Senior System Administrator

What You Will Do

We are actively seeking a Senior System Administrator to support the operation and sustainment of mission-critical IT systems. In this role, you will be responsible for maintaining system availability, ensuring security compliance, and managing efficient configuration across diverse environments. Key duties include monitoring the health and performance of hardware and software, automating deployments of baselines and patches, resolving system issues, and coordinating scheduled events across client, server, storage, network, and mobile platforms.

As a Senior System Administrator, you will oversee the full operational lifecycle of development and test environments supporting a critical national defense mission. Your work will ensure system reliability and compliance by managing configurations, maintaining baselines, and collaborating closely with engineering and cybersecurity teams.

Key Responsibilities :

Maintain and monitor the health and status of client / server / storage / network systems.

Automate baseline configurations, deployments, and patching using tools like Ansible.

Manage virtualization and containerization technologies (VMware / ESXi, Docker).

Support Windows, Active Directory, and Linux systems (RHEL, Rocky, Ubuntu).

Execute system inventory and configuration audits.

Collaborate with ISSOs to ensure compliance with security policies and standards.

Utilize CI / CD pipelines (e.g., GitLab) for system and software deployments.

Respond to service requests and incidents using ticketing systems.

Document system configurations, standard operating procedures, and change requests.

Support disaster recovery planning and incident response activities.

Present system status, updates, and metrics to stakeholders and leadership.

Required Skills and Qualifications :

Minimum of 20 years of experience as a System Administrator supporting programs of similar scope and complexity (4 years may be substituted with a relevant degree).

Strong knowledge of Linux system administration, particularly RHEL, Rocky, or Ubuntu.

Experience with configuration management and automation tools (e.g., Ansible).

Proficient in virtualization tools and environments (e.g., VMware, ESXi).

Understanding of Active Directory, CI / CD processes, and scripting.

Familiarity with DoD or NSA frameworks, including tools such as BISCOTTI, XACTA, and Latte-Arte.

Ability to work collaboratively and communicate effectively with developers, stakeholders, and leadership.

Strong organizational and documentation skills.

Desired Skills

Experience with GitLab CI / CD pipelines.

Proficiency with Atlassian Suite (JIRA, Confluence).

Familiarity with Nessus or other compliance tools.

Background in security design, disaster recovery planning, or system hardening.

Education and Experience :

Bachelor's degree in Computer Science or related discipline

(Four additional years of relevant experience may substitute for a degree.)

Certifications :

Must meet DoD 8570 IAT Level II requirements (e.g., CompTIA Security+ CE)

Clearance Requirement :

Must possess an active TS / SCI with appropriatePolygraph tobe considered for this role

We're an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

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