Writing
Notes from the build.
What we learned doing the work, written for the people who have to do it too.
- All
- Security
- Infrastructure
- Fintech
- Machine learning
- Engineering
Image placeholder
Security
What a penetration test actually finds
Most reports are dominated by findings nobody will exploit. The useful part is the short list that someone actually would.
14 Jan 2026 · 6 min
- Cutting a cloud bill in half without touching the productMost overspend is not compute. It is data moving between places it did not need to move between.Infrastructure
- Reconciling a ledger that has already driftedFinding the first divergent transaction is the whole job. Everything after that is arithmetic.Fintech
- Why your model got worse after launchIt probably did not get worse. The world it was measured against did, and nothing was watching.Machine learning
One email when something is worth reading.
No cadence, no newsletter for its own sake.