Staff Software Engineer, Accounts & Ledgering

What we're looking for:

We need a Staff Software Engineer with 8+ years of experience building backend systems and 3+ years designing and operating financial systems from 0-to-1. We're looking for someone who has built a double-entry payment ledger that has deep expertise in accounts and ledgering — payments, billing, reconciliation, ledgers, or accounting. You should be comfortable owning the full architecture of money-critical systems at scale and have a track record of designing immutable, event-oriented data models where correctness is non-negotiable. Bonus points if you have healthcare RCM, insurance remittance (835/ERA), or bank reconciliation experience.

What you'll do:

• Design and operate a double-entry payment ledger and the next-generation account and ledger model — immutable events, derived balances, and clear semantics around payer balance vs. patient balance vs. adjustments vs. cash, with invariants that make it structurally impossible to "print money"
• Take ownership of the full money path: insurance ledger, posting/adjustment engines, patient account ledgers, bank reconciliation, and reporting/AR
• Reconcile multiple sources of truth — billed charges, payer remittances, bank deposits, and financial reports — and surface discrepancies before customers do
• Scale idempotent, explainable posting and adjustment pipelines across high transaction volumes using negation/reversal semantics instead of mutable edits
• Operate money-critical systems on very large Postgres tables with safe migrations, trigger-driven projections, backfills, observability, and incident response where "eventually consistent" isn't acceptable
• Set the bar for observability and operational readiness — monitoring, logging, distributed tracing, dashboards, alerting, SLOs, and safe production rollouts
• Mentor Senior and Staff engineers, run architecture and design reviews, and push the technical bar higher through clear direction and honest feedback
• Own complex, cross-system initiatives end to end: architecture, implementation, migration, rollout, and production operations