Senior Voice Systems Administrator – Cisco UC, SIP, TS/SCI

T-Rex Solutions; Columbia (MD); On-site; USD 80,000 - 100,000; Full time

Benefits offered by this job

PTO

Parental leave

Health, Vision, and Dental

Tuition reimbursement

401(k) with company match

Job summary

T-Rex Solutions in Columbia, MD is seeking a fully cleared Voice System Administrator to support critical national security communications and operations. You will manage Cisco Unified Communications Manager, plan maintenance, document configurations, and ensure secure, compliant voice infrastructure for customer operations.

The role requires seven years of SA experience, a related Bachelor’s degree (or five additional years substitute), DoD 8570 IAM Level 2, and an active TS/SCI w/ FSP.

Qualifications

• Seven years of SA experience in similar scope and complexity
• Bachelor’s degree required; five years additional SA experience may substitute for degree
• Experience with TDM/VOIP call managers and multi-cluster Cisco Voice deployments
• DoD 8570 IAM Level 2 required

Responsibilities

• Provide system administration for Cisco Unified Communications Manager and related systems.
• Plan regular maintenance tasks including updates and upgrades.
• Maintain current documentation of system configurations.
• Design and analyze dial plans and voice routes for the network.
• Administer and monitor voice systems for performance and SLA attainment.
• Support break/fix, moves/adds/changes for telecommunications systems.

Skills

Voice system administration

Cisco Unified Communications Manager

Telephony troubleshooting

Security monitoring

Documentation

H.323/SIP

Cisco UCS / ESXi

DoD 8570 IAM Level 2

Education

Bachelor’s degree in Math, Science, Engineering, Statistics, Engineering Management or related discipline

Tools

Nortel Meridian PBX

Cisco Voice gateways

VMware ESXi

Job description

T-Rex Solutions in Columbia, MD is seeking a fully cleared Voice System Administrator to support critical national security communications and operations. You will manage Cisco Unified Communications Manager, plan maintenance, document configurations, and ensure secure, compliant voice infrastructure for customer operations.

The role requires seven years of SA experience, a related Bachelor’s degree (or five additional years substitute), DoD 8570 IAM Level 2, and an active TS/SCI w/ FSP.