Senior Network Engineer with Security Clearance

apartmentEliassen Group placeWashington calendar_month 
As a Sr. Network Engineer III, you'll serve as a technical authority for voice, video, and collaboration platforms, contributing immediately as a subject matter expert within a fast-paced operational environment. Success requires deep technical expertise, proactive problem solving, and strong team collaboration.
This role provides senior unified communications engineering support for a highly visible, security-sensitive customer. If you think you can see yourself delivering our mission and pursuing our goals with us, then check out the job description below!

What you’ll do: 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 (Unified Communications) 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 (SME), 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.
Actively 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.

What you’ll need to succeed: Active Top Secret with SCI eligibility security clearance.

Bachelor’s degree in a technical field is preferred. Relevant experience may substitute for education requirements.
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 deep hands-on expertise supporting enterprise Unified Communications environments.
Demonstrated subject matter 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 Quality of Service 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.

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