Nicholas BorszichWriting about engineering, statistics, and the systems behind them.https://nicholasborszich.com/One A/B testing product, two very different worlds: building for Shopify and the open webhttps://nicholasborszich.com/blog/multiplatform-design/https://nicholasborszich.com/blog/multiplatform-design/What it actually takes to run one A/B testing product on both Shopify and arbitrary HTML sites — auth, event ingestion, available data, and why a half-dozen switch statements beat the interface I almost wrote.Tue, 12 May 2026 00:00:00 GMTThree boring Claude features inside a stats app — and the patterns that made them shiphttps://nicholasborszich.com/blog/three-claude-features/https://nicholasborszich.com/blog/three-claude-features/LLM features that sit quietly inside a SaaS product: a pre-launch reviewer, an async anomaly detector that returns strict JSON, and a cached post-experiment analyzer. The wrapper is 100 lines.Tue, 05 May 2026 00:00:00 GMTBayesian A/B testing in 200 lines of Go: what 5,000 samples actually buys youhttps://nicholasborszich.com/blog/bayesian-ab-testing/https://nicholasborszich.com/blog/bayesian-ab-testing/A walkthrough of a production Bayesian A/B testing engine: Beta-Binomial for conversion, Normal for revenue, Monte Carlo sampling, and the LiftDistribution trick that makes credible intervals on dollars interpretable.Tue, 28 Apr 2026 00:00:00 GMT