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Hamza I.
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Hamza I.

AI Agent Developer | Full-Stack AI Apps | Voice AI & Chatbots

I build production-ready AI products from idea to launch, with a focus on mobile apps, web dashboards, backend systems, and AI voice automation. I’ve shipped 20+ published apps serving 1M+ active users, and I’ve built complete SaaS products solo end-to-end. If you need more than a demo, I can help you create a real system that works for users, operations, and growth. I develop AI-powered mobile apps in Flutter and React Native, AI voice agents and phone receptionists with booking and call handling, React/Next.js dashboards, and full-stack backends using Supabase, Firebase, Node.js, and PostgreSQL. I also handle Stripe subscriptions, RevenueCat billing, API integrations, deployment, and app store submission. Clients hire me when they want one person to own the full build: product architecture, AI integration, database design, UI, backend logic, billing, and launch. I’m used to taking projects from scratch or stepping into existing codebases to fix architecture, reduce risk, and get the product shipped. Recent work includes an AI phone receptionist SaaS with Retell AI, calendar sync, transcripts, and bilingual support; a social app rescued from a stalled build and launched on both stores; and AI-powered health and learning apps. If you’re building an AI app, voice agent, or SaaS product, message me with your idea, and I’ll tell you the best way to approach it. EXPERTISE AI Engineer | AI App Development | AI Integration | AI Mobile App | OpenAI API | ChatGPT Integration | AI Receptionist | AI Voice Agent | AI Phone Agent | Retell AI Developer | Voice AI Developer | AI Call Automation | Flutter Developer | React Native Developer | Mobile App Development | iOS App Development | Android App Development | MVP Development | SaaS Development | Full-Stack Developer | Firebase | Supabase | Node.js | PostgreSQL | Stripe | RevenueCat | React | Next.js

🇵🇰Islamabad, Pakistan$50/hr100% JSS5.00 (17)Since Apr 2018
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Earnings and projects

MRR
$2.5k

Last 6 months ÷ 6

World#16,453 / 412k
🇵🇰Country#1,826 / 52.9k
Revenue, last 30 days
$5.5k

Last 6 months: $15k

World#4,699 / 412k
🇵🇰Country#449 / 52.9k
Total earnings
$50k

Billed in all: $50k

World#76,064 / 412k
🇵🇰Country#6,515 / 52.9k
Per project
$2.1k

$2.5k in the last 6 months

World#74,621 / 412k
🇵🇰Country#5,665 / 52.9k
Projects, last 6 months
6
100% fixed0% hourly
World#34,405 / 412k
🇵🇰Country#7,556 / 52.9k
Projects in all
24

Across 26 contracts

88% fixed12% hourly
World#116,630 / 412k
🇵🇰Country#19,248 / 52.9k

Earnings, last 30 days

$50.3k+$5.5k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$40k$45k$50k$55kOct 8Oct 23Nov 7

Skill rankings: Top 5% in Flutter

Ranked by MRR among everyone on Upwork with the skill.

  1. #49Mobile App Redesign693 freelancers · 🇵🇰 #14Top 7%
  2. #60ChatGPT API Integration984 freelancers · 🇵🇰 #24Top 6%
  3. #93Hybrid App Development1,431 freelancers · 🇵🇰 #29Top 6%
  4. #246iOS3,908 freelancers · 🇵🇰 #44Top 6%
  5. #270Android4,975 freelancers · 🇵🇰 #47Top 5%
  6. #296Stripe3,151 freelancers · 🇵🇰 #74Top 9%
  7. #378Firebase6,978 freelancers · 🇵🇰 #86Top 5%
  8. #394Android App Development6,395 freelancers · 🇵🇰 #83Top 6%