Sr. Network Engineer III

Sr. Network Engineer III

Washington dc, DC

Type: Permanent

Category: Engineer

Industry: Government

Reference ID: JN -032026-105873

Date Posted: 05/08/2026

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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 in a fast-paced, mission-critical environment. The role will design, implement, and troubleshoot enterprise UC solutions, including SBCs, gateways, and QoS for real-time traffic. The position will engage with stakeholders to communicate risks and solutions and will contribute immediately to operational support for a security-sensitive customer. The organization values proactive problem solving, teamwork, and continuous improvement.

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 - $280,000/ yr. w2

Responsibilities:

• Work as part of a collaborative team delivering technical solutions supporting senior federal stakeholders.

• Design, implement, and troubleshoot enterprise voice, video, and collaboration platforms.

• Configure and support SBCs, voice gateways, dial plans, and QoS for high-quality real-time communications.

• Serve as a technical SME and resolve operational issues with minimal ramp-up.

• Participate in Agile execution and collaborative problem-solving.

• Communicate technical issues, risks, and solutions to technical and non-technical stakeholders.

• Recommend technical improvements and architectural enhancements.

• Contribute to team discussions, planning, and continuous improvement initiatives.

• Support mission operations with urgency, accountability, and ownership.

• Demonstrate immediate contribution in a fast-paced, mission-critical environment.

• Establish and maintain customer trust through expertise and professionalism.

• Apply creativity and innovation to deliver solutions aligned to mission objectives.

Experience Requirements:

• 12+ years leading or assisting in review, design, and implementation of network engineering solutions with deep hands-on experience in enterprise Unified Communications.

• Demonstrated expertise with Cisco Unified Communications Manager, Webex, and Microsoft Teams.

• Hands-on experience with session border controllers, voice gateways, call routing, and QoS for real-time traffic.

• 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.

• Essential personnel availability for continuity of operations during shutdowns, emergencies, or other critical situations.

Education Requirements:

• Bachelor’s degree in a technical field preferred.

• DoD 8140-aligned certification for the 441 Network Operations Specialist work role, such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.

• Active Top Secret with SCI eligibility security clearance.

Recruitment Transparency Notice

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( View email address on click.appcast.io , View phone number on click.appcast.io) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

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.

If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.

If you have any indication of fraudulent activity, please contact View email address on click.appcast.io .

About Eliassen Group:

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

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