I will integrate openai API into your node js backend with AWS lambda

Are you looking to add AI capabilities to your existing backend or 

build a new AI-powered service from scratch?

I specialize in OpenAI API integrations with production-grade Node.js 

backends on AWS. I've built AI agents in production using GPT-4o, 

including a restaurant reservation assistant that handles thousands 

of conversations via WhatsApp.

What makes me different: I don't just call the API I build it 

properly, with error handling, rate limiting, prompt engineering, 

and serverless architecture so it scales automatically and costs you 

almost nothing at low traffic.

What I can build for you:

Chat or assistant features powered by GPT-4o / GPT-4-turbo

Document analysis and extraction (PDFs, forms, emails)

AI-powered webhook handlers (WhatsApp, Slack, email)

Streaming responses with SSE

Function calling / tool use integrations

Conversation memory and context management

Cost optimization (token usage monitoring)

Tech stack: Node.js, TypeScript, AWS Lambda, API Gateway, 

DynamoDB, SQS, Serverless Framework

All code comes with:

Clean, commented TypeScript code

Basic documentation

Environment variables properly handled (no hardcoded secrets)