Land Mobile Radio Systems Admin - Secure, Critical Ops

AT&T; Columbia (MD); On-site; USD 72,000 - 129,000; Full time

Benefits offered by this job

Medical/Dental/Vision coverage

401(k) plan

Tuition reimbursement program

Paid Time Off and Holidays

Paid Parental Leave

Paid Caregiver Leave

Disability Benefits

Life and AD&D Insurance

Employee Discounts

Job summary

AT&T Global Public Sector is seeking a detail-oriented LMR System Administrator to support Land Mobile Radio environment, focusing on logging, security posture, and incident response. You will monitor, analyze, and improve system health and compliance, collaborating with security, tools, engineering, and customer teams.

Role requires in-office presence in Columbia, MD, 5 days a week, TS/SCI with polygraph clearance, and a strong emphasis on accuracy, documentation, and service availability.

Qualifications

• Highschool Diploma or GED with 5+ years of relevant experience.
• Experience administering, monitoring, or supporting mission-critical communications, infrastructure, network, or security systems.
• Working knowledge of system logging, log review, vulnerability scanning, and security monitoring concepts.
• Ability to analyze scan results and recommend remediation steps.
• Strong troubleshooting skills across systems, tools, and processes.
• Ability to document technical findings clearly and communicate risks to stakeholders.
• Strong attention to detail and commitment to availability, compliance, and security posture.
• Ability to collaborate with operations, tools, security, engineering, and customer-facing teams.
• Experience coordinating with vendors, service providers, or third-party support teams to manage 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, monitoring outputs, and system reports to identify remediation needs.
• Search for anomalies, unusual activity, configuration drift, and indicators of security concern.
• Perform deep-dive analysis into LMR system health, configuration, availability, and security posture.
• Partner with the tools team to identify process efficiencies, reporting improvements, and opportunities for automation.
• Work closely with the security team to review scan results, prioritize findings, and implement adjustments or remediation actions.
• Interface with LMR vendors and service providers to coordinate updates, patching, maintenance windows, and regular technical syncs.
• Document findings, actions taken, risks, and recommended improvements for ongoing compliance and reporting.
• Assist with maintaining secure configurations, monitoring practices, and system administration procedures aligned with customer requirements.
• Support incident response, troubleshooting, and root-cause analysis for LMR issues as needed.

Skills

Troubleshooting

Security monitoring

Collaboration

Log review

Vulnerability scanning

Documentation

Vendor coordination

Communication

Education

Highschool Diploma/GED

Tools

Logging tools

Vulnerability scanners

Job description

AT&T Global Public Sector is seeking a detail-oriented LMR System Administrator to support Land Mobile Radio environment, focusing on logging, security posture, and incident response. You will monitor, analyze, and improve system health and compliance, collaborating with security, tools, engineering, and customer teams.

Role requires in-office presence in Columbia, MD, 5 days a week, TS/SCI with polygraph clearance, and a strong emphasis on accuracy, documentation, and service availability.