Writing.

Essays and notes on engineering, AI, and finance.

We Read Every Line. All 4,000 of Them.We review every merge request by hand, including the 4,000-line ones. It's necessary and I don't enjoy it. So we built a second reviewer into GitLab CI: an opencode agent behind a play button, gated on certainty as well as severity. Total model cost: $20 a month.

Two Trees. One Confusion That Matters.On why "market data" is not one thing, and what happens when data engineers treat it like it is. Asset class vs. instrument type, and why they belong in separate columns.

More essays coming soon.