Run payroll for 8,000 employees across 350 companies without a single rounding error. One platform handles HR and money, onboarding to direct deposit, at 99.99% accuracy.
Payroll has no tolerance for "close enough." A cent off on one deduction multiplied across 8,000 employees is a failed run and an angry employer.
We made the calculation engine deterministic and pure: same inputs always produce the same cents. Money is stored as integers, never floats, and every run is sealed into an immutable snapshot so the number that was approved is the number that gets paid.
350 companies share one platform but never each other's data. PostgreSQL row-level security scopes every query to a tenant, and Stripe Connect gives each employer its own funding and payout flow.
The result is one codebase, one deploy, and isolated books, so onboarding company 351 costs us nothing but a row in the database.
| Component | Technology | Why |
|---|---|---|
| Web app & dashboards | Next.js | SSR for fast, SEO-clean employer and employee portals |
| API & calc engine | Node.js | Shared TypeScript models between client and payroll logic |
| System of record | PostgreSQL | ACID transactions and row-level tenant isolation |
| Money movement | Stripe Connect | ACH payouts with idempotency and built-in compliance |
| Infra & storage | AWS | Autoscaling compute plus versioned S3 for documents |
New hires complete profiles, tax forms, and bank details in one guided flow that feeds payroll directly.
Earnings, deductions, and taxes resolve per employee with no manual spreadsheet math.
Once approved, a run is locked into an immutable snapshot to guarantee what's calculated is what's paid.
Net pay is funded and pushed to employee bank accounts with idempotent, retry-safe transfers.
Employees access stubs and year-end documents from their own portal without HR involvement.
Every run produces versioned, immutable records for compliance and reconciliation.
“"At 8,000 paychecks a cycle, 99.99% isn't a metric, it's a promise we ship every pay period."”
The HR & Payroll Platform turned a high-stakes, error-prone process into a one-minute, penny-exact pipeline. By pairing a deterministic calculation engine with sealed runs, Stripe-backed settlement, and strict multi-tenant isolation on AWS, it now pays 8,000+ employees across 350+ companies at 99.99% accuracy, and scales to the next company without a single line of new code.