I will build your react and next js web app front to back


About this gig
Most freelancers hand you code and disappear. I build and run live SaaS solo, so I know what a build is actually for, not just how to ship it.
I am Alex, a full-stack engineer based in Miami. I build and operate a live multi-tenant SaaS with paying users, and I shipped a full production CRM solo in weeks. Same person doing your frontend, backend, database and deploy. No handoffs, nothing lost between people.
What I build with React and Next.js:
- SaaS apps with auth, multi-tenant data and billing
- Dashboards and CRMs with real data behind them
- Booking flows, Stripe payments, API integrations
- Fast, responsive interfaces that hold up under real use
My stack: React, Next.js, TypeScript, Node, Tailwind, Supabase and Postgres, deployed on Vercel. I work in Supabase and Firebase, not deep AWS internals, and I will tell you straight when something is outside my lane.
I take clear scope, ship clean typed code with comments, and hand you something you can actually run and grow.
What are you building, and what does it need to do on day one? Message me before ordering so I can scope it right.
Get to know Alejandro O
FullStack Engineer
- FromUnited States
- Member sinceJul 2026
Languages
English, Spanish

