Senior Linux Systems Administrator

The One 23 Group; Arlington (VA); Hybrid; USD 120,000 - 180,000; Full time

Job summary

The One 23 Group in Arlington, VA seeks an experienced RHEL systems administrator to design, implement, and support enterprise Linux environments for DoD, IC, and Federal Civilian clients. You will lead automation, virtualization, and backup strategies while ensuring cybersecurity compliance.

Responsibilities include overseeing RHEL administration, applying STIG controls, and guiding junior staff. A Top-Secret clearance with SCI indoctrination is required, along with DoD 8140/8570 IAT-II

Qualifications

• Top-Secret clearance with SCI indoctrination
• DoD 8140/8570 IAT-II Certification (Security+ preferred)
• High School Diploma or equivalent
• 10 years of information technology experience

Responsibilities

• Oversee system administration tasks for multiple RHEL versions with a team
• Implement STIGs to support IAVM and information assurance
• Provide leadership on key tasks and projects and communicate with stakeholders
• Analyze diagnostics and performance, perform upgrades and patch management
• Troubleshoot incidents and document responses, develop standards for RHEL resources
• Plan and execute system upgrades and migrations with customer involvement
• Develop, install, and monitor RHEL systems and subsystems with dev teams
• Support cybersecurity efforts and monitor system security
• Guide junior staff and provide practical solutions for issue resolution

Skills

RHEL administration

VMware

Security+

Perl scripting

Education

DoD 8140/8570 IAT-II Certification

High School Diploma

Tools

NetApp

VMware

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 Defense, 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 JSSC operations.

RESPONSIBILITIES

• 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 JSSC 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
• Video interviews will be conducted

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.