Senior Full-Stack Engineer, Independent Contract (Healthcare Platform)
May 2026 to present
- Architect and majority author, with one partner engineer, of a TypeScript monorepo (React + Vite, Fastify API, Postgres via Drizzle, pnpm + Turborepo) delivering an operations and clinical-quality platform for outpatient behavioral-health programs.
- Built the payor integration layer: HL7 claim submission with ACK handling, and X12-835 remittance parsing that posts payments, reconciles them against open claims, and recalculates accounts receivable.
- Designed the authorization spine: JWT authentication with authorization resolved from a user directory rather than token claims, eight role-scoped surfaces, per-program tenant isolation, and server-side redaction that strips financial fields and PHI before responses leave the API.
- Owned the Postgres schema and Drizzle migrations, with database tests run against the real migration files, and made RBAC, redaction, and audit coverage a required CI gate across 112 test suites.