Sr. Network Engineer III

Description:
Onsite in Washington, DC

Our client seeks a Sr. Network Engineer III to serve as a subject matter expert for unified communications across voice, video, and collaboration platforms in a mission-critical environment. The role requires deep hands-on expertise with enterprise UC, proactive problem solving, and clear communication with technical and non-technical stakeholders. You will design, implement, and troubleshoot complex UC solutions while supporting high-visibility, security-sensitive operations. You will contribute immediately within a collaborative, high-performing team.

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 reviewing, designing, and implementing network engineering solutions with deep hands-on expertise supporting enterprise unified communications environments.
• Expertise designing, implementing, and troubleshooting 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.
• 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 preferred or equivalent relevant experience.
• DoD 8140-aligned certifications such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.