Alex Casey
I design and build finance systems.
The operating model, the certified numbers, a phone-first page for the board and the team, and agents that read the same numbers. One case study below, with a live copy you can open on your phone or your desk.
A fictional company. The figures are illustrative; the system is real.
The finance platform
In November 2026 I built a complete finance platform for a company at the stage where the finance function does not exist yet and a raise is a few months out. Five days from a one-hour conversation to a certified operating model, a page the team opens on a phone, a question box over the numbers and an MCP server for agents.
- A line-item operating model in five cases, certified by a chain of checks before a single number leaves it.
- An export where every file carries its hash. The page checks the hashes and withholds every figure on a mismatch.
- Every tile opens the inputs behind it and the decision it feeds. Cash, orders, delivery and the data partner each have a path.
- A question box scored against a test set, and an MCP server that lets the team's agents read the same numbers by role.
System design
Three of the four figures. Each opens at full size on the system design page.
