I will fix and refactor ai generated nextjs fastapi apps

T
tosh_gitonga
T
tosh_gitonga
Tosh W. Gitonga
fix and refactor ai generated nextjs fastapi apps
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fix and refactor ai generated nextjs fastapi apps
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fix and refactor ai generated nextjs fastapi appsfix and refactor ai generated nextjs fastapi appsfix and refactor ai generated nextjs fastapi apps

About this gig

AI Generated Nextjs FastAPI App Cleanup and Fix

Got an app built with Claude Code, Cursor, v0, Lovable or ChatGPT that is buggy, untyped, insecure or not production ready?

I turn messy AI-generated Next.js 14 + FastAPI code into clean, secure, scalable and maintainable applications.

What you get:

  • Full code review and bug fixing
  • Clean architecture and strong structure
  • JWT Auth + RBAC
  • Rate limiting
  • PostgreSQL + SQLModel
  • Documented API contracts
  • 100% typed code (TypeScript strict + mypy strict)
  • Alembic migrations
  • NextAuth, Zustand, TanStack Query
  • Tailwind + modern UI
  • PWA ready frontend
  • M-Pesa and fintech ready (Kenya experience)

Backend: FastAPI SQLModel PostgreSQL JWT RBAC Rate Limiting Alembic

Frontend: Next.js 14 App Router TypeScript strict NextAuth Zustand TanStack Query

Why choose this service:

  • Production-focused workflow (not just prompts)
  • Clean code that is easy to maintain and scale
  • Real experience with fintech and marketplace apps

Message me before ordering with your repo or issues. I will confirm the best package for you.

Clean code. Strong architecture. Reliable apps that are easy to maintain.

  • Website type

    • Business

  • Programming language

    • HTML & CSS
    • Python
    • TypeScript
    • Tailwind CSS
    • Node.js

  • Website features

    • Payment
    • Map
    • Portfolio
    • Dashboard
    • Reviews
    • Landing page
    • Blog
    • User Authentication
    • Admin Panel
    • API integration
Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Tosh W. Gitonga

Tosh W. Gitonga

Python, full stack developer, FastAPI, Nextjs, Webscraping

5.0(2)
  • FromKenya
  • Member sinceJan 2023
  • Avg. response time1 hour
  • Last delivery2 years

  • Languages

    English, Swahili, Kikuyu
I’m a Python and full-stack developer working with FastAPI, PostgreSQL, Next.js, and TypeScript. I build web applications, APIs, web scrapers, and automated data pipelines. I also review, fix, refactor, and extend AI-generated apps built with tools like Claude Code and Cursor. My development work includes JWT authentication, role-based access control, rate limiting, database migrations, typed APIs, and modern Next.js applications. Whether you need structured web data or help improving an existing codebase, I focus on practical, reliable solutions.

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