You will get SaaS MVP, AI Web App & Custom Full-Stack Software Platform
Project details
Got a SaaS idea but no technical co-founder? I build it end to end and hand you a product your first users can sign up for.
12,900+ GitHub stars | 2,600+ forks | 12 open-source products shipped in the last 3 months
What I deliver:
SaaS MVP with auth, database, dashboard, deployed live
Custom web app with admin panel, user roles and reporting
AI features built in: chatbot, automation, GPT/Claude API
Stripe subscriptions and payment flows
Full source code, documented, on your own accounts
Tech stack: React, Next.js, Node.js, Python, Django, PostgreSQL, Supabase, deployed on Vercel or AWS. AI on OpenAI and Claude.
Why work with me:
Speed you can verify: I shipped 12 open-source projects in under three months. Go check the commit dates. That is the pace I build client work at.
You work with the developer directly. No account manager, no telephone game.
Async by design: send a brief, get written progress you can re-read anytime. No meetings.
Fixed scope, fixed price. Clean code you fully own, with docs your next developer can pick up.
Message me with your idea before ordering and I will confirm the scope and the right package within a few hours.
12,900+ GitHub stars | 2,600+ forks | 12 open-source products shipped in the last 3 months
What I deliver:
SaaS MVP with auth, database, dashboard, deployed live
Custom web app with admin panel, user roles and reporting
AI features built in: chatbot, automation, GPT/Claude API
Stripe subscriptions and payment flows
Full source code, documented, on your own accounts
Tech stack: React, Next.js, Node.js, Python, Django, PostgreSQL, Supabase, deployed on Vercel or AWS. AI on OpenAI and Claude.
Why work with me:
Speed you can verify: I shipped 12 open-source projects in under three months. Go check the commit dates. That is the pace I build client work at.
You work with the developer directly. No account manager, no telephone game.
Async by design: send a brief, get written progress you can re-read anytime. No meetings.
Fixed scope, fixed price. Clean code you fully own, with docs your next developer can pick up.
Message me with your idea before ordering and I will confirm the scope and the right package within a few hours.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$249
|
Standard
$795
|
Advanced
$1,795
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 30 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 3 | 6 | 10 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$75 - $285
Additional Revision
+$49
Additional Page
(+ 1 Day)
+$75Frequently asked questions
About Sizhen
Claude Code & MCP Developer | AI Agents, Automation & API Integration
Kowloon City, Hong Kong - 9:02 pm local time
My open-source projects have earned 12,900+ stars and 2,600+ forks, all built in the last few months. Forks matter more than stars: 2,600+ means people run my code in production, not just bookmark it. Every project is public on GitHub — you'll find them in my Portfolio below, with the numbers you can verify yourself.
Most "AI agent developers" hand you a fragile n8n flow or a LangChain demo that breaks the first time real data hits it. I build systems that stay up. My a-stock-data toolkit (7,600+ stars) pulls from 15 data sources across 43 endpoints with automatic failover — when one source dies, it reroutes instead of crashing. That is the engineering I bring to your project.
The domain of my public work happens to be financial data, but the engineering — multi-source pipelines, agent orchestration, MCP servers — transfers to any industry.
WHAT I BUILD
🔌 MCP Servers & Claude Code Setups
I build Model Context Protocol servers so your agent reaches any tool, API, or database through one clean interface. Broken Claude Code configs — missing MCP integrations, hooks, permission models, runaway token use — are things I fix routinely.
🤖 AI Agents & Multi-Agent Systems
Agents that plan, call tools, and take real actions in your stack. My TradingAgents framework (2,500+ stars) runs 7 agents that debate and reach a decision together, with risk checks built in.
⚙️ Workflow Automation
n8n, Make, and custom Python for the manual work that eats your team's week — lead routing, CRM sync, reporting, document processing. Built to be maintained, not to fall over in a month.
🔗 API Integration
Connecting tools that don't talk to each other, with webhooks and custom code that survives rate limits, retries, and the source going down.
🛠 Fixes for AI / Vibe-Coded Apps
If an app from Lovable, Bolt, or Cursor is half-working, I clean up the code and get it shipped — and you own it, clean, afterward.
TECH STACK
AI/LLM: Claude, OpenAI, MCP, RAG, LangChain
Backend: Python (FastAPI), Node.js, TypeScript
Automation: n8n, Make, custom scripts
Data: PostgreSQL, Supabase, vector databases, multi-source pipelines
Frontend: React, Next.js
HOW I WORK
I work async and text-first. You get clear written updates, clean documented code, and a recorded walkthrough at handoff, so you can run and maintain the system after I'm done. No standing meetings, no black boxes — progress you can see at every step.
If you have an AI system that needs building, or one that's already broken, send me the details. I'll tell you exactly how I'd approach it before you spend a dollar.
Steps for completing your project
After purchasing the project, send requirements so Sizhen can start the project.
Delivery time starts when Sizhen receives requirements from you.
Sizhen works on your project following the steps below.
Revisions may occur after the delivery date.
Share your brief
You send your idea, core features, and who the users are. I confirm scope and the right package within a few hours.
Scope and plan in writing
I turn it into a concrete feature list and architecture, and agree the exact scope and timeline with you in writing.