A Finance Systems Engineer owns the systems that turn usage, contracts, pricing, billing, collections, revenue recognition, and close into one trusted finance operating model.

Not a finance analyst with SQL. Not an ERP admin. Not a general platform engineer. A senior technical operator who sits with finance, speaks engineering, and makes revenue systems reliable, auditable, and fast to change.

The mistake is hiring a tool specialist to own the whole thing. A NetSuite admin knows NetSuite. A CPQ consultant knows quoting. None of them owns how the pieces fit. This handbook covers:

• When to hire: the two-or-more signals that mean you're already late
• The hiring scorecard — six competencies, including an AI literacy ladder most candidates don't know exists
• Where to find them (the title isn't standardized yet, so don't search for it)
• The four archetypes, the interview loop, and what a strong first 90 days looks like