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usama.dev

I connect mobile, web & AI into products that ship.

Muhammad Usama Nawaz — Full-Stack Developer building cross-platform apps with React Native, Next.js, and production AI integrations. 15+ apps shipped to the App Store and Google Play — including company products I built end-to-end as the sole developer.

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// what i build — request lifecycle
Mobile / Web
Supabase API
AI Model

React Native / Next.js clients call Supabase Edge Functions, which orchestrate OpenAI and Gemini calls and stream structured responses back to the user — the same pattern behind Talentra AI's interview engine and products like Soft Spot, PuffCount, and Sunlight.

15+
Apps shipped
4
Sole-dev company apps
20+
APIs integrated
2
Platforms — iOS & Android

I'm a mobile and full-stack engineer based in Islamabad, Pakistan. Over the past two years I've taken products from a blank Figma file to live App Store and Play Store listings — owning the mobile client, the backend, and increasingly, the AI layer that sits between them. That includes shipping company products end-to-end as the sole developer (Soft Spot, PuffCount, Wallsy, Sunlight), plus production work across tennis, fitness, medical, and marketplace apps. My recent focus: CV analysis pipelines, vision-based verification, streaming voice interviews, and structured-output APIs other engineers can build on.

Featured build

Talentra AI

An AI career-readiness and hiring platform — the largest system I've built end-to-end, across mobile, web, and backend.

Production · Live on App Store & Web

AI CV analysis & voice interview platform

Built the full stack for a two-sided hiring product: candidates upload a CV and get scored, gap-analyzed, and interview-ready; companies get matched candidates and a recruiting workspace.

  • CV upload → text extraction → OpenAI scoring, keyword-gap detection, and a personalized improvement plan
  • Streaming AI voice interviews with OpenAI TTS coaching, live transcription, and automated feedback
  • Guest mode with account conversion, Google OAuth, and candidate readiness profiles
  • Company-side job postings, candidate matching, messaging, and verification workflows
  • 15+ Supabase Edge Function APIs — upload-cv, analyze-cv, start-interview-stream, interview-tts, company-matches
React Native · ExpoNext.js 15SupabaseOpenAI APITypeScript
Visit talentraai.com ↗
Upload → Extract → Score
PDF/DOCX parsed and analyzed in seconds
Streaming voice interview
Real-time TTS + transcription + scoring
Two-sided marketplace
Candidate profiles matched to company jobs
Guest mode → account
Try before signup, then convert
Company builds

Sole developer on live products

Company apps I designed and built as the sole developer — Soft Spot is live on Google Play; PuffCount, Wallsy, and Sunlight are in internal testing / planned store release.

Couples Planner

Soft Spot

● Live — Google Play

A private shared space for couples — shared calendar, joint expenses, relationship health check-ins, shared goals, and an AI relationship coach. Partners link with an invite code so calendars, money, and goals stay in sync on both phones.

Company project — I was the sole developer: designed and built the app from scratch, set up backend and monetization, published builds on App Store Connect / Google Play Console, and submitted it for store review and release.

Full productPartner syncSubscriptionsAI coach
React Native · ExpoSupabaseRevenueCatTypeScript
View Android ↗
Habit reduction

PuffCount

○ Internal testing

Helps people cut back or quit vaping — one-tap puff logging, personalized taper plans with daily caps, mood/trigger check-ins, savings tracking, streaks, and an AI coach (Ask Puffy) for craving support.

Company project — I was the sole developer: designed and built the app from scratch, set up backend and monetization, published builds on App Store Connect / Google Play Console, and submitted it for store review and release.

End-to-endQuit plansMonetizationAI coach
ExpoReact NativeSupabase AuthCloud sync
Wallpaper discovery

Wallsy

○ Internal testing

Browse, like, and download full-resolution wallpapers. Users curate shareable collections, save HD images to their library, and unlock premium packs via Wallsy+ (subscriptions + IAP), with an ad-supported free tier.

Company project — I was the sole developer: designed and built the app from scratch, set up backend and monetization, published builds on App Store Connect / Google Play Console, and submitted it for store review and release.

Catalog UXDownloadsIAP / adsAuth
Expo · React NativeSupabaseAdsIn-app purchases
Accountability alarm

Sunlight

○ Internal testing

An accountability alarm that won’t stop until you go outside into natural daylight. Live camera + AI vision verify you’re outdoors (no gallery cheats). Includes streaks, morning photo journal, difficulty modes, and Pro subscriptions.

Company project — I was the sole developer: designed and built the app from scratch, set up backend and monetization, published builds on App Store Connect / Google Play Console, and submitted it for store review and release.

AI visionAlarmKitPaywallStore release
ExpoReact NativeSupabaseOpenAI VisionRevenueCat
Also shipped

Team & client production work

Contributions across tennis, fitness, medical, marketplace, social, and AI web products — UI, bugs, performance, QA, and new features.

Formerly Apeak Tennis · Production

Winning Habits

● Live — App Store

Tennis goals & mental training app (Winning Habits, formerly Apeak Tennis). Worked on UI improvements, bug fixes, and performance enhancements. Also contributed to related apps: Superior Parent and Superior Performance.

UI WorkBug FixingPerformanceAdd Features
React Native (Expo)XcodeAndroid Studio
View iOS ↗
Fitness app

LifeLine

○ In Development

Fitness app with ongoing UI improvements, Android bug fixing, and testing support across the release cycle.

UI WorkBug FixingQA Testing
React NativeCursor AIXcode
Demo video 1 ↗Demo video 2 ↗
AI price comparison

Josepha

● Live — iOS & Android

Price comparison app that finds the cheapest product from the market. Worked on UI updates, feature implementation, testing, optimization, and refactoring.

UI WorkBug FixingAI Usage (Cursor)QA Testing
React NativeCursor AI
View Android ↗View iOS ↗
Medical / EMR assistant

Nestmed

● Live — Android

Medical app for patient records, appointment booking, and AI responses. Owned Android UI fixes, critical bug fixes, and testing recordings — using Cursor AI for complex technical issues.

UI WorkBug FixingAI Usage (Cursor)QA TestingCritical bugs
React NativeCursor AIAndroid Studio
View Android ↗
Music recognition · Web

FindMusic

● Live — Web

Next.js web application that extracts and recognizes background music from videos, links, uploads, or voice — full frontend UI completed end-to-end.

UI WorkAdd Features
Next.js
Visit site ↗
Commerce demo

Shopzy

○ Demo

Shopping / marketplace product demo — UI flows and feature work captured in a walkthrough video.

UI WorkAdd Features
React Native
Watch demo ↗
Farm marketplace

Organised

● Live — iOS & Android

Production marketplace app for organic farm products — pixel-perfect UI from Figma, backend APIs, and reply-to-reply messaging.

UI WorkAPIsMessaging
React NativeTypeScriptREST APIs
View Android ↗View iOS ↗
Social

Palate

○ Internal testing

Cross-platform social app — auth, real-time chat, groups, and engagement features, accelerated with AI-assisted tooling.

Realtime chatAuthEngagement
React NativeFirebasePush Notifications
Multi-model AI

AIEH

● Live

Web platform integrating OpenAI GPT, Gemini, and Perplexity into one interface — reusable components, responsive by default.

UI WorkAI Integration
Next.jsOpenAIGemini API
Step counter · Friends

Stompers

● Live — App Store

Social fitness and step-tracking app — contributed new UI features, resolved production issues, and improved performance.

UI WorkBug FixingPerformance
React NativeTypeScriptREST APIs
View iOS ↗
Toolbox

What I build with

The pieces I reach for most, grouped by where they sit in the stack.

01

Mobile

React NativeExpo RouterReact NavigationNative iOS/Android
02

Web

Next.js 15React 19SSR/SSGTechnical SEO
03

Backend

SupabaseFirebaseEdge FunctionsJWT / OAuth
04

AI Integration

OpenAI APIStreamingTTS / STTGemini API
05

Growth & Payments

RevenueCatOneSignalAppsFlyerStripe
06

Tooling

TypeScriptGitVercelApp Store Connect
Career so far

Experience

From QA foundations to shipping company products end-to-end as the sole developer and owning full mobile/web stacks in production.

React Native & Next.js Developer
Aug 2024 — Present
Gitrex Technologies, Islamabad

Own delivery across production mobile and web apps — from Figma-to-store builds to AI features, store releases, and post-launch maintenance for company and client products. Often the sole developer on a product from architecture through store submission.

  • Developed and maintained 15+ production-ready mobile and web applications across hiring, fitness, tennis, medical, and marketplace domains
  • Sole developer on company products Soft Spot, PuffCount, Wallsy, and Sunlight — architecture, auth/sync, AI features, RevenueCat monetization, and App Store / Play Store submission
  • Soft Spot (couples planner), PuffCount (habit reduction + AI coach), Wallsy (wallpapers + IAP/ads), Sunlight (daylight alarm + OpenAI Vision verification)
  • Converted 30+ Figma designs into pixel-perfect, responsive screens on iOS and Android (Expo / React Native) and Next.js web
  • Integrated 20+ REST APIs and third-party SDKs — Firebase, Supabase, OpenAI, Gemini, RevenueCat, push, and analytics
  • Built and shipped AI product surfaces: CV scoring pipelines, streaming voice interviews, vision verification, and structured coach responses
  • Led UI polish, critical bug fixing, performance work, and QA support on live apps including Winning Habits, Nestmed, Josepha, and LifeLine
  • Managed TestFlight / internal testing, App Store Connect & Play Console uploads, production deployments, and post-launch maintenance
  • Used AI-assisted tooling (Cursor) to accelerate complex debugging, refactors, and feature delivery without sacrificing code quality
React Native Intern
Sep 2023 — Nov 2023
Reactive Space, Islamabad

First professional mobile role — learned production React Native workflows, device QA, and collaborative feature delivery with seniors.

  • Fixed UI and responsive layout issues across Android and iOS device sizes and OS versions
  • Collaborated with senior developers to implement new screens and iterate on existing features from design specs
  • Debugged navigation, styling, and platform-specific bugs; practiced clean PR workflows and code review feedback
  • Built foundational habits around TypeScript, component structure, and shipping mobile builds for internal testing
SQA Intern
Jul 2023 — Aug 2023
SkyElectric Pvt Ltd, Islamabad

Grounded my engineering practice in quality — structured test cases, automation, and clear defect reporting before moving into full-time product development.

  • Performed manual and automated testing using Selenium (Java, JUnit, Page Object Model)
  • Created structured test cases, regression suites, and QA reports for engineering and product stakeholders
  • Identified UI and functional defects, reproduced edge cases, and tracked issues through to verification
  • Learned release-quality discipline that still informs how I ship mobile and AI features today
B.S. Computer Science
Sep 2020 — Jul 2024
Capital University of Science and Technology, Islamabad

Formal CS foundation alongside early industry work — algorithms, software engineering, and hands-on projects that led into React Native and full-stack product roles.

  • Coursework covering programming, data structures, databases, and software engineering practices
  • Balanced degree completion with internships and production app work — graduating into a full-time React Native / Next.js role
Let's work together

Building something with React Native, Next.js, or AI? Let's talk.

Open to full-time roles, contract work, and freelance projects — on-site, hybrid, or remote.

osamanawaz123.on@gmail.comLinkedIn ↗GitHub ↗+92 304 1661422