Writing

Decisions & field
notes

Notes from a hands-on CTO — teams, delivery, technology and teaching. Written to be re-read, not catalogued.

Field notes: teams, delivery, architecture, platform, observability, and CI.

Dossiers

Published series

6 pieces · 4 publishedWhen AI speeds up the code, CI has to keep upWorkstation checks; GitHub keeps the final say.

5 pieces · 4 publishedNix, Entra, and Apple BusinessSeparate enrollment, identity, and workstation state.

4 pieces · 4 publishedOpenTelemetry in productionFrom Dynatrace to operating the open-source stack.

Library

10 articles

Filters

21 Oct 2026Why I ended up writing a small macOS app to provision my workstationsField note

16 Oct 2026We moved CI onto our Macs. Not our standards.Architecture decision

14 Oct 2026Apple Business to enroll, Entra to decide which workstation to buildArchitecture decision

13 Oct 2026A public Flagger lab: Gateway API, not make magicField note

9 Oct 2026AI writes faster. Our CI had to keep up.Architecture decision

3 Oct 2026Why I stopped treating Mac provisioning as an MDM problemArchitecture decision

22 Sept 2026OpenTelemetry in production: the open-source stack you still have to operateField note

22 Sept 2026OpenTelemetry: 400,000 databases, cardinality, and other telemetry trapsField note

22 Sept 2026OpenTelemetry on 200 services: cover fast without rewriting fifteen years of codeField note

22 Sept 2026Why I proposed OpenTelemetry during a Dynatrace migrationArchitecture decision