> Markdown version of [/jobs/ext/3865059-system-administrator-oconus](https://www.wearedevelopers.com/jobs/ext/3865059-system-administrator-oconus). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # System Administrator - OCONUS - **Company:** Bristol Alliance of Companies - **Location:** San Antonio, TX, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** VoIP, Cisco Unified Communications Manager, CompTIA Security+, Computer Terminals, Deep Packet Inspection, Linux, Session Initiation Protocols, Windows Servers, Virtual Local Area Networks, EndPointSecurity, Network Routers, NetScout, Performance Monitor, Network Server, Wsus, Cisco, Network Optimization - **Published:** October 22, 2026 - **Apply:** https://recruiting2.ultipro.com/BRI1029BRIS/JobBoard/580b749b-b927-4a27-aef4-100e8eccc31d/OpportunityDetail?opportunityId=e463431f-09a5-456f-acba-04434741be49 ## About the Role * Operational experience with Cisco Unified Communications Manager (CUCM), Call Manager clusters (publisher & subscribers), Cisco Unified Border Element (CUBE), Session Initiation Protocol (SIP) trunking, dial-plan design, and high-availability voice infrastructure. * End-to-end responsibility for phone directories, Call Data Records/Call Management Records (CDR/CMR) analysis, server log management, capacity planning, and performance monitoring across multiple geographically separated sites. * Proficient administration of both Linux and Windows server environments that host VoIP applications, directory services, and related management tools. * Hands-on experience with endpoint detection & response suites. * Proven ability to plan and execute both automated and manual Windows Server Updates Services (WSUS) and equivalent patching cycles for routers, switches, servers, and workstations while maintaining strict change-control and mission-availability requirements. * Solid working knowledge of enterprise routing, VLAN design, ACL management, and the integration of VoIP traffic into the broader ONE-Net architecture. * Hands-on experience with NetScout nGeniusPulse (or equivalent) for deep packet inspection, VoIP/QoS monitoring, call-quality troubleshooting, and real-time network performance analysis across the enterprise voice infrastructure. Required Education and Experience * High school diploma or equivalent. * Five years of experience in the field or related area. * Valid driver's license. Preferred Education and Experience * Active DoD Secret clearance * Cisco CCNA (or higher) * CompTIA Security+/Network+, and demonstrated experience supporting OCONUS Navy / DoD environments, * Mobility: must be able to stoop, kneel, reach, walk, lift, grasp, feel, talk, hear, and perform repetitive motions. * Hearing: must be able to hear audible safety alarms. * Visual Acuity: must be adequate to perform the above listed tasks in a safe manner and perform activities such as viewing a computer terminal and extensive reading. * Lifting: must be able to exert up to 50 pounds of force occasionally and up to 20 pounds of force frequently, and/or a negligible amount of force constantly to lift, carry, push, pull or otherwise move objects, including the human body. ## Description Telecommunications VoIP System Administrator supports Voice over Internet Protocol (VoIP) to support the Department of Navy. This position will be located in Naples, Italy., Bristol companies are equal opportunity employers and offer any available positions to all, without regard to race, color, religion, sex, national origin, age, disability, veteran status, parenthood, pregnancy, marital status, or changes in marital status, in accordance with applicable state and federal laws. This applies to recruitment, placement, pay, benefits, training, employment status changes, social and recreational programs, and other conditions and benefits of employment. Bristol grants employment preference first to BBNC and Choggiung shareholders, their spouses, or descendants, and second to Alaska Native Corporation shareholders in accordance with P.L. 93-638. Disclaimer This job description is not intended to cover or contain a comprehensive list of activities, duties, or responsibilities that are required of the employee. Other duties, responsibilities, and activities may change or be assigned at any time with or without notice.