Senior Systems Administrator

The One 23 Group; Arlington (VA); On-site; USD 120,000 - 150,000; Full time

Job summary

The One 23 Group seeks an experienced Senior RHEL Administrator to design, implement, and secure enterprise Linux environments at the Pentagon.

The role requires deep knowledge of RHEL, VMware virtualization, NetApp backup strategies, and leading a team to deliver reliable, compliant systems while communicating complex issues to contract leaders and customers.

Qualifications

• Active Top-Secret clearance with SCI indoctrination.
• DoD 8140/8570 IAT-II Security+ certification.
• 10 years of information technology experience.
• Deep knowledge of RHEL system administration and virtualization.

Responsibilities

• Oversee system administration tasks with a team of technicians.
• Implement STIG/IAVM controls to support information assurance.
• Lead major tasks and communicate complex issues to customers.
• Analyze diagnostics and upgrades to improve reliability of RHEL systems.
• Document responses and develop upgrade strategies for RHEL resources.
• Monitor performance and support cybersecurity efforts.

Skills

RHEL system administration

VMware virtualization

Security STIG/IAVM

Team leadership

Customer communication

Patch management

Troubleshooting

Education

High School Diploma

CompTIA Security+ CE (IAT-II)

Tools

VMware

NetApp

Job description

At The One 23 Group, our mission is to set the benchmark for excellence in government services. We empower our clients in the Department of War, Intelligence Community, and Federal Civilian sectors to excel with our advanced capabilities. Our dedication lies in fostering a people-first culture, underpinned by steadfast ethical principles. Embracing innovative technologies and process improvements, we are steadfast in our journey toward a future that is both bright and transformative.

Our expertise spans Enterprise IT, Mission IT and Cyber. With our global footprint, we place a strong emphasis on nurturing our people and culture, which forms the core of our successful strategies in leadership and financial management. We pride ourselves on our extensive experience and effective approach, ensuring that we lead with both innovation and integrity.

The Position:

The expert will have strong knowledge of Red Hat Enterprise Linux (RHEL) systems and will be able to design and implement automation scripts. They should also understand virtualization systems (like VMWare) and enterprise backup/restoration strategies (preferably using NetApp). This role involves providing high-level technical support and guidance for RHEL Operating Environments, related systems, and middleware, focusing on system administration for contract specific operations.

Requirements

• Oversee key system administration tasks with a team of technicians, managing various versions of RHEL operating systems, supporting tools, middleware, and user privileges.
• Participate in change and configuration control processes and implement Security Technical Implementation Guides (STIG) to support Information Assurance Vulnerability Management (IAVM).
• Provide leadership on major tasks and technology projects to maintain systems and applications. Communicate with customers and contract leaders about complex technical issues, ensuring cybersecurity standards are met for the contract and its customers.
• Analyze application diagnostics and system performance, resolving challenges with RHEL utilities and software upgrades to improve reliability.
• Troubleshoot incidents related to RHEL systems and document responses, developing strategies and standards for RHEL resources.
• Create and oversee system upgrades, identifying needs and planning effectively to meet customer requirements.
• Develop, install, and monitor RHEL systems, migrating application subsystems and working with customers and development teams on improvements.
• Conduct performance monitoring and support cybersecurity efforts to maintain system security.
• Evaluate and recommend software, guidelines, and project plans to junior staff, providing solutions for prompt issue resolution, patch management, and administrative support.

Additional Information:

• Position located on-site at the Pentagon

Requirements

• Minimum active Top-Secret Clearance with the ability to be Sensitive Compartmented Information (SCI) indoctrinated; AND,
• DoD 8140/8570 Information Assurance Technical Level II (IAT-II) CompTIA Security+ CE Certification; AND,
• High School Diploma; AND,
• 10 years of information technology experience.

Preferred

• PERL Scripting Experience.