Senior Systems Administrator

Job Summary:

The Senior Systems Administrator provides expert-level support for UNIX/Linux systems across the Defense Logistics Agency's (DLA) enterprise environments, including NIPRNet and SIPRNet. This position is critical to ensuring stability, performance, security, and continuous operation of mission-critical infrastructure in support of DLA's Technology Foundation Services. The administrator will perform hands-on system installation, configuration, and maintenance while ensuring compliance with Department of Defense (DoD) cybersecurity standards and enterprise IT policies.

*This position is contingent upon contract award*

Job Duties and Responsibilities:

• Plan, install, configure, maintain, and optimize UNIX and Linux systems, including Red Hat Enterprise Linux (RHEL), HP-UX, and Solaris.
• Monitor system performance, logs, and alerts; troubleshoot and resolve system faults and outages.
• Apply security patches, perform upgrades, and implement configuration changes to maintain system integrity and compliance.
• Ensure compliance with DISA Security Technical Implementation Guides (STIGs), Assured Compliance Assessment Solution (ACAS) findings, and other DoD cybersecurity requirements.
• Manage user accounts, privileges, and access controls via Red Hat Identity Manager (IDM).
• Implement and support COTS applications including HBSS, Splunk, ArcSight, and Trellix as required.
• Support backup and disaster recovery operations, including participation in COOP and DR planning and testing.
• Automate routine administrative tasks using scripts and system management tools.
• Collaborate with government system administrators and stakeholders on technical projects, system architecture, and configuration decisions.
• Provide technical documentation, support change management processes, and participate in infrastructure reviews and audits.
• Other duties as assigned.

Job Requirements (Education/Skills/Experience):

• Clearance: Must possess an active DoD Secret clearance
• Education: Bachelor's degree in a technical discipline.
• Experience: Minimum of 10 years of specialized IT experience, with at least 4 years of hands-on experience in installing, configuring, maintaining, and troubleshooting enterprise systems.
• Certifications: RHCSA (Red Hat Certified System Administrator) or CompTIA Linux+, issued by a nationally recognized technical authority.
• Technical Skills:
  • Advanced knowledge of Red Hat Linux (v7+), HP-UX (v11.31+), and Solaris (v11+).
  • Experience with system clustering, virtualization, high availability, and load balancing.
  • Familiarity with enterprise IT monitoring and security tools, including log analysis and vulnerability remediation.

Diné Development Corporation (DDC) is a Navajo Nation owned family of companies that delivers IT, professional, and environmental solutions to advance the missions of federal, state, and tribal government agencies. As thought leaders and innovators, our team of specialists build client-centric solutions that solve critical challenges faced by defense, civilian, and healthcare organizations. Employing a mission-focused approach, we deliver value that not only enhances current operations, but also drives future change. Closely aligned with this approach is our commitment to advancing the Navajo Nation and its People. Through economic development and community empowerment, we elevate the Navajo Nation to provide lasting impact and sustainable growth for future generations. DDC's ability to unite legacy-inspired technologies, industry best practices, and proven methodologies has contributed to our success for twenty years.

This contractor and subcontractor shall abide by the requirements of 41 CFR 60-1.4(a), 60-300.5(a) and 60-741.5(a). These regulations prohibit discrimination against qualified individuals based on their status as protected veterans or individuals with disabilities, and prohibit discrimination against all individuals based on their race, color, religion, sex, sexual orientation, gender identity, national origin, or for inquiring about, discussing, or disclosing information about compensation, or any other basis prohibited by law. We participate in E-Verify.