Linux Systems Administrator SME - Active TS/SCI /w poly

Posted 5 Days Ago
Be an Early Applicant
Annapolis Junction, MD, USA
In-Office
170K-230K Annually
Expert/Leader
Aerospace • Information Technology • Professional Services • Security • Software
The Role
Lead Linux system administration for a mission-critical environment: install, configure, secure, patch, and automate Linux systems and virtualization. Troubleshoot networking, collaborate with developers and ISSO, maintain documentation, and support cloud and VM environments to ensure operational stability and compliance.
Summary Generated by Built In

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:

Linux, System Improvements, System Performance, Virtual Machines (VM)

Certifications:

None

Experience:

10 + years of related experience

US Citizenship Required:

Yes

Job Description:

SYSTEMS ADMINISTRATOR SME – LINUX

Grow your impact. Grow your career.
At GDIT, you’re not just maintaining systems — you’re supporting a mission that depends on rock‑solid Linux expertise. Join us as a Systems Administrator Linux SME on a long-standing Prime contract supporting a high‑visibility, mission-critical environment. You’ll work in a fast-paced setting where your decisions matter and your technical leadership is valued.

This is the place where Linux professionals build stability, expand their skills, and chart a long-term career path.

KEY RESPONSIBILITIES

System Administration
Install, configure, manage, and maintain Linux systems, including virtualization platforms and cloud computing environments.

Networking
Determine network specifications, input/output processes, and working parameters for hardware/software compatibility. Identify, analyze, and resolve network issues.

System Security
In coordination with the ISSO, implement security measures, conduct audits, and ensure compliance with customer security policies.

Collaboration
Partner with software developers and IT stakeholders to support system integration, patch workflows, and maintenance activities.

Automation
Develop and maintain scripts and automation tools that reduce manual effort and increase operational efficiency.

Patch Management
Maintain systems with software updates, patches, and upgrades while validating functionality and compatibility.

Documentation
Create and update system documentation including configurations, processes, and procedures.

WHAT YOU’LL NEED TO SUCCEED

Bring your Linux expertise and passion for innovation to an environment where your skills are both trusted and expanded.

• Bachelor’s degree in a technical field
• 10+ years of related experience
• SME-level proficiency with Linux operating systems
• Active TS/SCI with polygraph
• US citizenship
• Demonstrated experience with virtual machines, Thin Clients, switches, and networking responsibilities

DESIRED SKILLS

• Strong hands-on experience with AWS

WHY LINUX SMEs CHOOSE GDIT

Career Stability: Support a long-term Prime contract with continued mission funding and organizational investment.
Growth Opportunities: Work alongside top engineers, gain exposure to cloud environments, automation, new toolsets, and mission technologies.
Impactful Work: Your Linux expertise directly enables critical national‑level operations.
Technical Leadership: As an SME, your insights shape system architecture, integration, and modernization.
A Culture of Support: GDIT invests in training, certifications, and professional development to help you build your next career milestone.
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
● Flexibility: Full-flex work week to own your priorities at work and at home
● 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 $170,000 - $230,000. 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:

None

Telecommuting Options:

Onsite

Work Location:

USA MD Annapolis Junction

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 consulting, technology 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 capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

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

gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Skills Required

  • Bachelor's degree in a technical field
  • 10+ years of related experience
  • SME-level proficiency with Linux operating systems
  • Active TS/SCI with polygraph
  • US citizenship
  • Demonstrated experience with virtual machines and virtualization platforms
  • Experience with Thin Clients, switches, and networking responsibilities
  • Experience developing and maintaining scripts and automation tools
  • Experience with patch management and system upgrades
  • Strong hands-on experience with AWS

General Dynamics Information Technology Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about General Dynamics Information Technology and has not been reviewed or approved by General Dynamics Information Technology.

  • Affordable Benefits Pay and benefits are described as good or okay in multiple places, and the overall package is often portrayed as acceptable even when base pay is not viewed as top-tier.
  • Healthcare Strength Medical, dental, and vision plan options are presented as comprehensive, with additional protections like disability and life insurance contributing to a well-rounded health and protection offering.
  • Retirement Support A 401(k) plan with company match is consistently highlighted as part of the total rewards package, supporting longer-term financial planning.

General Dynamics Information Technology Insights

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The Company
HQ: Falls Church, VA
21,625 Employees

What We Do

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

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