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Fiverr Pro
English
$
USD
I will build your fullstack web app with nextjs typescript and react
antoniosau
About this gig
You do not need another freelancer who ships a pretty front end on top of a fragile backend. You need one senior engineer who owns the whole thing: data model, API, UI, auth, payments, deployment.
WHAT I BUILD
- SaaS products and web apps in Next.js 15 (App Router) and TypeScript
- Dashboards, admin panels, internal tools, customer portals
- REST and tRPC APIs with PostgreSQL, Prisma or Drizzle
- Auth, roles and permissions, Stripe subscriptions, file uploads, emails
- AI features inside your product: chat, search, generation
- Rescue and refactor of an existing Next.js or React codebase
HOW I WORK
- We agree on scope, screens and data model before a line of code
- Weekly deployed preview so you always see real progress
- Typed code, tests on the critical paths, readable commits
- Deploy on Vercel, AWS or your infrastructure, plus handover docs
STACK
Next.js, React, TypeScript, Tailwind, shadcn/ui, Node.js, PostgreSQL, Prisma, Supabase, Stripe, Docker, AWS, Vercel.
WHY ME
13+ years as a senior full-stack engineer, 40+ projects delivered at 4.9. I write code that the next developer can read.
Message me with your idea and I will send scope, price and timeline.
Get to know antoniosau
antoniosau
Senior AI and Full Stack Engineer for RAG and TypeScript apps
- FromItaly
- Member sinceJul 2019
- Avg. response time1 hour
- Last delivery2 years
Languages
Italian, English
Senior full-stack engineer, 13+ years shipping production systems.
I build three things: AI/LLM products (RAG assistants, agents, OpenAI & Claude integrations), web apps in Next.js/TypeScript/React, and solid backends in Laravel, Symfony and NestJS.
I work as a technical partner: I scope the real problem, propose the simplest architecture that works, and hand over documented, deployable code your team can maintain.
Stack: TypeScript, Node.js, NestJS, Next.js, React, PHP, Laravel, PostgreSQL, Docker, AWS, LangChain.
Italy-based, fully remote, English and Italian. Message me before ordering.
Other Software Development Services I Offer
FAQ
Can you take over an existing project?
Yes. I start with a short audit of the repository, give you an honest report on what is solid and what is not, then a plan with priorities. Rescue work is one of the things I do most often.
Do you do design too?
I build clean, modern interfaces with Tailwind and shadcn/ui, and I work from your Figma if you have one. If you need original brand design, I will tell you rather than fake it.
What about hosting and third party costs?
Hosting, database and third party services stay on your accounts. I set them up, document them and keep the stack lean so the monthly cost is predictable.
Will I be able to maintain it?
Yes. Typed code, conventional structure, README with setup and deploy, and a walkthrough call at handover. No hidden framework of my own.
How do we handle scope changes?
We start from a written scope. Anything new is quoted as a custom offer before I build it, so there are no surprises for either of us.
