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.

7 articles published4 delivery domains coveredWeekly cadence

Recent posts // the archive

1-5 of 7 posts
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
SaaS product flow audit: fixed-scope pricing for onboarding and redesign cover image
SaaS product flow audit: fixed-scope pricing for onboarding and redesign
Fixed-scope saas product flow audit packages to find onboarding friction, stabilize billing and LLM cost, and scope a validated first paid AI SaaS release with measurable KPIs.
Igor NepipenkoIgor Nepipenko7 min read
RAG implementation cost: TCO linking retrieval, permissions, ownership cover image
RAG implementation cost: TCO linking retrieval, permissions, ownership
A technical TCO model for RAG implementation cost that links retrieval quality, permissions, and operational ownership to dollarized outcomes and a fixed-scope first sprint.
Igor NepipenkoIgor Nepipenko7 min read
AI SaaS development company: agency vs boutique studio vs freelancer cover image
AI SaaS development company: agency vs boutique studio vs freelancer
A technical guide for CTOs comparing agency, boutique studio, and freelancer options when hiring an ai saas development company—focus on risk, cost drivers, and a measurable first‑
Igor NepipenkoIgor Nepipenko7 min read