Platform Engineer

What You Will Own:

Linux Infrastructure OperationsFull lifecycle administration of ~222 Linux servers (production, QA, development)OS upgrades, patch management, and kernel updatesPerformance monitoring and system tuning (CPU, memory, disk I/O, network)User access management and authentication integrations (LDAP/AD)Backup validation and disaster recovery readinessKubernetes / OpenShift Platform OwnershipDeploy, administer, and support Kubernetes/OpenShift clusters across environmentsManage cluster lifecycle: installation, upgrades, patching, and scalingConfigure and maintain:

Namespaces, RBAC, and security policiesNetworking (CNI, ingress controllers, load balancing)Persistent storage (PVCs, storage classes)Support application teams with container deployments, troubleshooting, and performance tuningMonitor cluster health using tools like Prometheus, Grafana, and native OpenShift toolingOptimize cluster resource utilization and capacity planningImplement and maintain CI/CD integrations for containerized workloadsSecurity & HardeningImplement and maintain patching cadence across Linux and Kubernetes environmentsSystem hardening aligned to

CIS/STIG

best practicesSELinux configuration and enforcementFirewall configuration (iptables / firewalld)Kubernetes security best practices (RBAC, pod security standards, image scanning)Support vulnerability remediation from tools (Tenable, Qualys, etc.)Log monitoring and audit review across infrastructure and containersIncident Response & Production StabilityLead root cause analysis (RCA) for infrastructure and platform incidentsParticipate in on-call support for critical systems and clustersResolve Sev1/Sev2 outages across Linux and Kubernetes environmentsDevelop post-incident documentation and preventative controlsModernization & AutomationAssess and remediate deprecated platform componentsStandardize system and cluster configurationsBuild documentation and operational runbooksDrive infrastructure-as-code and automation initiatives (Ansible, Terraform, etc.)Support migration of legacy workloads to containerized platforms

UNIX & OS/400

(IBM) SupportAdminister UNIX environments (AIX/Solaris experience preferred)Support integrations with IBM i (OS/400) systems supporting Rail operationsEnsure proper update and lifecycle management across platformsMaintain cross-platform data and system dependencies