LMR Systems Administrator – Security‑Focused, On‑Site MD

AT&T; Columbia (MD); On-site; USD 72,000 - 124,400; Full time

Benefits offered by this job

Medical/Dental/Vision

401(k) plan

Tuition reimbursement

Paid Time Off and Holidays

Parental Leave

Caregiver Leave

Disability Benefits

Life Insurance

Employee discounts

Wellness programs

Job summary

AT&T Global Public Sector is seeking an LMR System Administrator to support secure Land Mobile Radio systems at a government site in Columbia, MD. You will monitor logs, review vulnerability scans, and help maintain security posture while coordinating with internal teams and vendors.

The role requires TS/SCI with polygraph clearance, strong troubleshooting skills, and ability to work in a mission-critical IT environment. Expect 40-hour weeks and comprehensive benefits.

Qualifications

• Highschool Diploma or GED required.
• Experience administering, monitoring, or supporting mission-critical comms, infrastructure, network, or security systems.
• Knowledge of system logging, log review, vulnerability scanning, and security monitoring concepts.
• Ability to analyze scan results, identify trends, and propose remediation steps.
• Strong troubleshooting skills across systems, tools, and processes.
• Ability to document findings clearly and communicate risks to technical and non-technical stakeholders.
• Deep attention to detail to maintain availability, compliance, and security posture.
• Ability to collaborate with operations, tools, security, engineering and customers.
• Experience coordinating with vendors or third-party support for updates and compliance.

Responsibilities

• Collect, review, and maintain system logging data for monitoring, audit readiness, and security compliance.
• Support transfer, retention, and analysis of logs across approved tools and repositories.
• Review vulnerability scans and system reports to identify issues needing remediation.
• Search for anomalies, unusual activity, and configuration drift.
• Perform deep-dive analysis into LMR system health, configuration, and security posture.
• Collaborate with tools team to improve processes, reporting, and automation.
• Work with security team to review scan results and implement approved actions.
• Coordinate with LMR vendors and service providers on updates, patches, and maintenance windows.
• Document findings, actions taken, risks, and improvements for compliance and reporting.
• Assist with secure configurations, monitoring practices, and admin procedures.

Skills

Mission-critical systems experience

System logging & vulnerability scans

Troubleshooting & problem solving

Documentation & communication

Attention to detail & security posture

Cross-functional collaboration

Vendor coordination

Education

Highschool Diploma/GED

Job description

AT&T Global Public Sector is seeking an LMR System Administrator to support secure Land Mobile Radio systems at a government site in Columbia, MD. You will monitor logs, review vulnerability scans, and help maintain security posture while coordinating with internal teams and vendors.

The role requires TS/SCI with polygraph clearance, strong troubleshooting skills, and ability to work in a mission-critical IT environment. Expect 40-hour weeks and comprehensive benefits.