Linux Administrator - Secret Clearance Required

General Dynamics Information Technology; Falls Church (VA); Hybrid; USD 119,000 - 161,000; Full time

Job summary

General Dynamics Information Technology is seeking a Linux Administrator to support the Infrastructure Management Monitoring Team in Falls Church, VA. You will maintain Linux operating systems, implement patches, monitor performance, and engage with senior military and government leadership to ensure mission success.

The role requires deep RHEL knowledge, DoD/STIG compliance, and strong automation skills. A Secret clearance is required, and the position offers hybrid telework with on-site

Qualifications

• Experience with Linux system administration and patch management.
• Experience with enterprise networks and storage.
• Familiarity with DoD/DoW security guidelines preferred.

Responsibilities

• Provide Linux system administration across RHEL environments, including patching and performance tuning.
• Monitor systems, troubleshoot alerts, and coordinate with data center personnel.
• Automate configurations and deployments using Ansible/Puppet/Chef.
• Maintain security baselines and STIG-compliant configurations.
• Create and sustain standard operating procedures and documentation.

Skills

Disaster Recovery (DR)

Enterprise Systems

Linux

RHEL

Education

Bachelor's degree in IT/CS or related field

High school diploma or AA

Tools

Ansible

Puppet

Chef

Job description

Job Description

Linux Administrator

Type of Requisition

Regular

Clearance Level Must Currently Possess

Secret

Clearance Level Must Be Able To Obtain

Secret

Public Trust/Other Required

None

Job Family

IT Infrastructure and Operations

Skills

Disaster Recovery (DR), Enterprise Systems, Linux, Red Hat Enterprise Linux (RHEL)

Certifications

None

Experience

6 + years of related experience

US Citizenship Required

Yes

We are seeking a Linux Administrator to support the Infrastructure Management Monitoring Team in Falls Church, Virginia. This role is critical to maintaining and supporting Linux operating systems. The ideal candidate is a proactive problem solver who thrives in a dynamic, mission-driven environment and can engage confidently with senior military and government leadership.

HOW A LINUX ADMINISTRTAOR WILL MAKE AN IMPACT

• Provide system administration support for Linux operating systems including installing software, applying patches, managing file systems, monitoring performance, and troubleshooting alerts from monitoring tools.
• Analyzes and resolves problems associated with the operating system, servers, hardware, and applications software. Detects, diagnoses, and reports related problems on servers, including system failure analysis and recovery, insuring the consistency and integrity of file systems.
• In-depth hardware configuration knowledge, shell programming expertise, and a solid understanding of standard concepts, practices, and procedures. Relies on experience and judgment to plan and accomplish goals, performs a variety of tasks, and works under general supervision.
• Responsible for daily monitoring of interface programs between multiple enterprise systems; review daily logs and ensure successful completion.
• Perform incremental and full cold backups/patching.
• Responsible for DoW Linux Security Technical Implementation Guides (STIGs).
• Provide performance metrics and usage charts, including CPU usage, disk usage and network uptime for the Linux Servers.
• Provide general maintenance, upgrades, and new installation of servers and coordinate with data center personnel to execute. Document and generate business processes for day-to-day and emergency support procedures.
• Install, test, and verify Linux Security patches; coordinating, documenting requirements and timelines, and working closely with service owners.
• Perform systems security administration functions, including creation and maintenance of customer profiles and accounts.
• Responsible for creating and/or maintaining standard operating procedures for the Linux documentation library.
• Implement, configure, update, and maintain Ansible servers and scripts.
• Implement, configure, update, and maintain STIG Manager servers and scripts.
• Implement, configure, update, and maintain the Linux operating system firewall.

WHAT YOU’LL NEED TO SUCCEED

Education/Equivalent Training Required

• High school diploma or AA. Preferred - Bachelor’s degree in information technology, computer science or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience.

Required Experience

• 8+ years of overall demonstrated experience as a RHEL 7 and/or RHEL 8 Servers

Required Technical Skills Requirements

• Experience administering RHEL 7/8 Linux servers and applying Linux best practices
• Experience in handling NFS, CIFS, and SMB permissions.
• Strong Linux administration skills with knowledge of enterprise network architectures
• Hands-on experience with automation/configuration tools (Ansible, Puppet, Chef)
• Skilled in scripting for automation (Bash, Ruby, Python, Perl)
• Solid understanding of Linux internals (system calls, file systems, processes)
• Working knowledge of TCP/IP and related protocols (HTTP, FTP, NFS)
• Experience using PowerShell for task automation
• Excellent problem-solving, analytical, and decision-making skills
• Reliable and responsive, consistently meeting expectations and following direction
• Strong customer service skills; able to engage senior military and government leaders
• Able to present ideas clearly in briefings, meetings, and leadership interactions
• Capable of delivering training sessions as needed
• Experienced in coordinating with stakeholders to meet deadlines and objectives
• Excellent communication and documentation abilities
• Strong organizational, collaborative, and team-oriented mindset
• Able to quickly absorb information and self-learn new requirements
• Maintains current industry knowledge and professional certifications
• Able to work under time constraints and adapt to changing requirements
• Experience leading or managing teams

Certification Requirements

• Must Possess the appropriate baseline certification(s) to achieve DoW 8570.01-M Information Assurance Technical (IAT) Level II (CompTIA Security+ ce) and additional Computing Environment (CE) certification (RHEL7 and/or RHEL 8) When 8140 requirements are implemented on program/contract, employee will need to conform to 8140 certification standards.

Security Clearance Level Requirements

• Must have a minimum of an active Secret clearance at time of interview and candidate must maintain active clearance.

Location

• Falls Church, Virginia

Travel

• Up to 10%. Travel may include attending conferences up to two times annually and site visits as needed.

#GDIT

The likely salary range for this position is $119,000 - $161,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours

40

Travel Required

Less than 10%

Telecommuting Options

Hybrid

Work Location

USA VA Falls Church

Additional Work Locations

Total Rewards At GDIT

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Our Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

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Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans