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Senior Unified Communications Administrator Security Clearance

Job in San Antonio, Bexar County, Texas, 78201, USA
Listing for: Amentum
Full Time position
Listed on 2026-06-03
Job specializations:
  • IT/Tech
    Cybersecurity, IT Specialist, Systems Administrator, IT Support
Job Description & How to Apply Below
Position: Senior Unified Communications Administrator with Security Clearance
Purpose and Impact:
In support of a challenging, critical, and rewarding program that provides integrated voice, video, and data services throughout the Information Technology lifecycle, Amentum is seeking a Senior Unified Communications Administrator to join our dynamic team of IT professionals dedicated to fostering a positive and collaborative work environment. You must be a critical thinker, have a strong work ethic, and be able to work independently or as a member of a team in a dynamic environment.

We value candidates who are detail-oriented while also being able to think and react quickly to emerging and unique problem sets. To be successful, you must be able to rapidly adapt and learn how to operate the front and back end of new products and processes.

Work Schedule:

• 40-hours of shift work; shifts vary from Days (0630 – 1500), Swings (1430 – 2300), & Mids (2230 – 0700);
Sunday through Saturday

Essential Responsibilities:

The duties and responsibilities of the Senior Unified Communications Administrator include, but are not limited to the following:

• Develop and implement comprehensive unified communications solutions tailored to the specific needs of the organization, focusing on scalability, security, and optimal performance to ensure long-term effectiveness and adaptability to evolving business requirements
• Install and set up unified communications systems, encompassing VoIP, video conferencing, instant messaging, and collaborative platforms, to ensure seamless integration and efficient functionality across the organization
• Monitor and manage the performance and stability of unified communications infrastructure, proactively identifying and resolving issues, while conducting routine maintenance, updates, and security patches to maintain continuous, optimal operation
• Integrate unified communications systems with other IT components, including network infrastructure, Active Directory, and cloud services, to create a cohesive and efficient technological environment that supports seamless communication and collaboration
• Implement security protocols to safeguard communication channels, data, and endpoints, while adhering to security standards and regulations to maintain a secure and compliant environment
• Offer technical support to end-users, troubleshoot and resolve communication-related issues, and provide training as needed to enhance user proficiency and system effectiveness
• Develop and update comprehensive documentation for unified communications systems, covering configurations, procedures, and best practices to ensure clear guidance and consistency in system management and troubleshooting
• Work closely with vendors and suppliers to acquire hardware, software, and services, while managing vendor relationships to maintain timely delivery, quality, and alignment with organizational needs
• Create and uphold disaster recovery plans and procedures to maintain business continuity in the event of system failures Work Environment, Physical Demands, and Mental Demands:

Minimum Requirements (Knowledge, Skills, and Abilities):

• Must have active Top-Secret clearance with SCI or the ability to acquire Top Secret/SCI   
• At least 4 years of telecommunications technical experience installing, administering, and upgrading Cisco Unified Collaboration appliances and troubleshooting converged networks that leverage Cisco UC capabilities to interconnect Cisco, Tandberg, and Polycom endpoints, gateways, and teleconference bridge products

• Must be able to work a 40-hours of shift work; shifts vary from Days (0630 – 1500), Swings (1430 – 2300), & Mids (2230 – 0700);
Sunday through Saturday
• Must have the ability to independently deploy and maintain server-based dial plans, router-based dial plans, and the deployment and management of Cisco UC appliances
• Experience configuring Cisco routers to act as VoIP gateways and demonstrate a strong understanding of Cisco IOS 12.X/15.X command syntax
• Must be able to troubleshoot end-to-end performance issues associated with voice and video conferences involving IP and ISDN networks.
• Must be able to work a 40-hour work week, normally Monday…
Position Requirements
10+ Years work experience
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