Patriot, LLC seeks a Telecommunications Analyst with an Active Secret clearance to join our team in Annapolis Junction, MD. The selected candidate will Manage and support enterprise VoIP and telephony systems across these programs, including hardware, software, peripherals, and call applications such as WFO/WFM, CMS, and call recording platforms. Operate, monitor, and maintain enterprise infrastructure, including web servers (e.g., IIS, Apache Tomcat), application servers, and telecom hardware (e.g., Dell PowerEdge servers, Avaya J Series phones). Install, configure, troubleshoot, and resolve issues related to VoIP systems, Unix/Linux/Windows servers, network connectivity, and system integrations with Active Directory, DNS, DHCP, and LDAP. Collaborate with cross-functional teams to implement telephony solutions that ensure high availability, call quality, and compliance with security and performance standards. Other tasks as assigned. Active Secret security clearance. U.S. Citizenship (no dual citizenship permitted). Minimum of 7 years of experience supporting VoIP or telephony systems in a systems administrator or engineer role. Experience with VoIP protocols and technologies, including SIP, RTP, SRTP, and Avaya platforms (e.g., Communication Manager, CMS, ACR, WFO, IX Messaging, System Manager). Experience in Unix/Linux environments including patching, volume management, LDAP integration, and log analysis. Experience with Windows Server environments, including Active Directory, Group Policy, DNS, DFS, and DHCP. Networking experience including IPv4, ports/protocols, IP routing fundamentals, and monitoring. Familiarity with remediation and validation of security vulnerabilities. Proficiency with managing and monitoring infrastructure, including telephony peripherals and server systems. Knowledge of client/server certificates and authentication mechanisms. Willingness and ability to work onsite and participate in a rotational on-call schedule to support 24x7x365 operations.