DevOps Engineer

MANTECH seeks a motivated, career and customer-oriented *DevOps Engineer* to join our team in *Herndon, Virginia.* In the role of DevOps Engineer, you will be responsible for the end-to-end management of our bare-metal Linux and Kubernetes infrastructure. You will drive innovation by seamlessly integrating GPU-accelerated nodes and streamlining application deployments through automated GitOps workflows. Your expertise in Kubernetes and infrastructure automation will directly enable our high-performance computing capabilities within highly secure, air-gapped environments. *Responsibilities include but are not limited to:* * Administer, secure, and maintain bare-metal servers running Enterprise Linux 8 and 10. * Provision, upgrade, and manage multi-cluster Kubernetes environments utilizing Rancher. * Deploy and manage core Kubernetes resources by developing scalable YAML manifests and Helm charts, including , including StatefulSets, Deployments, DaemonSets, ConfigMaps, Secrets, and Persistent Volumes. * Build and maintain GitOps-driven deployment pipelines and automated cluster synchronization using ArgoCD. * Integrate and maintain standard CI/CD pipelines and version control workflows via Git. * Document all work in JIRA and Confluence *Minimum Qualifications:* * High School Diploma and 4+ years of Linux system administration experience. * Experience in Enterprise Linux. * 2+ years of hands-on Kubernetes experience, or an active Certified Kubernetes Administrator (CKA) credential * 1+ years’ experience managing version control workflows, repository management, and CI/CD pipeline integrations using GitLab or Bitbucket. *Preferred Qualifications:* * Bachelor’s Degree in Computer Science or relevant technical field. * Experience deploying, patching, and maintaining Linux and Kubernetes infrastructure within an air-gapped network environment with zero internet connectivity. * Experience implementing GitOps-driven deployment pipelines and automated cluster synchronization via ArgoCD. * Experience configuring Kubernetes worker nodes with NVIDIA GPUs, including the installation and troubleshooting of the NVIDIA Container Toolkit, CUDA drivers, and GPU operators. * Experience utilizing bare-metal IPMI/iLO/iDRAC for out-of-band server hardware management, remote console/firmware management, and telemetry monitoring. * Experience handling multi-cluster administration, ingress control, and configuring RBAC security policies via Rancher *Clearance Requirements:* * Current/active TS/SCI with polygraph clearance is required. *Physical Requirements:* * The person in this position must be able to remain in a stationary position 50% of the time.