You will get Secure AI Knowledge-Base Portal (CustomGPT/Chatbase + Stripe, Auth)
Project details
I set up a subscription AI portal using CustomGPT or Chatbase for B2B teams. You get a private, protected knowledge base, Stripe subscriptions (tiers, trials, webhooks), authentication (Clerk/Supabase or SSO), custom domain & branding, and a clean admin dashboard for users/docs/usage. Delivered with docs and a 2-hour training—mapped to Launch/Pro/Scale page counts.
Programming Languages
HTML & CSS, JavaScript, PythonWhat's included
| Service Tiers |
Starter
$555
|
Standard
$1,150
|
Advanced
$2,300
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 21 days |
Number of Revisions | 1 | 1 | 1 |
Number of Pages | 2 | 4 | 6 |
Design Customization | |||
Content Upload | |||
Responsive Design | - | ||
Source Code | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $300
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About Ayyappan
Senior C#/.NET & Python Developer | AI, APIs & Trading Automation
100%
Job Success
Robbinsville Township, United States - 7:17 am local time
I bring 24+ years of software engineering experience, including 16 years in senior engineering roles within the banking industry. I build production-ready software using C#/.NET, Python, AI, APIs, React, SQL Server, and modern cloud technologies.
I help businesses turn complex requirements, unfinished applications, integration problems, and product ideas into secure, reliable, and maintainable software.
I can help you with:
• Custom SaaS platforms, business applications, dashboards, and internal systems
• AI applications, RAG systems, chatbots, document intelligence, and workflow automation
• Python automation, data processing, backend services, and AI integrations
• REST APIs, WebSockets, webhooks, payment integrations, and data pipelines
• C#/.NET and Python application development, modernization, troubleshooting, and performance optimization
• React web applications and administrative dashboards
• Desktop applications, Windows services, SQL Server, and database-intensive systems
• Algorithmic trading systems, broker integrations, backtesting platforms, and automated execution
I am particularly effective when:
• Requirements are complex, incomplete, or need technical clarification
• An existing developer left behind unfinished or unstable code
• AI-generated code needs professional review and production hardening
• Multiple APIs, platforms, databases, or external services must work together
• A prototype needs to become a secure, scalable, and maintainable product
• A trading system requires accurate execution, risk controls, logging, and testing
My technical stack includes C#, .NET, Python, FastAPI, Flask, React, JavaScript, SQL Server, PostgreSQL, REST APIs, WebSockets, automation, system integration, and cloud deployment.
For trading technology, I work with NinjaTrader 8, Interactive Brokers API, TradingView, Pine Script, options-trading systems, Telegram and Discord integrations, automated execution, backtesting, and risk-management software.
I personally handle requirements analysis, architecture, technical decisions, client communication, development oversight, and delivery. For larger projects, additional frontend, mobile, QA, UI/UX, or DevOps resources can be provided transparently through my Upwork agency.
Send me your requirements, existing source code, screenshots, or API documentation. I will help identify the appropriate architecture, technical risks, delivery milestones, and practical path to completion.
Steps for completing your project
After purchasing the project, send requirements so Ayyappan can start the project.
Delivery time starts when Ayyappan receives requirements from you.
Ayyappan works on your project following the steps below.
Revisions may occur after the delivery date.
Platform (CustomGPT/Chatbase/open)