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.