**MANTECH** seeks a motivated, career and customer-oriented **Senior Unified Communications Engineer** to join our team in **Camp Springs, MD** . This is a hybrid position. **Key Responsibilities:** + Provide expertise in Unified Communications (IM, Teaming/Webinars, Video Teleconferencing, Video Streaming, Video Portals, Video on Demand, Digital Signage) over large geographically dispersed networks. + Act as the WAN/Cloud subject matter expert, interfacing with other engineering teams to facilitate implementation, operations, maintenance, and enhancement of UC services. + Serve as the principal interface with security, database, and application operations, engineering, and implementation services, ensuring compliance with policies, processes, and security protections. + Possess expert knowledge of modern Cloud service implementations, including the setup and deployment of VM-based UC systems. + Work on issues related to performance management, implementation engineering, fault isolation, and troubleshooting UC systems that traverse WAN/Cloud/Managed Services. + Travel to field sites as necessary for surveys and UC installations not supported by other teams. + Create firewall/ACL rule requests for system changes, implementations, and deployments. **Required Qualifications:** + 8+ years of relevant UC experience and CTS Certification + Expertise in Avaya Aura and One-X platforms, Polycom VTC systems Teams services, Cisco Routing and Switching, Firewalls, Cisco UC systems (Call Manager, Meeting Server, TMS and Expressways). + Expert level skills in implementing Quality of Service (QoS) in large enterprise networks. **Preferred Qualifications:** + Cisco CCNP Collaboration + CTS-D Certification + CTS-I Certification **Clearance Requirement:** + Must be able to pass USCIS background investigation (public trust) **Physical Requirements:** + Must be able to remain in a stationary position 50% + Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer + The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc. ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.