You will get an NFT trading website
Top Rated
Project details
You will get a complete NFT trading platform. Including front-end web page (wallet link + contract integration) + sub-graph (real-time acquisition of specific contract data on the chain) + back-end (processing sub-graph data, providing complex queries according to page requirements)
Programming Languages
JavaScript, PythonCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,000
|
Advanced
$2,000
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 20 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 6 | 6 | 12 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$200 - $1,000
27 reviews
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AA
Asia A.
Aug 7, 2025
Software dev
Very skilled developer and extremely helpful.
DW
Daniel W.
Mar 24, 2025
Full Stack JavaScript Developer (React/Nest/GraphQL/REST/Postgres)
AA
Asia A.
Mar 10, 2025
Debugging help
LS
Lawrence S.
Feb 20, 2025
Nuxt Development - Ongoing work
I have hired many freelancers for coding work and Kui was the best, by a wide margin. He always delivers on what he says. He works efficiently and gets jobs done faster than other programmers. His code is logical, not overly complex and just works right the first time. I give my highest recommendation for him of any freelancer I have hired on Upwork - for any type of task.
HS
Henry S.
Feb 18, 2025
Electron/React.js front-end for game
I was very pleased with Kui's work. He created an electron/React app quickly and integrated with our Django webserver.
About Kui
AI Integration Engineer | React Native + LLM Apps Shipped on App Store
100%
Job Success
Wuhan, China - 9:55 am local time
Most recent: a full end-to-end AI skincare platform live on the Japan App Store — built solo from Figma to launch.
📱 React Native app (iOS & Android): AI face scan, real-time voice chat via OpenAI Realtime API + WebRTC, skincare routine builder, Stripe + RevenueCat subscriptions, Google Maps clinic finder.
⚙️ FastAPI backend: 20+ API route groups, JWT auth, RAG-powered recommendation engine (LangChain + Pinecone), Stripe payment processing.
🧠 AI image analysis microservices: dual-mode skin analysis pipeline combining MediaPipe / OpenCV computer vision AND GPT-4 Vision, with async Celery job queue and S3 storage.
What I do, end-to-end:
✅ AI / LLM: OpenAI / Anthropic / LangChain / RAG (Pinecone) / Realtime Voice AI / Computer Vision
✅ Mobile: React Native (Expo) / iOS / Android / Stripe / RevenueCat / In-App Purchase / Push
✅ Backend for AI: FastAPI / NestJS / PostgreSQL / Vector DBs / Celery
✅ Infrastructure: AWS / Docker / Redis / CI/CD
I work best with founders and product teams who need an engineer who can take an AI idea from Figma to App Store solo — including the LLM/RAG/agent layer, payments, and infra — without hand-holding.
If your project has an AI component (chatbot, RAG, face analysis, voice, agent workflow) and a real ship date, message me with the rough scope. I usually reply within a few hours and can offer a 1–3 day free pilot so we can validate fit before committing to the full build.
Steps for completing your project
After purchasing the project, send requirements so Kui can start the project.
Delivery time starts when Kui receives requirements from you.
Kui works on your project following the steps below.
Revisions may occur after the delivery date.
Basic framework construction
Specific requirements realization