VOIP Engineer

TEKsystems; Stafford (VA); On-site; USD 9,271,000 - 11,259,000; Full time

Job summary

TEKsystems in Stafford, VA is seeking a Lead VoIP Engineer to oversee CUCM and related voice/video resources across enclaves. The role requires maintaining security posture and ensuring STIG compliance.

The candidate should have TOP SECRET clearance with TS/SCI eligibility, 5+ years in communications systems design/maintenance, strong CUCM experience (12+), CCNP and DoD 8570 IAM-II certifications. This is a contract-to-hire onsite position with competitive pay.

Qualifications

• Top Secret clearance required with TS/SCI eligibility.
• 5+ years in designing/building/maintaining communications systems.
• 3+ years with CUCM Version 12+.
• CCNP Certification or CCNP Collaboration/CUCOR exam completion.
• Experience with Cisco Unity, Presence, Emergency Responder, UCCX.
• DoD 8570 baseline IAM-II/IAT-II certification.
• Strong knowledge of SIP, SCCP, MGCP, DSN, PSTN, H.323.

Responsibilities

• Performs testing, provisioning, operations and emergency responses for voice network operations.
• Designs, configures, installs VoIP hardware/software replacements and upgrades.
• Develops and maintains all VoIP documentation (drawings, cut sheets, configurations, deployment plans).
• Identifies and diagnoses problems affecting voice services.
• Provides day-to-day SME support for RKB tenant agencies.
• Troubleshoots voice issues/outages, including non-core hours.
• Works with vendors in support of the ITCSU.
• Performs preventative maintenance on VoIP devices.
• Maintains understanding of emerging voice/video technologies.
• Performs other tasks as required by OSC and contracting office.

Skills

VoIP

CUCM

SIP

H.323

CCNP

DoD 8570

Security clearance

CIC/VoIP security

Education

High School diploma

CCNP Certification

TS/SCI eligibility

Tools

Cisco Unity

Cisco UCCX

Cisco Priority tools

Job description

Description

As a Lead VoIP Engineer, the individual will oversee and manage all components of the Cisco Unified Communication Manager cluster. In this role, the Engineer will monitor and control the performance and status of voice and video resources across multiple enclaves and locations utilizing software and hardware tools. In addition, the individual will work to ensure all voice applicable STIGs and vulnerabilities are resolved or mitigated in a timely manner.

Major Activities (Typical Duties/Responsibilities)

-Performs testing, provision, 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

Minimum 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) and 60 days to get the 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, MGCP, 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: https://public.cyber.mil/cw/cwmp/dod-approved-8570-baseline-certifications

Skills

Voip, Cisco voip, Cisco voice, Cisco call manager, Uccx, Unity, Troubleshooting, Unified communications, cucm, Phone system, Sip, Telephony, ccnp, CLCOR

Experience Level

Intermediate Level

Job Type & Location

This is a Contract to Hire position based out of Stafford, VA.

Pay and Benefits

The pay range for this position is $67.30 - $81.73/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a fully onsite position in Stafford,VA.

Application Deadline

This position is anticipated to close on Oct 12, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

Were a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. Were a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. Were strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. Were building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance

Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI)

We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.