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Writing on AI engineering & modern software delivery.

Field notes from the studio — how we build, what works, what doesn't, and where AI is actually changing software engineering. Written by the engineers doing the work.

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AI engineering

RAG Isn't a Product. Evaluation Is.

Nine in ten Retrieval-Augmented Generation projects we're asked to review have the same problem — nobody set up an evaluation pipeline before writing a line of code. A practical framework for measuring RAG quality on your own data.

· 10 min read

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Delivery

Anatomy of a 4-Week MVP

Sprint by sprint, hour by hour: how RedFin AI compresses three months of typical agency work into 28 calendar days. What we automate, what we don't, and where the 80% speed-up actually comes from.

· 9 min read

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Cost engineering

How to Cut Your LLM Costs by 70%

Almost every AI system we're asked to review is spending 3–5× more on LLM inference than it needs to. Here are the five techniques we apply — prompt caching, small-model routing, semantic caching, prompt compression and batching.

· 11 min read

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Mobile

Native vs React Native in 2026

The 2018 answer doesn't apply anymore. React Native has matured, native tooling has changed, and the honest trade-offs now live in different places than most articles describe. Here's where they actually are.

· 8 min read

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AI regulation

The EU AI Act, Practically

Most UK teams think the EU AI Act is either a problem for someone else, or such a big problem they can't start yet. Both are wrong. What actually applies to you and how to ship this quarter.

· 10 min read

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