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Notes on building production software.

What we learn shipping custom software, AI products, cloud infrastructure and SaaS platforms — written by the engineers doing the work.

LatestChoosing a Partner

Software Agency vs Freelancer vs In-House: How to Actually Choose

A framework for founders choosing between a freelancer, an in-house hire and a software studio, based on where your product is, not abstract trade-offs.

October 19, 2026 · 9 min read

Custom Software Development

MVP Development Timeline: What a 6–10 Week Build Actually Looks Like

Founders ask the timeline question first and get a vague answer. Here's what determines it, phase by phase, and the red flags that say an estimate is fiction.

October 16, 2026 · 7 min read

AI Product Engineering

What Is RAG? Retrieval-Augmented Generation Explained

RAG makes a language model answer from your documents. How the retrieval pipeline works, where it fails, and what to check before you build one.

October 14, 2026 · 5 min read

AI Product Engineering

RAG vs Fine-Tuning: Which One Does Your Product Need?

RAG changes what a model can look up. Fine-tuning changes how it behaves. When to use each, when to combine them, and how to decide with your own questions.

October 14, 2026 · 5 min read

AI Product Engineering

Why Your RAG Demo Breaks in Production

A RAG demo that nails every curated question can still fabricate answers once it ships. Here's where naive retrieval fails, and the evidence gate that stops it.

October 13, 2026 · 8 min read

AI Product Engineering

Multi-Tenant RAG: Enforcing Data Isolation at the Database Layer

Why tenant isolation belongs in Postgres row-level security, not the prompt — the policy pattern, what it protects against, and where it still falls short.

October 10, 2026 · 7 min read

Notes on building production software.

Software Agency vs Freelancer vs In-House: How to Actually Choose

MVP Development Timeline: What a 6–10 Week Build Actually Looks Like

What Is RAG? Retrieval-Augmented Generation Explained

RAG vs Fine-Tuning: Which One Does Your Product Need?

Why Your RAG Demo Breaks in Production

Multi-Tenant RAG: Enforcing Data Isolation at the Database Layer

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