I will build production ai agents and backend with langchain and python


About this gig
Need an AI agent that actually DOES things, not just a chatbot? I build production AI agents and backend systems using LangChain, LangGraph, and Python. 4+ years as a Cloud Infrastructure Engineer with deep AI and automation experience.
WHAT I BUILD
- Multi-step AI agents (LangGraph) that call tools, query APIs, search the web
- - RAG systems over your docs/PDFs/database with cited sources
- - FastAPI backends so any app can call your AI
- - Vector DB setup (Pinecone, Chroma, Weaviate)
- - Tool-use agents for email, calendar, Stripe, internal APIs
- - Custom GPT or Claude integrations with your business logic
STACK
Python, LangChain, LangGraph, OpenAI GPT, Anthropic Claude, FastAPI, Pinecone, Postgres, Docker.
WHAT YOU GET
- Working code with comments
- - FastAPI endpoint you can integrate anywhere
- - README with setup steps
- - 10-min Loom walkthrough
- - Free bug fixes for 30 days (Premium tier)
YOUR API KEYS, YOUR DATA. I never store credentials and never call APIs on your account after delivery.
Message me with your use case. I will quote firmly within 1 hour and confirm feasibility before you order.
Get to know Shubham P
Cloud Infrastructure Engineer
- FromIndia
- Member sinceMay 2026
Languages
English
FAQ
Whose OpenAI or Anthropic API key gets used?
Yours. I'll help you set up an account if needed. This way you control costs and keep your data private. Typical small project runs $5-30/month in API costs.
Can the agent connect to my CRM, database, or custom API?
Yes - tool integration is core to what I build. Send me the API docs or examples and I'll confirm feasibility and quote within 1 hour. Works with REST APIs, GraphQL, Postgres, MySQL, MongoDB, and SaaS tools like Stripe, Notion, Airtable, HubSpot.
What if the agent doesn't perform well on my use case?
Standard and Premium tiers include revisions. I tune prompts, retrieval settings, and tool definitions until it works on the scenarios you provide. If we discover the use case isn't feasible mid-build, I'll refund and tell you what would work.

