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Mustafa G.
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Mustafa G.

Product Engineer | SaaS, Stripe, Payments, APIs & AI | React/Node.js

⚡ SAAS | AI INTEGRATION | STRIPE | FINTECH | REACT | NODE.JS | MOBILE APPS | WEB DEVELOPMENT If your SaaS platform is losing revenue due to failed payments, broken billing logic, or an AI integration that doesn't actually work in production I can fix that. I build and ship production-ready SaaS platforms, AI-powered tools, mobile apps, and high-performance websites that handle real users and real money. Not demos. Not prototypes. 🎯 Where I make the biggest impact: 🔴 Stripe billing that breaks under load or edge cases 🔴 AI features that fail silently in production 🔴 SaaS platforms that work locally but fall apart at scale 🔴 Mobile apps that need to ship to both App Store and Play Store 🔴 Websites that look good but don't convert or perform 🔴 Webhook handling that misses events and causes revenue loss 🚀 What I deliver: 💎 End-to-end SaaS platforms with subscription billing and AI integrations 💎 Stripe Connect, Billing, and webhook architecture built to scale 💎 Claude/OpenAI integrations that actually work in production 💎 React Native mobile apps published to both stores 💎 Fast, modern websites and web apps built for performance and conversions 💎 Clean, documented code your team can maintain after handoff With 8 years of hands-on experience, I've seen what breaks at scale, what kills conversions, and what actually moves the needle for a growing business. 💬 Send me a message and let's talk about what you're building.

🇵🇰Karachi, Pakistan$15/hr100% JSS4.87 (26)Since Sep 2021

Earnings and projects

MRR
$3.1k

Last 6 months ÷ 6

World#12,130 / 412k
🇵🇰Country#1,302 / 52.9k
Revenue, last 30 days
$2.9k

Last 6 months: $19k

World#13,394 / 412k
🇵🇰Country#1,493 / 52.9k
Total earnings
$34k

Billed in all: $34k

World#102,478 / 412k
🇵🇰Country#9,325 / 52.9k
Per project
$839

$1k in the last 6 months

World#137,760 / 412k
🇵🇰Country#12,985 / 52.9k
Projects, last 6 months
18
94% fixed6% hourly
World#7,230 / 412k
🇵🇰Country#1,717 / 52.9k
Projects in all
40
98% fixed2% hourly
World#75,668 / 412k
🇵🇰Country#12,147 / 52.9k

Earnings, last 30 days

$33.7k+$2.9k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$30k$32k$34kOct 8Oct 23Nov 7

Skill rankings: Top 3% in WordPress

Ranked by MRR among everyone on Upwork with the skill.

  1. #18Plugin Customization549 freelancers · 🇵🇰 #3Top 3%
  2. #36Stripe API698 freelancers · 🇵🇰 #11Top 5%
  3. #93AI Bot1,765 freelancers · 🇵🇰 #21Top 5%
  4. #125AI Model Integration1,618 freelancers · 🇵🇰 #32Top 8%
  5. #228Stripe3,151 freelancers · 🇵🇰 #63Top 7%
  6. #260Tailwind CSS6,978 freelancers · 🇵🇰 #33Top 4%
  7. #350Angular6,816 freelancers · 🇵🇰 #38Top 5%
  8. #447Laravel12,549 freelancers · 🇵🇰 #57Top 4%