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Simply Business — Ancillary Commission Engine ·

An event-driven, scalable system that automatically generates commission for ancillary insurance products. Replaces a manual reconciliation process and handles thousands of daily transactions with full auditability.

Role
Software Engineer
Duration
2021 – 2025
GitHub
100%
Transaction accuracy at scale
Ruby on RailsRubyPostgreSQLRs

Technologies used

Ruby on RailsRuby on RailsRubyRubyPostgreSQLPostgreSQLRSpec

Key features

  • Event-driven architecture for commission accrual
  • 100% transaction accuracy across thousands of daily events
  • Auditable history per product and partner
  • Replaced manual reconciliation, freeing up finance ops

What I learned

Money systems have to be boring. Idempotency, event ordering and replay-ability mattered far more than throughput — designing for correctness first paid off every time we extended it.