Replit posted an engineering job inside finance. Base $250K–$340K. Total comp $500K–$700K. The team is called Money Infrastructure.

Anthropic calls theirs Finance Systems. OpenAI calls it Financial Engineering. Mistral and CoreWeave both run Finance Systems teams. Six companies. Four labels. Half call it Finance Systems.

For thirty years, finance and engineering didn't touch. That worked because revenue was slow and legible. A SaaS company sold seats at a fixed price. Finance modeled it in a spreadsheet, reconciled it in a closed billing tool. Then revenue became software.

Charge per token, per agent run, per event — and revenue is generated by the product in real time. You can't report on that after the fact. The number doesn't sit still. This whitepaper explains:

• Why the wall between finance and engineering didn't move: it dissolved
• What Finance Systems Engineers actually own — and what they don't
• Finance 1.0, 2.0, 3.0 — and why the bridge from 2.0 to 3.0 is the role Anthropic just posted
• The first cohort: who's doing this work today and what their job descriptions say