TypeScript/Node/React Claim Financial Logic & Architecture Audit

I'm seeking a senior engineer to independently audit a TypeScript/Node/React SaaS application. The focus is on financial logic, race conditions, state handling, and overall architecture.

Key Areas of Audit:
- Financial eligibility and deterministic claim calculations:
- Reconciliation
- Export logic
- Cross-screen financial consistency
- Financial eligibility propagation
- Readiness-dollar calculations

The ideal candidate should have:
- Extensive experience with TypeScript, Node.js, and React
- Strong experience auditing deterministic financial calculations, eligibility rules, and data-flow logic
-The auditor must independently inspect the actual repository and provide evidence from the current codebase, not rely solely on prior AI-generated summaries or test conclusions
- Expertise in identifying race conditions and state management issues
- Strong software architecture experience; first phase is audit and evidence, not implementation

Please include relevant experience in your bids.