**Description**

Leidos is seeking an experienced Voice / VoIP Architect to provide senior-level technical leadership, architectural oversight, and strategic direction for enterprise voice and unified communications services supporting NASA’s mission and corporate environments. This role is central to designing, evolving, and modernizing large-scale telephony platforms, including hybrid and cloud-based voice architectures and the transition from legacy Cisco environments to Microsoft Teams Telephony.

The selected candidate will serve as the lead architect for enterprise voice services, responsible for end-to-end design, integration, migration, and optimization of VoIP and unified communications platforms. This includes deep expertise in SIP-based communications, secure voice architectures, and large-scale, mission-critical deployments.

**Key Responsibilities**

+ Lead architecture and design of enterprise voice and VoIP solutions across on-premise, hyb...