Cisco Voice Engineers (Senior)

BAE Systems, a top‑ten prime contractor to the U.S. Department of Defense, enables the U.S. government to transform data into intelligence and provides engineering, integration, and sustainment support for critical military platforms and systems. Our Intelligence & Security sector delivers advanced services and products to the Department of Defense, federal agencies, law enforcement, and deployed forces around the world.

At BAE Systems, we foster a strong, collaborative culture and equip our employees with the tools, training, and support they need to excel. Trust, camaraderie, and a shared ambition to lead in defense technologies define who we are. We offer a flexible work environment that helps you balance life and perform at your best. Join a company deeply connected to its community—driven to improve our future and protect our freedom. We are seeking an experienced Cisco Voice Engineer to support a mission‑critical, technology‑driven program for a key Government customer. This role focuses on designing, deploying, securing, and sustaining enterprise‑level Cisco Unified Communications solutions across a complex, highly secure environment. Key responsibilities:

Design, test, and deploy new Cisco Voice infrastructure (CUCM, Unity Connection, IM&P, UCCX).

Implement next‑generation voice system technologies and support first‑article engineering.

Participate in security accreditation activities for all voice systems.

Manage PKI/certificate requirements across Cisco UC components.

Perform system upgrades, patching, and lifecycle maintenance for hardware and software.

Provide engineering support for new site standups, including dial plan design and endpoint provisioning.

Design, test, and deploy call center technologies (UCCX/UCCE), including user training and transition planning.

Execute tasks related to call routing, SIP trunking, SRST, CUBE, and gateway configuration.

Collaborate with customers and internal teams to gather and refine system requirements.

Ensure compliance with enterprise standards, policies, and security procedures.

Work within a large‑scale enterprise IT environment with responsibilities specific to Cisco Voice and Unified Communications.

Partner with network engineering and telecom teams on integration activities involving telephony, call center systems, and network infrastructure.

Support secure communications devices and infrastructure, including VoIP phones, STEs, Viper phones, encryption devices, POTs/ISDN/leased lines, conference bridges, and call management servers.

Bachelor’s or Master’s degree in Computer Science, IT, Engineering, or related field

Minimum of six (6) years of relevant Voice/UC engineering experience

Strong technical expertise in: SIP signaling and call flows Secure Real‑Time Transport Protocol (SRTP) SIP, MGCP, H.323 TCP/IP networking MPLS transport environments DNS and DHCP RTP media handling

SIP signaling and call flows

Secure Real‑Time Transport Protocol (SRTP)

SIP, MGCP, H.323

TCP/IP networking

MPLS transport environments

DNS and DHCP

RTP media handling

Experience supporting secure, enterprise‑scale voice environments

Ability to troubleshoot complex call routing, signaling, and interoperability issues

Strong communication skills for documentation, requirements analysis, and customer interaction