Senior VOIP Engineer

Unified Communications Engineer Company Overview: At ValidaTek, we modernize and optimize IT services to solve some of the most critical challenges facing federal civilian and defense agencies. From customers to partners to top-talent employees, ValidaTek puts people first, empowering them to exceed expectations and transform government organizations. Our employees are building purpose-driven careers, not just filling jobs. We bring together people with many different perspectives, experiences, and talents to drive innovation and achieve more together than we can individually. Our commitment to quality and performance optimization is the reason why our IT Service Projects and New Development Projects have been appraised at CMMI Maturity Level 5, positioning us as one of a handful of elite companies to receive the highest form of third-party validation. Summary: The Unified Communications Engineer is responsible for the administration, operation, maintenance, and optimization of enterprise voice and video communications systems. This role serves as the technical lead for Cisco Unified Communications Manager (CUCM) environments, supporting VoIP infrastructure, collaboration platforms, and voice services across multiple enclaves and locations while ensuring availability, security, and performance. Responsibilities: Administer and manage all components of the Cisco Unified Communications Manager (CUCM) environment. Monitor and maintain enterprise voice and video services across multiple locations and network enclaves. Design, configure, install, and upgrade VoIP hardware, software, and collaboration solutions. Perform provisioning, testing, operations, and emergency response activities for voice network services. Troubleshoot and resolve voice, video, and unified communications issues, including support during non-core business hours as required. Configure and support SIP trunks, Session Border Controllers (SBCs), SCCP, MGCP, and H.323 technologies. Integrate voice services with external SIP providers and enterprise network infrastructure. Maintain voice and video architecture documentation, network diagrams, configurations, deployment plans, and operational procedures. Provide subject matter expertise and technical support to stakeholders and tenant organizations. Coordinate with vendors and service providers to support operational requirements and resolve technical issues. Ensure voice systems comply with applicable cybersecurity requirements, STIGs, and vulnerability management policies. Perform preventative maintenance and lifecycle management of VoIP and collaboration infrastructure. Evaluate emerging voice, video, and collaboration technologies and recommend improvements to existing services. Qualifications: Minimum of five (5) years of experience designing, implementing, supporting, or maintaining enterprise communications systems. Minimum of three (3) years of experience administering Cisco Unified Communications Manager (CUCM) Version 14.1 or newer. Active Top Secret clearance with TS/SCI eligibility. Experience with Cisco Unity Connection, Cisco Finesse, Cisco IM&P, Unified Contact Center Express (UCCX), and Cisco Emergency Responder. Experience with dynamic and static IPv4 routing and integration with external SIP service providers. Proficiency supporting SBC, SIP, SCCP, MGCP, and H.323 protocols and technologies. Strong troubleshooting and operational support experience in enterprise VoIP environments. Current Cisco Certified Network Professional (CCNP) Collaboration certification or successful completion of the Cisco Collaboration Core (CLCOR) examination. Ability to meet DoD 8140 Cybersecurity Workforce requirements. Strong analytical, troubleshooting, documentation, and communication skills. Preferred Qualifications: Experience supporting Department of Defense (DoD), Department of Navy (DoN), or other Federal Government environments. Experience with enterprise video conferencing and collaboration platforms. Familiarity with network security principles, STIG compliance, and vulnerability remediation processes. Experience supporting large-scale, geographically dispersed communications environments. Additional Cisco Collaboration or networking certifications. Salary Disclosure: Actual salary will be based on a variety of factors including but not limited to experience, geographic location, contract affordability, internal equity, education, and certifications. The upper end of the salary range may be reserved for individuals who have demonstrated tenure with the company, seniority, and proven excellent performance. This includes factors such as education, certifications, and extensive/unique experience beyond what is required. EEO Statement: ValidaTek is an Equal Opportunity Employer. All qualified applicants will be considered without regard to disability, protected veteran status, or any other status protected by federal, state, or local laws. Applicants who are selected for employment will be required to verify authorization to work in the United States. Offers of employment will be contingent upon passing a post-offer background check. ValidaTek