Own post-sale customer success for maritime IT and satellite communications clients. Manage onboarding, customer health, escalations, QBRs, reporting, renewals, advocacy, and expansion opportunities. Coordinate with Sales, Support, Managed IT, Product, and Engineering teams; monitor SLAs, uptime, utilization, fleet status, and satisfaction. Provide technical guidance across maritime networking, cybersecurity, managed IT, cloud backup, and connectivity services while maintaining executive relationships and reducing churn.