Senior System Administrator with DoD Security Clearance

RealmOne; Baltimore (MD); On-site; USD 120,000 - 160,000; Full time

Job summary

RealmOne is seeking a seasoned Systems Administrator for a mission-critical contract to support full life cycle IT resources across UNIX, Linux, and Windows environments. The role emphasizes Tier 1/2 help desk, problem diagnosis, and escalation with a focus on infrastructure reliability and performance.

The ideal candidate holds a technical bachelor’s degree with 15 years SA experience and DoD 8570 IAT II certification, plus ITIL 4 and an active polygraph-enabled security clearance.

Qualifications

• Bachelor's degree in a technical discipline is required; four (4) years of additional SA experience may substitute for a bachelor’s degree.
• Fifteen (15) years experience as a SA in programs and contracts of similar scope, type, and complexity is required.
• Six (6) years of experience with Service Management (ITSM) is required. Requires DoD 8570 IAT Level II certification.
• ITIL 4 certification is required; active security clearance with appropriate polygraph.

Responsibilities

• Provides Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis and resolution of problems.
• Provides support for implementation, troubleshooting and maintenance of IT systems, managing IT system infrastructure and related processes.
• Configures and manages UNIX, Linux and Windows operating systems and installs/loads operating system software, troubleshoots and maintains integrity.
• Supports dispatch system and hardware problems and remains involved in the resolution process.

Skills

DoD 8570 compliance

IAT Level II

ITIL 4

Active security clearance

Security clearance

Education

Bachelor's degree in a technical discipline

Job description

RealmOne is seeking a seasoned Systems Administrator for a mission-critical contract to support full life cycle IT resources across UNIX, Linux, and Windows environments. The role emphasizes Tier 1/2 help desk, problem diagnosis, and escalation with a focus on infrastructure reliability and performance.

The ideal candidate holds a technical bachelor’s degree with 15 years SA experience and DoD 8570 IAT II certification, plus ITIL 4 and an active polygraph-enabled security clearance.