Voice System Administrator - Level 1

J&T Business Consulting; New York (NY); On-site; USD 92,000 - 104,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) with company match

PTO & paid holidays

Job summary

J&T Business Consulting is seeking a seasoned systems administrator to manage enterprise Cisco CUCM and related VoIP platforms in a DoD-aligned environment. The role covers maintenance, upgrades, dial plans, traffic routing, and active monitoring to meet strict SLAs.

Applicants should have 7 years of experience in similar environments, a relevant Bachelor's degree (or 12 years substitute) and DoD IAT II/IAM II certifications.

Qualifications

• Experience with DoD 8570 IAT II and IAM II certifications is required.
• Experience administering enterprise voice and telephony systems.
• Solid background in signaling, VoIP, and large-scale Cisco Voice deployments.

Responsibilities

• Provide end-to-end system administration for CUCM and telephony platforms.
• Plan maintenance, updates, and upgrades for voice infrastructure.
• Design dial plans and traffic routing to optimize voice networks.
• Monitor performance, SLAs, and ensure high availability.
• Escalate and resolve MACD requests across telecom systems.
• Maintain detailed documentation of configurations and topologies.

Skills

VoIP protocols (SIP, H.323)

CUCM familiarity

Strong communication

Education

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

12 years total experience in lieu of degree

Tools

CUCM

Nortel Meridian PBX

VMware ESXi

Job description

Columbia, United States | Posted on 11/10/2026

Key Responsibilities

• System Administration: Provide end-to-end system administration for an enterprise-wide Cisco Unified Communications Manager (CUCM) and related telephony platforms.
• Maintenance & Upgrades: Plan, schedule, and execute regular maintenance tasks, software updates, and system upgrades.
• Dial Plans & Traffic Routing: Design, administer, and analyze corporate dial plans and traffic routes to optimize voice network infrastructure.
• Performance & SLA Monitoring: Monitor voice systems proactively to ensure operational health, high availability, and SLA attainment.
• Tiered Support & Service Requests: Provide escalation support for lower-tier break/fix resolution, as well as handling Move/Add/Change/Deactivation (MACD) requests across all telecommunications systems.
• Documentation: Maintain current, detailed, and accurate documentation of all system configurations, topologies, and administrative procedures.

Experience & Education

Experience: 7 years of system administration experience on programs and contracts of similar scope, type, and complexity.

Education: Bachelor’s degree in Mathematics, Science, Engineering, Statistics, Engineering Management, or a related discipline from an accredited college or university.

Substitution: 5 additional years of system administration experience (12 years total) may be substituted for a Bachelor’s degree.

Technical Skills & Domain Expertise

Hands-on experience configuring and administering common TDM and VoIP telephone call manager systems (e. g., Cisco Unified Communications Manager / CUCM, Nortel Meridian PBX lines).

Hands-on experience with large-scale Cisco Voice implementations in multi-cluster environments and data networking infrastructures.

Working knowledge of signaling and VoIP protocols, including H. 323 and SIP.

Familiarity with Cisco Unified Communications platforms, voice gateways, hardware virtualization, and VMware ESXi environments.

Strong written, verbal, and interpersonal skills.

Certifications

DoD Compliance: DoD 8570 IAT Level II and IAM Level II certifications required.

Estimated Compensation & Benefits Overview

Target Salary Range: $92, 000 – $104, 000 (Base compensation depends on experience level, technical skills, education, and specific contractual requirements).

Benefits Package: Comprehensive medical, dental, and vision coverage; basic life & disability insurance; paid time off (PTO) & paid holidays; paid parental leave; tuition reimbursement; and a 401(k) plan with company match.