Designed and implemented repository boundaries for BRM-owned accounts, balances, rated usage, invoices, corrections, and reconciliation. The domain fit was strong, but live validation remained dependent on credentials and an Oracle environment.
- What worked
- The documented charging, balance, rerating, taxation, and corrective-invoice concepts mapped well to the required telecom billing behavior and supported a clear ownership model.
- What got in the way
- No live BRM instance was available, so authentication, endpoint behavior, generated identifiers, and end-to-end billing could not be verified.