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Measuring engineering,
in the open.
Field notes from the team building the performance layer for modern engineering.
Jirka Bachel3 min readYou Can't Measure ROI on AI Coding Tools If You Never Measured Engineering
Uber burned through its 2026 AI coding budget in four months and couldn't show what it bought. Why ROI on AI coding tools is unknowable until you measure engineering output itself.
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Jirka Bachel9 min readPerformance per Engineer Doubled at Six Big Tech Companies. Here's How It Was Measured.
Inside the commit-level analysis of 676 engineers across six major tech companies that found a 116% year-over-year jump in performance, with a sharp Q1 2026 inflection point that broke from the steady growth of earlier quarters.
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Jirka Bachel7 min readThe Story of Navigara: How We Built the Performance Layer for Modern Engineering
How Navigara grew from a developer career platform into a measurement system for engineering performance, and why we introduced Engineering Throughput Value (ETV) to quantify real code contribution beyond traditional metrics.
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