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I will build nodejs ai backend with openai, claude, or langchain integration
Talha Ishaque
About this gig
Need an AI-powered backend that actually works?
I build production-ready Node.js backends integrated with OpenAI (GPT-4o), Claude (Anthropic), Gemini, and custom LLMs for startups, SaaS products, e-commerce platforms, and enterprise tools.
What I deliver:
AI chatbot APIs (streaming, memory, tool use)
RAG pipelines (retrieval-augmented generation with Pinecone, Weaviate, or pgvector)
LLM gateway / multi-model routing (OpenAI + Claude fallback)
AI agent backends using LangChain.js or Vercel AI SDK
Document Q&A systems (PDF, CSV, web scraping + embeddings)
Function calling, tool use, and structured output APIs
REST + streaming API endpoints with Node.js / Express / Fastify
My stack:
Node.js · TypeScript · LangChain.js · OpenAI SDK · Anthropic SDK · Vercel AI SDK · Pinecone · PostgreSQL (pgvector) · Redis · Docker · Vercel / AWS
Clients in SaaS, edtech, legal tech, and e-commerce trust me to ship clean, scalable AI backends not just copy-paste demos.
Message me before ordering to discuss your use case. I respond within 1 hour.
Get to know Talha Ishaque
Talha Ishaque
- FromPakistan
- Member sinceFeb 2025
- Avg. response time1 hour
Languages
Urdu, English, French, Spanish
React Native & Spring Boot Developer | Full-Stack Expert
Hi! I'm Muhammad Talha Ishaq, a passionate Software Engineer with expertise in building mobile and web applications. I specialize in React Native for cross-platform mobile apps and Spring Boot for backend development, ensuring seamless performance and scalability.
What I Offer:
✅ React Native Development – Custom mobile apps, UI/UX enhancements, API integration, and performance optimization.
✅ Spring Boot & Java Backend – Scalable, secure REST APIs, database management, and microservices architecture.
FAQ
Do I need my own OpenAI or Anthropic API key?
Yes — you will need your own API key from OpenAI, Anthropic (Claude), or Google (Gemini), depending on which model we use. I will help you set it up if needed. Your key stays private and is never shared. I build the backend so all calls route through your key, meaning you control your own usage limi
Can you integrate AI into my existing Next.js or React app?
Yes, this is one of the most common requests. I can add AI features — chatbots, document Q&A, content generation, or search — to an existing Next.js, React, or any Node.js-based app. I will build the backend API endpoints and connect them to your existing frontend. Please share your current stack de
What is RAG and do I need it for my project?
RAG stands for Retrieval-Augmented Generation. It lets an AI model answer questions using your own documents, databases, or website content — not just its general training data. You need RAG if you want a chatbot that knows about your product, your PDFs, your knowledge base, or any private data. I b
Will the AI responses stream in real time, like ChatGPT?
Yes. I implement streaming responses by default on Standard and Premium packages. This means words appear word-by-word in real time instead of waiting for the full response — exactly like ChatGPT's interface. I use Server-Sent Events (SSE) or WebSockets depending on your stack. Streaming dramaticall
Which AI model should I use — GPT-4o, Claude, or Gemini?
It depends on your use case. GPT-4o is the most versatile and has the widest plugin/tool support. Claude (Anthropic) excels at long documents, nuanced writing, and complex reasoning with a very large context window. Gemini is a strong choice if you are already in the Google Cloud ecosystem. I am exp
What is LangChain and do I need it?
LangChain.js is a framework that simplifies building complex AI workflows — things like multi-step agents, tool use, memory management, and chaining multiple LLM calls together. For simple chatbots, you may not need it. For AI agents, RAG pipelines, or multi-step reasoning apps, LangChain significan
