The System Engineer – L3 End-to-End Support Expert is a senior technical role responsible for supporting complex enterprise production environments across applications, Linux, Kubernetes, cloud, infrastructure, networking, integrations and monitoring. The role combines expert-level L3 production Support, proactive system reliability, cloud/infrastructure operations and deployment capabilities for enterprise-scale AMI and utility solutions. The engineer operates as part of our global 24/7/365 Follow-the-Sun Support organization and takes end-to-end technical ownership of complex incidents and customer escalations. ZONOS and customer-specific knowledge is not required at recruitment and will be acquired through structured transition, knowledge transfer and hands-on experience. Role Summary: Level 3 End-to-End Support provides expert-level technical Support for complex and critical production issues across the complete solution stack. The role is responsible for: · Complex end-to-end troubleshooting and root-cause analysis · Production reliability and availability · Application and backend Support · Linux and operating-system troubleshooting · Kubernetes · Cloud and infrastructure · Networking · Monitoring and observability · Automation · HA and disaster recovery · Security and performance · Technical customer communication · SLA-driven incident management The objective is not only to restore service but to identify the root cause, implement sustainable solutions, prevent recurrence and continuously improve service reliability and supportability.