DevOps Engineer

MANTECH•Chantilly, VA

9d•$114,600 - $190,200•Onsite

About The Position

MANTECH is seeking a motivated, career- and customer-oriented DevOps Engineer to join its team in Herndon, Virginia. The role manages bare-metal Linux and Kubernetes infrastructure end to end, integrates GPU-accelerated nodes, and streamlines application deployments through automated GitOps workflows. The work supports high-performance computing capabilities in highly secure, air-gapped environments. The position requires a current and active TS/SCI with polygraph clearance. The person must be able to remain stationary 50% of the time. The job is listed as onsite and full-time. The projected compensation range is $114,600–$190,200. Benefits may include health and life insurance, paid time off, holiday pay, short- and long-term disability, retirement and savings, learning and development opportunities, wellness programs, and other optional benefit elections, depending on position.

Requirements

High school diploma and at least 4 years of Linux system administration experience.
Experience with Enterprise Linux.
At least 2 years of hands-on Kubernetes experience, or an active Certified Kubernetes Administrator (CKA) credential.
At least 1 year of experience managing version control workflows, repository management, and CI/CD pipeline integrations using GitLab or Bitbucket.
Current and active TS/SCI with polygraph clearance.
Ability to remain in a stationary position 50% of the time.

Nice To Haves

Bachelor’s degree in Computer Science or a relevant technical field.
Experience deploying, patching, and maintaining Linux and Kubernetes infrastructure in an air-gapped network with no internet connectivity.
Experience implementing GitOps-driven deployment pipelines and automated cluster synchronization via ArgoCD.
Experience configuring Kubernetes worker nodes with NVIDIA GPUs, including installing and troubleshooting the NVIDIA Container Toolkit, CUDA drivers, and GPU operators.
Experience using bare-metal IPMI/iLO/iDRAC for out-of-band server hardware management, remote console and firmware management, and telemetry monitoring.
Experience with multi-cluster administration, ingress control, and configuring RBAC security policies via Rancher.

Responsibilities

Administer, secure, and maintain bare-metal servers running Enterprise Linux 8 and 10.
Provision, upgrade, and manage multi-cluster Kubernetes environments using Rancher.
Develop scalable YAML manifests and Helm charts to deploy and manage Kubernetes resources, including StatefulSets, Deployments, DaemonSets, ConfigMaps, Secrets, and Persistent Volumes.
Build and maintain GitOps-driven deployment pipelines and automated cluster synchronization using ArgoCD.
Integrate standard CI/CD pipelines and version control workflows using Git.
Document work in JIRA and Confluence.