Systems Administrator 3

RPMGlobal; Bethesda, Northern (MD, KY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

RPMGlobal is seeking a Systems Administrator 3 to support the OSINT Integration Center under the DOMEX Technology Platform contract. The role concentrates on Linux/Windows administration, performance optimization, and user support, with emphasis on DISA STIG compliance and automation in cloud and on-premises environments.

You will develop and maintain server builds, manage Kubernetes-based platforms, and contribute to infrastructure automation using Salt, Ansible, Python, Bash, or PowerShell.

Qualifications

• Active TS/SCI with ability to obtain CI Polygraph.
• Bachelor's degree with a minimum of six years of experience; three additional years may substitute for the degree.
• Expertise in Linux systems administration (RHEL/CentOS and Ubuntu).
• Experience with patching and virtual server builds.
• Familiarity with Agile project management and security requirements derivation.
• Strong scripting skills in Python and Bash.
• Excellent verbal and written communication skills.
• Ability to work independently and collaboratively in a team environment.
• Experience in air-gapped environments.
• Ability to obtain Privileged User Account certification by the Government.

Responsibilities

• Perform Linux and Windows builds, installations, configurations, administration, and troubleshooting.
• Implement and enforce DISA STIG compliance across systems and networks.
• Develop and maintain server builds for virtual and physical environments.
• Manage and deploy Kubernetes, Rancher, and Helm.
• Develop scripts for patching, configuration, and automation using Python, Bash, or PowerShell.
• Use Salt and Ansible for infrastructure automation.
• Administer AWS cloud environments including provisioning, monitoring, and optimization.
• Provide service desk coverage between 6 AM and 6 PM, Monday through Friday, on a rotational basis.

Skills

Python scripting

Bash scripting

Linux system administration

Windows system administration

DISA STIG compliance

Agile project management

Cloud/AWS

Communication skills

Education

Bachelor's degree or equivalent experience

Tools

Kubernetes

Rancher

Helm

Salt

Ansible

AWS CloudFormation

ArgoCD

Jenkins

GitLab

ELK stack

Active Directory (Linux)

Job description

Position Summary

Support the OSINT Integration Center under the DOMEX Technology Platform contract as a Systems Administrator 3 focused on Linux and Windows systems administration, performance optimization, and user support.

Essential Duties and Responsibilities

• Perform Linux and Windows builds, installations, configurations, administration, and troubleshooting.
• Implement and enforce DISA STIG compliance across systems and networks.
• Develop and maintain server builds for virtual and physical environments.
• Manage and deploy Kubernetes, Rancher, and Helm.
• Develop scripts for patching, configuration, and automation using Python, Bash, or PowerShell.
• Use Salt and Ansible for infrastructure automation.
• Administer AWS cloud environments including provisioning, monitoring, and optimization.
• Provide service desk coverage between 6 AM and 6 PM, Monday through Friday, on a rotational basis.

Required Qualifications

• Active TS/SCI with ability to obtain a CI Polygraph.
• Bachelor's degree with a minimum of six years of experience in the category field. Three additional years of experience may be substituted for the bachelor's degree.
• Expertise in Linux systems administration, including RHEL/CentOS and Ubuntu.
• Experience with patching and virtual server builds.
• Familiarity with Agile project management and security requirements derivation.
• Strong scripting skills in Python and Bash.
• Excellent verbal and written communication skills.
• Ability to work independently and collaboratively in a team environment.
• Experience working in air-gapped environments.
• Ability to obtain Privileged User Account certification by the Government.

Preferred Qualifications

• Experience with Kubernetes, Rancher, and infrastructure-as-code tools such as AWS CloudFormation.
• Familiarity with ArgoCD, Jenkins, and GitLab.
• Knowledge of the ELK stack and beats.
• Experience with Active Directory in a Linux environment.
• Background maintaining AI/ML environments and large data storage solutions.

Required Education and Experience Equivalency

• High School Diploma/GED with 9 years of experience.
• Associates Degree with 9 years of experience.
• Bachelors' Degree with 6 years of experience.
• Masters' Degree with 6 years of experience.
• PhD with 6 years of experience.

RequiredCertifications

• None specified.

Required Security Clearance

• Active TS/SCI with ability to obtain a CI Polygraph.