SYSTEM Administrator – Linux​/Rhel - 15 yrs of Experience - TS​/SCI w​/Poly Clearance is Required - TB - 0446

SYSTEM ADMINISTRATOR –Linux/RHEL - 15 yrs of Experience - TS/SCI w/Poly clearance is required - TB - 0446

Posted On 08/12/2026

Technology

Work Experience 10-15 Years

200K-212K

City Annapolis Junction

State/Province Maryland

20701

System Administrator –LINUX/RHEL - 15 yrs of Experience - TS/SCI w/Poly Required

Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems. Manages IT system infrastructure and any processes related to these systems. Provides support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc. Provides Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis and resolution of problems. Provides support for the escalation and communication of status to agency management and internal customers.

Provides support for the dispatch system and hardware problems and remains involved in the resolution process. Configures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance.

Location: Annapolis Junction, MD

Travel Required: No

Shift: Day

Remote Type: Onsite

Security Clearance: Current TS/SCI

Polygraph: Required

Salary Range

The projected compensation range for this position is 200K-212K (annualized USD).

Salaryis determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements.

Experience with the following:

• Heavy Linux (RHEL)
• Ansible
• STE/STN
• Satellite Server

1. Provide support for implementation, troubleshooting and maintenance of IT systems

2. Provide Tier 1 (Help Desk) problem identification, diagnosis and resolution of problems

3. Manage the daily activities of configuration and operation of IT systems

4. Provide assistance to users in accessing and using IT systems

5. Provide Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis and resolution of problems (U) Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc.

6. Provide support for the escalation and communication of status to agency management and internal customers

7. Optimize system operations and resource utilization, and perform system capacity analysis and planning

8. Provide in-depth experience in trouble‑shooting IT systems

9. Provide detailed analysis and feedback to agency management and internal customers for escalated tickets

10. Provide support for the dispatch system and hardware problems and remains involved in the resolution process

11. Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance

12. Support the design of systems, mission architecture and associated hardware

13. Possess a working knowledge and understanding of system administration interdependencies as part of the Service Oriented Architecture (SOA)

14. Analyze and resolve complex problems associated with server hardware, applications and software integration

• Fifteen (15) years' experience as an SA in programs and contracts of similar scope, type, and complexity is required.
• Bachelors degree in a technical discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a bachelors degree.
• DoD 8570 compliance with Information Assurance Technical (IAT), Level I or higher is required.

Care First Insurance

Medical Plans

• Three available medical plans–2 Platinum PPO Plans ($0 Deductible) and 1 HSA Plan ($1500 deductible)
• Halogen pays 100% Medical Premium Costs up to $25,000
• Care First Wellness Rewards Program
• Halogen pays 50% of the plan costs

Vision Plan

• Halogen pays 100% of the plan costs

401K Retirement Plan

10% contribution paid by the company, automatically vested and paid in each pay period.

Life Insurance, AD&DD, Short and Long Term Disability Coverage

Paid Time Off

Based on performance and billable hours

Halogen Engineering Group does not discriminate in employment on the basis of race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service, or other non-merit factor.