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
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $42k
Billed in all: $227,208$227k
$7k in the last 6 months
Across 34 contracts
Earnings, last 30 days
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.
- Android App776 freelancers · 🇺🇸 #1Top 0.39%🇺🇸#1 of 33
- #57Stripe3,151 freelancers · 🇺🇸 #12Top 2%🇺🇸#12 of 272
- #89Supabase4,116 freelancers · 🇺🇸 #24Top 2%🇺🇸#24 of 289
- #95Front-End Development8,892 freelancers · 🇺🇸 #25Top 1%🇺🇸#25 of 703
- #109iOS Development6,533 freelancers · 🇺🇸 #31Top 2%🇺🇸#31 of 497
- #153Mobile App Development8,511 freelancers · 🇺🇸 #53Top 2%🇺🇸#53 of 620
- #156HTML18,716 freelancers · 🇺🇸 #54Top 0.83%🇺🇸#54 of 2,121
- #159React Native10,486 freelancers · 🇺🇸 #45Top 2%🇺🇸#45 of 697