Sushan Poudel
AI Backend Engineer
Focused on Python and Django backends, FastAPI services, RAG pipelines, LLM agents, system design
I build the backend behind AI products: APIs, retrieval pipelines, and the infrastructure that keeps them reliable.
Select any component to see the design decision behind it.
Selected projects
All projects-
2026
AI agent editing for Django sites with MCP
Two open-source Python packages that let Claude Code and other MCP clients edit a Django site's content safely: API keys, permissions, drafts and no deletes.
-
2025
RAG chatbot with semantic caching
A client chatbot that answers from their own content, with two cache layers and two fallbacks so the model is only called when it adds value.
What I work on
-
Backend engineering
APIs, data models and services built to run in production.
-
AI/ML systems
Putting models behind reliable, observable interfaces.
-
System design
Trade-offs, scaling and failure modes before code.
-
Software architecture
Boundaries that keep systems maintainable as they grow.
-
APIs & distributed systems
Contracts, consistency and communication between services.
-
Production engineering
Deployment, monitoring and keeping things running.
Latest writing
All posts-
Building Your First AI Agent (That Actually Does Something Useful)
Build a working AI agent with LangGraph: two tools, a clear prompt, a step limit and a loop that knows when to stop.
-
Data Leakage Begins in Preprocessing (And Most People Miss It)
Four preprocessing mistakes that leak test data into training, why validation hides them, and how to split first and use pipelines.
Have a system to build, or a role to talk about?
Send a message about work, a project, or something I've written.