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Oscar A.
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Oscar A.

Full-Stack Dev | Next.js | React | Supabase | Node.js | MVP Specialist

Former Senior Developer at Angel Studios (millions of users). I build full-stack web and mobile apps with Next.js, React Native (Expo), Supabase, Node.js, and Stripe. I specialize in solo projects — owning everything from frontend to deployment. ⚡ Next.js Development: I build fast, SEO-optimized web applications with Next.js, TypeScript, and Tailwind — leveraging SSR/SSG for performance and search visibility. 📱 React Native & Expo: I create cross-platform mobile apps from a single codebase that deploy to iOS App Store, Google Play, and web. 🗄️ Supabase & Backend: Full backend development with Supabase (auth, storage, realtime, edge functions), Node.js, Express, GraphQL, and tRPC. 💳 Third-Party Integrations: Seamless integration with Stripe, Clerk, Twilio, SendGrid, and other APIs to power your app's core features. 🚀 Solo Full-Stack Ownership: I manage entire projects end-to-end — frontend, backend, integrations, CI/CD, and deployment to Vercel, Digital Ocean, or your preferred platform. If you're looking for a developer who can own your project from concept to launch, let's talk. Skills: ✔️ Next.js & React Development ✔️ React Native & Expo (iOS + Android) ✔️ Supabase, PostgreSQL, Prisma ORM ✔️ Node.js, Express, GraphQL, tRPC ✔️ TypeScript & Tailwind CSS ✔️ Stripe, Clerk, Twilio, SendGrid Integration ✔️ SEO & Core Web Vitals Optimization ✔️ CI/CD & Deployment (Vercel, Coolify, Digital Ocean) ✔️ App Store & Play Store Publishing ✔️ AI Development

🇺🇸Lehi, United States$90/hr100% JSS4.87 (19)Since Feb 2019
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Earnings and projects

MRR
$7k

Last 6 months ÷ 6

World#2,865 / 412k
🇺🇸Country#1,127 / 62.1k
Revenue, last 30 days
$257

Last 6 months: $42k

World#77,404 / 412k
🇺🇸Country#9,879 / 62.1k
Total earnings
$218k

Billed in all: $227k

World#13,400 / 412k
🇺🇸Country#3,352 / 62.1k
Per project
$8.1k

$7k in the last 6 months

World#20,706 / 412k
🇺🇸Country#3,440 / 62.1k
Projects, last 6 months
6
50% fixed50% hourly
World#34,405 / 412k
🇺🇸Country#4,906 / 62.1k
Projects in all
27

Across 34 contracts

65% fixed35% hourly
World#106,301 / 412k
🇺🇸Country#15,735 / 62.1k

Earnings, last 30 days

$227k+$257 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$226.8k$227.0k$227.2k$227.4kOct 8Oct 23Nov 7

Skill rankings: Top 0.39% in Android App

Top 1% in 2 of 15 skills, ranked by MRR among everyone on Upwork with the skill.

  1. 3Android App776 freelancers · 🇺🇸 #1Top 0.39%
  2. #57Stripe3,151 freelancers · 🇺🇸 #12Top 2%
  3. #89Supabase4,116 freelancers · 🇺🇸 #24Top 2%
  4. #95Front-End Development8,892 freelancers · 🇺🇸 #25Top 1%
  5. #109iOS Development6,533 freelancers · 🇺🇸 #31Top 2%
  6. #153Mobile App Development8,511 freelancers · 🇺🇸 #53Top 2%
  7. #156HTML18,716 freelancers · 🇺🇸 #54Top 0.83%
  8. #159React Native10,486 freelancers · 🇺🇸 #45Top 2%