Private LLM RAG copilot on enterprise documents
Anonymised engagement: private-document RAG copilot with guardrails, audit trails, and on-prem deployment for an enterprise R&D knowledge base.
Stack: LangChain · vLLM · pgvector · FastAPI · MLflow · Docker · Kubernetes
Challenge
Sensitive internal documents, hallucination risk, and procurement requirements for source-open delivery and latency SLAs.
Solution
TechieYan built a chunked retrieval pipeline, reranker, guardrail filters, conversation audit logs, and vLLM serving on client VPC with documented p95 latency.
Outcomes
- p95 query latency under 2.5s on private corpus of 40k documents
- Guardrails blocking 98% of policy-violating prompts in red-team eval
- Full audit trail for compliance review
- Client owns embeddings, indexes, and serving code
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