Linux Administrator - Secret Clearance Required

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

Benefits offered by this job

Medical plan options

401(k) matching

Flexible work weeks

Paid time off and holidays

Dental plan options

Life and disability coverage

Job summary

General Dynamics Information Technology, Inc. seeks a Linux Administrator in Falls Church, VA to support the Infrastructure Management Monitoring Team.

The role focuses on maintaining Linux OS, patching, backups, monitoring, and security compliance in a mission-driven environment with senior leadership interaction. The successful candidate will work in a hybrid setting, demonstrate strong problem-solving, automation skills (Ansible, Puppet, Chef), and document procedures, performance metrics,

Qualifications

• 8+ years of experience administering RHEL 7/8 servers.
• Bachelor’s degree in IT, CS, or related field preferred.
• Experience with NFS/CIFS/SMB permissions and enterprise networks.

Responsibilities

• Administer Linux systems, install software, patching, and monitoring.
• Analyze and resolve OS, server, hardware and application issues.
• Perform backups, restore and verify system integrity.
• Configure automation with Ansible, Puppet, and Chef.
• Write shell scripts for automation and monitoring tasks.
• Maintain STIG compliance and security documentation.

Skills

Linux admin

Automation

Ansible

Puppet

Shell scripting

Security/STIG

Education

Bachelor's degree in IT, CS, or related

Tools

STIG Manager

RHEL 7/8

Job description

Job Description

Linux Administrator 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.

Responsibilities

• 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.

Qualifications & Requirements

• 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.


• 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.


• 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.


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

Work Location & Travel

Location: Falls Church, Virginia

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

Telecommuting Options: Hybrid Work Location: USA VA Falls Church

Compensation

Rate: $119,000 - $161,000 a year (salary will be based on experience, geographic location and possibly contractual requirements and could fall outside of this range).

Benefits

• 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.

Equal Opportunity

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans Opportunity Owned From working with technologies like AI, cyber and cloud to careers in intelligence and health, we offer endless opportunities to apply your expertise to create a safer, smarter world.

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.

Additional Information

Scheduled Weekly Hours: 40

Travel Required: Less than 10%