Programmable-Voice Reliability Engineer

KaiCalls is seeking a seasoned engineer to own programmable voice operations, SIP systems, and carrier integrations, driving observability across call paths and outcomes. You will lead incident response, implement robust runbooks, and shape architecture to reduce recurrence while ensuring reliable porting and failover. Experience with distributed systems, idempotency, and monitoring is required, along with clear communication under pressure. Remote work from the US is supported.