Field Notes

AI Engineering Notes: LLM, RAG & SaaS.

Practical notes on shipping AI SaaS, LLM/RAG features, workflow automation, backend architecture, and product UI/UX into production — with real tradeoffs, delivery patterns, and production lessons.

10 articles published4 delivery domains coveredWeekly cadence

Recent posts // the archive

1-5 of 10 posts
Vendor comparison matrix for RAG implementation agency: retrieval, controls, evals, and O cover image
Vendor comparison matrix for RAG implementation agency: retrieval, controls, evals, and O
Compare rag implementation agency options with a technical matrix focused on retrieval, data controls, evals, and operational ownership. Includes vendor checklist and sprint scope.
Igor NepipenkoIgor Nepipenko7 min read
Managed vs Self-hosted LLM RAG implementation private data — decision matrix cover image
Managed vs Self-hosted LLM RAG implementation private data — decision matrix
Technical decision matrix for CTOs: choose managed or self-hosted LLM RAG for private, regulated data. Includes risk mapping, cost drivers, and a scoping plan.
Igor NepipenkoIgor Nepipenko8 min read
RAG implementation services: pricing & scope for enterprise SaaS cover image
RAG implementation services: pricing & scope for enterprise SaaS
A technical breakdown of rag implementation services for enterprise SaaS: retrieval architecture, evals, citation integrity, SLAs, cost drivers, and a sprint-level scope plan.
Igor NepipenkoIgor Nepipenko8 min read
React native vs native app development for SaaS: practical decision guide cover image
React native vs native app development for SaaS: practical decision guide
A technical, decision-focused comparison for CTOs weighing react native vs native app development for saas when APIs are shared but native UX is required. Includes risks, metrics,迁
Igor NepipenkoIgor Nepipenko8 min read