Staff Software Engineer, Accounts & Ledgering

What You’ll Do

• Design the next-generation account and ledger model with immutable events, derived balances, clear semantics for payer vs patient balances vs adjustments vs cash, and invariants preventing errors like "printing money".
• Keep operational balances and financial reports in lockstep with drift detection and self-healing.
• Reconcile multiple sources of truth: billed charges, payer remittances, bank deposits, and financial reports; surface discrepancies proactively.
• Scale idempotent, explainable posting and adjustment pipelines for high transaction volumes using negation/reversal semantics.
• Operate money-critical systems on large Postgres tables, including safe migrations, trigger-driven projections, backfills, observability, and incident response (eventual consistency not acceptable).
• Set the bar for observability and operational readiness: monitoring, logging, distributed tracing, dashboards, alerting, SLOs, safe production rollouts.
• Work with platform and product teams to protect sensitive customer data, tighten security boundaries, and meet regulatory/compliance obligations.
• Own complex cross-system initiatives end-to-end: architecture, implementation, migration, rollout, and production operations.
• Make pragmatic tradeoffs weighing security, correctness, reliability, performance, simplicity against speed of delivery.
• Mentor Senior and Staff engineers; run architecture and design reviews; raise the technical bar through direction, habits, and feedback.
• Take ownership in a fast-moving environment: spot systemic risks early and fix root causes.

What You Have

• 8+ years building software with a track record of Staff-level work, architecture ownership, mentoring, and cross-team influence.
• Strong backend engineering (Python preferred) and deep experience with relational databases at scale: query performance, ACID transactions, safe migrations, data integrity.
• Real experience designing or operating financial systems (payments, billing, reconciliation, accounting, or ledgers). Understand double-entry accounting, append-only ledgers, idempotency, reversals, and deriving balances from immutable history.
• Shipped production systems with observability, alerting, and incident response for high-stakes workflows.
• Strong communication and collaboration skills, especially with ops and customers when correctness is critical.

Bonus Points

• Healthcare RCM, patient accounting, insurance remittance (835/ERA), AR aging, or practice-management billing.
• File-based integrations, bank reconciliation, event-sourced/CDC architectures, or high-throughput batch pipelines.
• Experience evolving a monolith toward clearer domain boundaries or event-oriented models.