A Backend Developer Application for Payment Rails That Cannot Drop a Cent

A Backend Developer Application for Payment Rails That Cannot Drop a Cent A Backend Developer Application for Payment Rails That Cannot Drop a Cent A payment platform’s quietest operational risk is not always a dramatic outage. It is the duplicate charge hidden behind a retry, the webhook that arrives out of order, or the ledger correction discovered after finance has already closed the day. I wrote this application package for a remote Backend Developer role from that point of view: backend wor