Oscar A.
FreelancerTop Rated PlusFull-Stack Dev | Next.js | React | Supabase | Node.js | MVP Specialist
Member since 2019 · 100% Job Success
View on Upwork
WorldTop 0.2%
United StatesTop 0.77%
Node.jsTop 0.44%
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upworkrank#114in Node.js · Top 0.44%Share this rank
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$13k
MRR
est. monthly
#750
World rank
of 372,170
$215k
Lifetime earnings
since 2019
33
Total jobs
completed
About
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
Rankings
Where Oscar A. ranks by monthly revenue, worldwide, in United States, and in every Upwork skill it competes in.
World#750 / 372,170Top 0.2%
United States#373 / 48,174Top 0.77%Node.js#114 / 26,154Top 0.44%
React#127 / 33,782Top 0.38%
HTML#49 / 16,373Top 0.3%
JavaScript#133 / 38,951Top 0.34%
Web Development#85 / 27,583Top 0.31%
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Freelancer snapshot
On Upwork since2019
Rating100% Job Success
Skills tracked5
Skills
Node.jsReactHTMLJavaScript
Oscar A. works mainly in Node.js, ranking top 0.44% of freelancers in that skill.
MRR trendSoon
Last 12 weeks
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Competitors on the board
Who ranks just above and below by MRR across all freelancers.
This freelancer is #750 of 372,170 across all freelancers.
RankFreelancerMRRMRR trend
MRR benchmark
Oscar A. earns more than 99.8% of all freelancers we track.
Top 0.2%
among all freelancers we track
$0–$500
32%
$500–$1k
12%
$1k–$2.5k
17%
$2.5k–$5k
13%
$5k–$10k
12%
$10k–$25k
10%
$25k–$50k
3%
$50k+
1%
Oscar A.'s bracket · $13k
You32%$0–$500
You12%$500–$1k
You17%$1k–$2.5k
You13%$2.5k–$5k
You12%$5k–$10k
You10%$10k–$25k
You3%$25k–$50k
You1%$50k+
Oscar A. earns an estimated $13k/mo. That's 8.7× the typical freelancer and more than 99.8% of everyone we track.
Freelancers with no recent MRR are excluded. Only the 150,997 freelancers with active monthly revenue are ranked here.
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MRR is an estimate from Upwork's public figures - not an Upwork-official number.