Sr. Network Engineer III
Washington dc, DC
Category: Engineer
Industry: Government
Reference ID: JN -032026-105836
Date Posted: 03/08/2026
Shortcut: http://careers.eliassen.com/VWIYKm
Description:
Onsite in Washington, DC
The Sr. Network Engineer III will serve as a subject matter expert for unified communications across voice, video, and collaboration platforms. The role demands deep technical proficiency with enterprise UC, proactive problem solving, and effective teamwork in a mission-critical environment. The organization supports a highly visible, security-sensitive customer and expects immediate operational contribution and clear stakeholder communication.
This is a full-time, permanent opportunity, offering a competitive salary and comprehensive benefits package. Qualified applicants must be willing and able to work on a w2 basis.
Salary: $230,000 - $290,000/ yr. w2
Responsibilities:
- Work as part of a collaborative, high-performing team delivering technical solutions supporting the highest levels of the federal government.
- Design, implement, and troubleshoot enterprise voice, video, and collaboration platforms.
- Configure and support SBCs, voice gateways, dial plans, and QoS to ensure high-quality real-time voice and video traffic.
- Serve as a technical subject matter expert able to support operational issues with minimal ramp-up time.
- Participate in Agile execution and contribute to collaborative problem-solving efforts.
- Communicate technical issues, risks, and solutions clearly to both technical and non-technical stakeholders.
- Proactively recommend technical improvements and architectural enhancements.
- Contribute to team discussions, planning, and continuous improvement initiatives.
- Support mission operations with urgency, accountability, and a strong sense of ownership.
- Demonstrate the ability to contribute immediately in a fast-paced, mission-critical environment.
- Establish and maintain a high level of customer trust and confidence through technical expertise and professionalism.
Experience Requirements:
- Active Top Secret with SCI eligibility security clearance.
- Possess DoD 8140 certification aligned to the 441 Network Operations Specialist work role, such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.
- 10+ years of experience leading or assisting in review, design, and implementation of network engineering solutions, with hands-on expertise supporting enterprise unified communications environments.
- Expertise designing, implementing, and troubleshooting complex voice, video, and collaboration platforms, including Cisco Unified Communications Manager, Webex, and Microsoft Teams.
- Hands-on experience supporting session border controllers, voice gateways, call routing, and ensuring QoS for real-time traffic.
- Hands-on experience with VQ Conference Manager, Jabber, Cisco telephony endpoints, and Cisco Expressway.
- Proven ability to troubleshoot and resolve operational voice and video issues in mission-critical environments with minimal ramp-up.
- Ability to contribute immediately in a mission-critical operational environment.
Education Requirements:
- Bachelor’s degree in a technical field is preferred.
- DoD 8140-aligned certifications such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.
- Active Top Secret with SCI eligibility security clearance.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
Please be advised- If anyone reaches out to you about an open position connected with Eliassen Group, please confirm that they have an Eliassen.com email address and never provide personal or financial information to anyone who is not clearly associated with Eliassen Group. If you have any indication of fraudulent activity, please contact InfoSec@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland 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.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contactInfoSec@eliassen.com.
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