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Fiverr Pro
English
$
USD
I will develop ai full stack saas web app, react, nextjs, fastapi, nodejs, headless cms
Greene Joyce
About this gig
Need a professional Full Stack Web Developer to build a modern, scalable, and high-performing web application? You're in the right place!
I specialize in React JS, Next.js, FastAPI, Node.js, NestJS, Python, AI SaaS, API integrations, databases, and headless CMS development.
What I Build:
- Full stack web applications with React JS, Next.js, FastAPI, Node.js & NestJS
- AI SaaS platforms, AI web apps, AI agents & LLM integrations
- AI chatbots, RAG systems, vector search & AI automation
- SaaS platforms with Stripe, JWT authentication & role-based access
- Headless CMS using Sanity CMS & WordPress ACF
- Admin dashboards, client portals, internal tools & startup MVPs
- REST APIs, third-party integrations & payment gateways
- Python automation, web scraping, Celery & background tasks
Technologies:
Frontend: React, Next.js, JavaScript, TypeScript
Backend: FastAPI, Python, Node.js, NestJS
Database: PostgreSQL, MongoDB, Redis, Supabase
AI: OpenAI, Claude, Gemini, LangChain & LangGraph
Deployment: Vercel, Railway, AWS, Docker & VPS
Message me before ordering so I can review your requirements
Get to know Greene Joyce
Greene Joyce
Booky
- FromUnited States
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, Spanish, Italian
I’m a Xero bookkeeping specialist helping small businesses keep their finances accurate and organized. I provide services including Xero setup, bank reconciliation, expense tracking, invoicing, and bookkeeping cleanup.
My goal is to deliver reliable, detail-focused bookkeeping support so you can save time and focus on growing your business.
Other Software Development Services I Offer
FAQ
What do you need from me to get started?
Just a clear idea of your project (or a rough one, we will refine it together). If you have wireframes, Figma/XD designs, feature lists, or sample sites you like, send those too.
Can you build the full app from scratch?
Yes, I handle complete full-stack development. I can build the frontend with React or Next.js and the backend using Node.js, Flask, or Django, along with database setup and API integration.
Do you build AI tools or agents using LangChain or OpenAI?
Yes. I can set up LangChain or LangGraph agents connected to GPT, Claude, or Mistral via APIs, including memory, tools, and custom workflows.
Will the app be mobile responsive?
Absolutely. I use Tailwind CSS to create clean, responsive UIs that work across all devices, including mobile, tablet, and desktop.
Can you connect Stripe or other third-party APIs?
Yes. I can integrate payment gateways like Stripe and connect any third-party service that offers an API, including CRMs, email services, or databases.
Do you provide deployment support?
Yes. I can deploy your project to services like Vercel, Render, Railway, or your own VPS using Docker or FastAPI servers.
Can you work on an existing project or only new builds?
I can do both. If you have an existing project, I can audit it, fix bugs, or add new features as needed.
