DevOps Engineer

ManTech; Chantilly (NC); On-site; USD 115,000 - 190,000; Full time

Benefits offered by this job

Health Insurance

Life Insurance

Paid Time Off

Holiday Pay

Disability insurance

Retirement and Savings

Job summary

MANTECH is hiring a DevOps Engineer to manage bare-metal Linux servers and multi-cluster Kubernetes in air-gapped environments. You will build and maintain GPU-enabled infrastructure and GitOps pipelines using ArgoCD, Rancher, and standard CI/CD tools.

Ideal candidates have 4+ years of Linux admin experience, 2+ years Kubernetes experience (CKA optional), and familiarity with GitLab/Bitbucket. Onsite role in Herndon, VA with comprehensive benefits and security clearances.

Qualifications

• 4+ years Linux system administration experience
• Experience in Enterprise Linux environments
• 2+ years Kubernetes experience or active CKA credential
• 1+ years experience with GitLab or Bitbucket for CI/CD workflows
• Bachelor’s Degree in CS or related field (preferred)
• Experience deploying in air-gapped networks and implementing GitOps pipelines

Responsibilities

• Administer, secure, and maintain bare-metal servers running Enterprise Linux
• Provision, upgrade, and manage multi-cluster Kubernetes environments using Rancher
• Develop YAML manifests and Helm charts for Kubernetes resources
• Build GitOps-driven deployment pipelines with ArgoCD
• Maintain CI/CD pipelines and version control workflows using GitLab or Bitbucket
• Document work in JIRA and Confluence

Skills

Linux Administration

Kubernetes

GitOps

CI/CD

Education

Bachelor’s Degree in Computer Science or related field

Tools

Rancher

ArgoCD

Git

Job description

General information

Requisition # R71781

Locations USA-VA-Chantilly

Posting Date 10/30/2026

Security Clearance Required TS/SCI w/ Poly

Remote Type Onsite

Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

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.

The projected compensation range for this position is $114,600.00-$190,200.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.

In addition, MANTECH invests in its employees beyond just compensation.

• Health Insurance
• Life Insurance
• Paid Time Off
• Holiday Pay
• short-term and long-term Disability
• Retirement and Savings
• Learning and Development opportunities
• wellness programs
• other optional benefit elections

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.