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Linux Security Engineer Jobs in Virginia (NOW HIRING)

CACI

Senior Linux Engineer

Chantilly, VA · On-site

Security+ CE Certification (or other IAT Level II or III Certification) at a minimum; Red Hat Certified Engineer (RHCE), or Linux Professional Institute Certification (LPIC-3) Demonstrated experience ...

Verizon

Senior Detection Engineer

Ashburn, VA · On-site

$106K - $146K/yr

Linux Security Mastery: You will work primarily on linux-based systems developing detections and investigating EDR-based alerts and detections. * Data Engineering: Analyze, normalize and utilize data ...

VTG

Information Systems Security Engineer

Herndon, VA · On-site

Knowledge of operating systems (Windows, Linux) and network security principles * Experience with ... security engineering * Hands-on experience with RMF and NIST 800-53 controls * Experience ...

VTG

Information Systems Security Engineer

Mclean, VA · On-site

Knowledge of operating systems (Windows, Linux) and network security principles * Experience with ... security engineering * Hands-on experience with RMF and NIST 800-53 controls * Experience ...

Verizon Communications

Senior Detection Engineer

Ashburn, VA · On-site

$106K - $146K/yr

Linux Security Mastery: You will work primarily on linux-based systems developing detections and investigating EDR-based alerts and detections. Data Engineering: Analyze, normalize and utilize data ...

GlobalXperts

Security Engineer

Reston, VA · On-site

Designs, develops, engineers, and implements solutions that meet security requirements. * Analyzes ... Experience in Unix and Linux system administration desired * Background in INFOSEC operations ...

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Linux Security Engineer information

What is a Linux security engineer?

Linux Security Engineers are IT professionals who specialize in protecting Linux-based systems and networks from security threats. They are responsible for designing, implementing, and maintaining security measures such as firewalls, intrusion detection systems, and vulnerability assessments. These engineers monitor system activity, respond to security incidents, and ensure compliance with security policies and regulations. Their expertise helps organizations keep their Linux infrastructure secure from both internal and external risks.

What are the key skills and qualifications needed to thrive as a Linux security engineer?

To thrive as a Linux Security Engineer, you need expertise in Linux system administration, cybersecurity principles, and vulnerability management, often supported by a degree in computer science or related certifications like CompTIA Security+ or RHCE. Familiarity with security tools such as SELinux, firewalls, intrusion detection systems (IDS), and scripting languages (e.g., Bash, Python) is typically required. Strong problem-solving abilities, attention to detail, and effective communication skills help you respond to incidents and collaborate with IT teams. These competencies are essential to protect systems, minimize risks, and ensure the security and integrity of critical infrastructure.

How does a Linux security engineer typically collaborate with other IT teams to enhance system security?

Linux Security Engineers work closely with network administrators, system administrators, and development teams to implement robust security measures. They often participate in cross-functional meetings to review security protocols, respond to incidents, and ensure compliance with company policies. Collaboration may involve conducting security audits, providing guidance on secure coding practices, and coordinating vulnerability assessments. This teamwork is essential to maintaining a secure infrastructure and promptly addressing emerging threats.

What is the difference between Linux Security Engineer vs Linux System Administrator?

AspectLinux Security EngineerLinux System Administrator
CertificationsCompTIA Security+, CISSP, Linux+Linux+, LPIC, RHCSA
Primary FocusSecurity vulnerabilities, threat mitigation, security policiesSystem setup, maintenance, user management
Work EnvironmentSecurity teams, cybersecurity firms, IT security departmentsIT departments, data centers, enterprise networks
ResponsibilitiesImplementing security measures, monitoring threats, incident responseInstalling OS, configuring servers, managing user access

The Linux Security Engineer specializes in protecting Linux systems from security threats, focusing on vulnerabilities and incident response. In contrast, the Linux System Administrator manages overall system health, setup, and maintenance. While both roles require Linux knowledge, security engineers focus more on safeguarding systems, whereas administrators ensure operational functionality.

What cities in Virginia are hiring for Linux Security Engineer jobs?

Cities in Virginia with the most Linux Security Engineer job openings:

Infographic showing various Linux Security Engineer job openings in Virginia as of August 2026, with employment types broken down into 86% Full Time, 11% Part Time, and 3% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution.

Linux Systems Engineer - TS/SCI with Polygraph

Chantilly, VA • Hybrid

GDIT
IT Services • 10K+ employees
Learn more about GDITexternal

$140K - $190K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted yesterday

General Dynamics Information Technology rating

7.8

Company rating: 7.8 out of 10

Based on 63 frontline employees who took The Breakroom Quiz

Job description

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

IT Infrastructure and Operations

Job Qualifications:

Skills:

LDAP Integration, Red Hat Enterprise Linux (RHEL), VMware

Certifications:

None

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

Deliver simple solutions to complex problems as a Linux Systems Engineer at GDIT. Here, you'll tailor cutting-edge solutions to the unique requirements of our clients. With a career in systems engineering, you'll make the integration of mission platforms your priority and we'll make your career growth ours.
At GDIT, people are our differentiator. As a Linux Systems Engineer you will help ensure today is safe and tomorrow is smarter. Our work depends on a Linux Systems Engineer joining our team to provide timely solutions for our mission infrastructure.


HOW A LINUX SYSTEMS ENGINEER WILL MAKE AN IMPACT

  • Designs and defines system architecture for new or existing computer systems
  • Coordinates system development to include design, modeling, security, integration, and formal testing
  • Contributes to completion of major engineering programs and projects
  • Develops solutions to a variety of highly complex engineering problems
  • Oversees highly complex infrastructure including installing, configuring, testing, and maintaining operating systems, application software, and system management tools
  • Performs continual maintenance and provides highly complex solutions for security, backup, and redundancy problems
  • Prepares and maintains documentation for processes and procedures related to engineering projects

WHAT YOU'LL NEED TO SUCCEED:

  • Education: Bachelor's degree in Engineering, Computer Science, or other related analytical, scientific, or technical discipline
  • Required Experience: 8+ years of related experience
  • Required Technical Skills: Strong experience with Red Hat Enterprise Linux; experience with NFS, AD/LDAP integration, Web Servers, certificates, LVM, VMware, Linux security hardening, Red Hat Satellite Server, Cloud and/or Hybrid-Cloud deployments, configuring storage over Fiber Channel
  • Security Clearance Level: TS/SCI with Polygraph
  • Required Skills and Abilities: Works independently under limited supervision, possess current DoW IAT II Level certification
  • Preferred Skills: Experience with Ansible, kickstart deployments, Big Data solutions, containerization, Terraform, Splunk, AWS/Azure, and/or HPE storage solutions
  • Location: On Customer Site
  • US Citizenship Required


GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.

  • Growth: AI-powered career tool that identifies career steps and learning opportunities
  • Support: An internal mobility team focused on helping you achieve your career goals
  • Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
  • Community: Award-winning culture of innovation and a military-friendly workplace


OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you'll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

The likely salary range for this position is $140,821 - $190,523. 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:

None

Telecommuting Options:

Onsite

Work Location:

USA VA Chantilly

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.Join our Talent Community to stay up to date on our career opportunities and events at

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Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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About General Dynamics Information Technology

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GDIT is 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. Its 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. The company operates across 50+ countries worldwide, offering leading capabilities in digital modernization, AI/ML, cloud, cyber, and application development.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Falls Church, VA, US

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