Systems Administrator 3

RPMGlobal; Bethesda, Northern (MD, KY); Hybrid; USD 90,000 - 130,000; Full time

Job summary

RPMGlobal seeks a Systems Administrator 3 to support the OSINT Integration Center under the DOMEX Technology Platform. The role focuses on Linux/Windows system administration, performance tuning, and user support in a security-conscious environment.

You will build and maintain server environments, automate with Python and Bash, and manage Kubernetes-based platforms using Rancher and Helm while ensuring compliance and security requirements are met.

Qualifications

• Evidence of Linux system administration on RHEL/CentOS and Ubuntu.
• Strong scripting skills in Python and Bash.
• Experience with patching and virtual server builds.
• Familiarity with Agile project management and security needs.
• Good written and verbal communication.

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

Linux administration

Python scripting

Bash scripting

Communication skills

Independent & collaborative work

Air-gapped environments

Privileged User Account readiness

Education

Bachelor's degree in CS/Engineering/related field

Associate degree with 9+ years experience

High School Diploma + 9 years experience

Master's degree + 6 years experience

PhD + 6 years experience

Tools

Kubernetes

Rancher

Helm

Salt

Ansible

AWS

GitLab

Jenkins

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.