Workforce Management SaaS — UK Healthcare Staffing Agency

Architecture: Next.js frontend, Node.js/Fastify backend, PostgreSQL separate schema per agency tenant (multi-tenant for future SaaS expansion), Stripe for invoice payments, AWS eu-west-2. IR35 Status Management: The platform manages IR35 determination for healthcare workers placed with NHS Trusts. NHS Trusts are medium/large organisations — they are responsible for IR35 determinations. The platform generates Status Determination Statements (SDS) with documented reasoning, stores determination history, and tracks 45-day challenge window compliance. Professional Registration Verification: NMC (Nursing and Midwifery Council) and GMC (General Medical Council) registration verification via their public APIs. DBS certificate tracking with renewal reminders. NHS Enhanced DBS required for all clinical placements. HMRC RTI PAYE Integration: Real Time Information (RTI) PAYE submissions via HMRC APIs for weekly payroll. Starter declarations, leaver notifications, and P60 generation. NHS Bank shift management with automated timesheet-to-payroll reconciliation.