Demo

Sr. VoIP Engineer

Isys Technologies
Isys Technologies Salary
Littleton, CO Full Time
POSTED ON 10/15/2026
AVAILABLE BEFORE 11/14/2026
Minimum Clearance Required

TS/SCI

Responsibilities

We are seeking a Sr. VoIP Engineer to support ongoing activities for a customer in Quantico, Virginia. This position will be onsite and will require an active *Top Secret Clearance with SCI eligibility.
  • Performs tests, provisions, operations and emergency responses for voice network operations
  • Designs, configures, and installs VoIP hardware/software replacements and upgrades
  • Develops and maintains all VoIP documentation (drawings, cut sheets, configurations, and deployment plans)
  • Identifies and diagnoses problems and factors affecting voice services
  • Provides day-to-day subject matter expert support for RKB tenant agencies
  • Troubleshoots voice related issues and outages, which may occur during non-core hours
  • Works with vendors in support of the ITCSU
  • Performs preventative maintenance services on all devices within the VoIP area of responsibility
  • Maintains a current understanding of emerging technologies and trends in voice and video services
  • Performs other tasks as required by OSC and the Government contracting office

Qualifications

  • Must have and maintain a TOP SECRET clearance and must be eligible for a TS/SCI
  • High School diploma or equivalent
  • Five (5) or more years of experience designing, building, and/or maintaining communications systems with a minimum of three (3) years of experience with CISCO Unified Communications Manager (CUCM) Version 12 or newer
  • Cisco Certified Network Professional (CCNP) Collaboration or successful completion of the CLCOR exam
  • Prior experience with Cisco Unity, Cisco Presences, Cisco Emergency Responder
  • Knowledge of Cisco UCCX
  • Prior experience with dynamic and static IPv4 routing and integrating with an external SIP provider
  • Proficient with SIP, SCCP, MGoogle Cloud Platform, DSN, PSTN, and H.323 systems and devices
  • Must be DoD 8570 certified at the IAT-II / IAM-II level. Please refer to the website: ;/li>

Desired Experience and Skills
  • Bachelor's degree

Essential Requirements:

ship is required.

Please note that this role represents a direct-hire placement for a privately held company within our group of businesses.

Physical Demands:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job with or without reasonable accommodation.

While performing the duties of this job, the employee will regularly sit, walk, stand and climb stairs and steps. May require walking long distance from parking to work station. Occasionally, movement that requires twisting at the neck and/or trunk more than the average person, squatting/ stooping/kneeling, reaching above the head, and forward motion will be required. The employee will continuously be required to repeat the same hand, arm, or finger motion many times. Manual and finger dexterity are essential to this position. Specific vision abilities required by this job include close, distance, depth perception and telling differences among colors. The employee must be able to communicate through speech with clients and public. Hearing requirements include conversation in both quiet and noisy environments. Lifting may require floor to waist, waist to shoulder, or shoulder to overhead movement of up to 20 pounds. This position demands tolerance for various levels of mental stress

Salary : $160,000 - $195,000

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