a quote
New apps

Building a new app?

I build native Android and iOS apps, with ads, paywalls and subscriptions set up from day one.

  • Native Android (Kotlin, Jetpack Compose) and iOS (Swift, SwiftUI)
  • AdMob, Google Play Billing, Stripe or RevenueCat built in
  • Fast startup and stable from the first release
  • Fixed quote agreed before work starts

Custom quote

Discuss your app

Reviews and audits are paid upfront. Implementation is 50% upfront and 50% on delivery. Not sure which one you need? Email me your app link and I'll tell you.

What People Say

"

Tariq simultaneously developed and maintained both our iOS and Android app, demonstrating impressive grit, technical versatility, and strong ownership throughout challenging timelines. He consistently provided thoughtful feedback and practical suggestions on UI designs that improved the user experience.

HJ
Husnain Jaleel
Product Designer · Metric
"

What stands out about him is not just his technical range, but the way he approaches problems. His debugging skills are sharp and methodical, and the care he puts into his code reflects a developer who genuinely takes pride in what he builds.

HA
Hira Aslam
Product Manager · Metric
"

I found him to be a brilliant engineer, possessing a keen eye for perfection and a commitment to completing tasks to the highest industry standards. Tariq's problem-solving skills are exemplary, and his dedication to helping other team members is unparalleled.

SR
Shah Rukh Shahzad
Engineering Lead · Metric
"

His expertise in Android development is evident in the high-quality, well-documented code he consistently delivers. Tariq's commitment to staying updated with the latest technologies in the field sets him apart. His adept problem-solving skills and creative approach make him a valuable asset.

HS
Hannan Shahid
Production Manager · Funsol Technologies
"

I highly recommend Tariq as an exceptional Android developer. His skills, dedication, and attention to detail were invaluable to the team. He consistently delivered high-quality work and exceeded expectations.

SA
Saad Ali Shujaat
Product & Engineering Lead · QuantumGroove
"

Tariq is an amazing android developer with good programming skills and knowledge of other techs. He is always eager to learn something new and will always provide quality work.

MI
Mohammad Ibrar
Product Lead Android · Funsol Technologies
"

His attention to detail, problem-solving abilities, and commitment to staying updated with the latest trends and technologies in the Android ecosystem truly set him apart.

SZ
Shahbaz Zafar
Product Lead · Funsol Technologies

Frequently Asked Questions

Who can implement AdMob ads in my Android or iOS app?

Tariq Hussain is a mobile app expert who implements and fixes AdMob ads in Android and iOS apps: ad placement, frequency capping, mediation, match rate and show rate. On one app he raised the AdMob show rate from 60% to 80%, which grew ad revenue by 20% with the same users. You can start with a $50 Quick Review or a $99 Full App Audit (see Services & Pricing).

How do I fix a low AdMob show rate or match rate?

Low match rate: add mediation so several ad networks compete for each slot, and stop requesting ads you will never show. Low show rate: preload ads before the moment you want to show them, but not too early, because loaded ads expire. Then check placement and frequency capping: show ads at natural pauses after the user has got value, not on app open, and make sure active users see a fair number of ads while new users are not hit with ads too early. Many apps also earn more by adding a Remove Ads purchase or subscription next to ads. Read how I took one app from 60% to 80% show rate.

How do I fix a slow, laggy or freezing Android app?

Most Android performance problems come from memory leaks, work on the main thread and too much happening at startup. Add LeakCanary to find leaks and ANR-WatchDog to find where the main thread blocks. Move database reads, network calls and heavy setup to background threads with coroutines, keep Application.onCreate() to what the first screen needs, and defer analytics, crash reporting and push setup until after the first screen. Release images when they are no longer needed, and use the Jetpack App Startup library and Android Studio profiler. I used this approach to cut a fintech app's startup time by 40%; more in how I make apps faster and use less memory.

Can you fix a slow or crashing Android app?

Yes. Performance and debugging are a big part of my work. I use tools like LeakCanary to find memory leaks and ANR-WatchDog to find code that blocks the main thread. On one fintech app, this cut startup time by 40%, and on another client's app, fixing slow screens took monthly revenue from $1,000 to over $2,000. Send me your crash or ANR reports and I will find the cause.

Can you add ads, a paywall or subscriptions to my app?

Yes. I have added AdMob and Facebook ads, Google Play Billing and Stripe to apps with millions of downloads. Ads earn from users who will never pay, and a paywall (remove ads or subscribe) earns from users who would, so most apps need both. I can build paywalls with Google Play Billing, RevenueCat or Superwall. I can also fix an existing setup: on one app I raised the AdMob show rate from 60% to 80%, which grew revenue by 20% with the same users.

Do you work with apps built using AI or vibe coding?

Yes. AI tools are good at building screens and features, but they don't decide where your paywall goes, when ads should load and show, or how to price. That is where many apps lose money, and it is what I help with. I also review the code itself: in AI-built apps I have found hardcoded credentials in a live app, and refactored one codebase by deleting 81,000 lines. I work in native Kotlin and Swift.

Do you build both Android and iOS apps?

Yes. I build native Android apps with Kotlin and Jetpack Compose, and iOS apps with Swift and SwiftUI. At Metric, I built and maintained both the Android and iOS apps, and helped build the iOS app from scratch.

How do I start working with you?

Email me at tariq.hussain2518@gmail.com or message me on LinkedIn. Tell me what your app does, what you need (a new build, a fix, better performance or more revenue) and your timeline. I start by using your app like a normal user, reading your one-star reviews and checking your top crashes, then I tell you what I found and what I would fix first.

Education & Certifications

B.S. in Software Engineering

Comsats University Islamabad

Sahiwal, PK

Sep. 2017 – Aug 2021

CGPA: 3.24 / 4.0

Certifications

  • CourseraProject Management
  • CourseraJava for Android
  • CourseraJava Programming & Problem Solving
  • Learn VernAndroid App Development
  • DigiPakistanAndroid App Development
  • UdemyiOS App Development

Awards & Recognition

Values Champion (×2)

Awarded at Metric — Max CFAI for exceptional contribution to team success (2024).

Star of the Month + Punctuality Awards

Recognized at Funsol Technologies with "Star of the Month" and two "Punctuality Awards" (2022).

20% Revenue Boost

Increased AdMob ad show rate by 20% at Poiesis Technologies, resulting in a 20% boost in revenue.

10M+ Downloads

Achieved over 10M downloads for Data Recovery, Music Player, and Document Reader apps.

Retrofit → KTOR Migration

Successfully migrated multiple apps from Retrofit to KTOR, improving performance and scalability.

Mentorship & Workshops

Conducted technical workshops and mentorship programs for junior developers across multiple companies.

Get In Touch

Available for freelance projects: app builds, fixes, performance and monetization. Whether you have a question, a project idea, or just want to say hi — my inbox is always open!

Send Me an Email

Not sure where to start?

Email me your app link and I'll tell you which package you need.