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Rex
YC S26rex.inc · 2 open roles in the last 6 months · hiring in 1 country
Rex runs enterprise order-to-cash work, such as collections, disputes and payment matching, with AI agents overseen by finance experts.
Startup brief from its YC profile and homepage and 2 roles from the last year · updated 19 Oct 2026. Not a statement by the company.
What they're building
Founded 2026 · 2 people · San Francisco
Rex takes on the order-to-cash work companies usually outsource: chasing invoices, submitting to customer portals, triaging disputes and applying payments, using agents that act across email, ERP, CRM, voice and portals. Finance operators from Rex oversee each deployment, the customer's policies become procedures the agents follow, and Rex reports against agreed response and resolution times. The founders previously built the finance operations platform Sequence.
Who they're hiring
Founding AI engineering
A founding AI engineer in London to build the agents that clear payment blockers across email, ERPs and customer portals.
Finance operations
A finance operator in residence in London to run order-to-cash work for customers alongside the agents and teach them how to handle exceptions.
Questions to ask in a coffee chat
- How do finance operators and engineers work together when an agent handles an exception wrongly?
- Which parts of order to cash do the agents handle well today, and where do people still step in most?
- How does a new customer's policy become a procedure the agents follow?
- How is work split between London and San Francisco?
A brief, not a roadmap: Rex posted fewer than 5 roles in the last year, too few to read a direction from. It becomes a roadmap once there are more.