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USD
I will integrate openai API into your node js app
Amine E.
About this gig
Already have a Node.js or NestJS application and want to add AI without rebuilding your product?
I will integrate the OpenAI API into your existing backend and turn your AI use case into a clean, maintainable application feature.
Examples include:
- Text or transcript to structured JSON
- Conversation to summary and extracted fields
- Text to classification or analysis
- User request to AI-generated response
- Existing backend to AI chat endpoint
- Documents to RAG-powered search
Depending on the package, I can implement structured outputs, validation, streaming, database integration, webhooks, external APIs, RAG and multi-step AI workflows.
My main stack:
Node.js + NestJS + TypeScript + OpenAI + PostgreSQL + LangChain
You receive maintainable source code, error handling, configuration and clear documentation.
Please message me before ordering so I can review your existing architecture and confirm the correct package.
Get to know Amine E.
Amine E.
RAG and Full Stack AI Developer
- FromMorocco
- Member sinceAug 2026
Languages
Arabic, English, French
I build source-grounded AI chatbots that answer from PDFs, manuals, procedures, and knowledge bases with verifiable citations. I work with document ingestion, chunking, embeddings, vector and full-text retrieval, OpenAI, LangChain, TypeScript APIs, React interfaces, authentication, evaluation, and deployment.
My flagship project is a manufacturing service assistant with PostgreSQL/pgvector, exact-identifier search, streamed answers, page-level sources, multi-turn troubleshooting, administration, and pilot monitoring. I choose the smallest reliable architecture for each workflow.
My Portfolio
FAQ
Can you work with my existing Node.js or NestJS application?
Yes. This Gig is specifically designed for adding OpenAI-powered functionality to an existing Node.js/NestJS backend or application.
What kind of AI features can you integrate?
Examples include summarization, structured data extraction, classification, chat responses, content processing, document Q&A, RAG retrieval and multi-step AI workflows.
Do I need my own OpenAI API key?
Yes. Production API usage should normally run through your own OpenAI account/API credentials. Any required credentials should be shared securely through Fiverr during the order.
Is the OpenAI API cost included?
No. My Gig covers development and integration. OpenAI API usage charges and any third-party hosting/database costs are paid separately by you to those providers.
Can you return structured JSON instead of normal AI text?
Yes. I can design the integration around structured outputs and validated application-ready data when the use case requires it.
Can you connect the AI output to my database?
Yes. Database integration is available in Standard/Premium or as an extra depending on scope.
Do you provide the source code?
Yes. Source-code changes related to the agreed integration are included.
Can you build a RAG feature as part of the integration?
Yes. For a limited RAG integration, Premium may be appropriate. Larger document assistants are better handled through my dedicated RAG development Gigs.
