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
Basic Qualifications
Bachelor's degree in Engineering, Computer Science, or related field (Master's preferred).
10-15+ years of experience in enterprise voice/VoIP engineering or architecture.
Proven experience supporting large-scale telephony deployments and migrations, including Cisco to Microsoft Teams Telephony.
VoIP Protocols & Standards: Expert-level understanding of SIP, RTP/RTCP, H.323, and codec technologies (G.711, G.729, Opus).
Networking Fundamentals: Strong knowledge of TCP/IP, VLANs, QoS, MPLS, SD-WAN, and routing protocols (BGP, OSPF) for voice traffic prioritization.
Platforms & Vendors:
Cisco Unified Communications Manager (CUCM)
Cisco Unified Border Element (CUBE) / SBCs
Microsoft Teams Telephony
Experience with Avaya or similar enterprise voice platforms
SIP & Security:
SIP trunk configuration (Cisco & Microsoft environments)
TLS/SRTP implementation
Certificate management and PKI
Firewall traversal and rule implementation
Strong troubleshooting skills using protocol analyzers (SIP traces, packet captures, call flow analysis).
Preferred Qualifications
Experience with
Akkadian Provisioning Manager
Oracle SBC
Microsoft Survivable Branch Appliance (SBA)
Cisco Unified Contact Center (UCCX/UCCE)
Security & Compliance: Familiarity with PCI, HIPAA, and secure voice recording requirements.
Hybrid/Cloud Voice: Experience designing hybrid VoIP architectures integrating on-prem PBX with cloud platforms (Microsoft Teams, Direct Routing).
Experience supporting government or NASA environments.
Active Secret Clearance.
Relevant certifications (e.g., Microsoft Teams Voice Engineer, CCNP Collaboration, etc.).
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.
Original Posting:
April 24, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $92,300.00 - $166,850.00
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.