U.S.-based Senior Engineer role requiring 5+ years of experience in DevOps/Platform/SRE work. Responsibilities include architecting and operating Kubernetes clusters (production-grade, multi-tenant), implementing Infrastructure as Code (Terraform/Ansible), building CI/CD and GitOps workflows (GitLab Runners, Argo CD/Flux), and deploying observability tooling (Prometheus, Grafana, Fluent Bit, Loki, Kibana). Must be U.S. citizen, work within the continental U.S., and possess an active Secret clearance.