Enterprise Voice Engineer

Job Description

Requirements
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### Must have:

### - We require an active Secret security clearance. - We require current DoD 8750 certification at IAT Level II, such as Security+ CE or an equivalent credential. - We need experience with one or more voice platforms such as Cisco Unified Communications Manager, Cisco Unity, Cisco Unified Border Element, Oracle Session Border Controller, or Avaya Aura Application Server. - We require strong expertise in SIP signaling and call-flow analysis. - We need proven advanced troubleshooting ability to diagnose routing, switching, security, and large-scale voice network issues. - We require a bachelors degree with 4--8 years of relevant experience, or a masters degree with 2--6 years of relevant experience, or an equivalent mix of education and experience. - We prefer working knowledge of SRTP, including G.711 and G.729 codecs and DTMF. - We prefer experience with Cisco Unified Communications Manager or Avaya Aura soft switches. - We prefer experience with Oracle SBCs and other voice media gateway appliances. - We prefer experience supporting distributed firewall infrastructure. - We prefer experience building and supporting IPSec MPLS VPN environments. - We prefer experience implementing and supporting BGP routing protocols. - We prefer experience designing, configuring, and troubleshooting QoS for voice and other critical traffic. - We prefer familiarity with IPSec implementation and troubleshooting.

Responsibilities:
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- We perform engineering work to sustain a large, highly resilient IP voice and video communications environment. - We manage, configure, and troubleshoot voice, video, and data network services, with strong attention to documentation and diagramming. - We carry out system maintenance, capacity planning support, and configuration change execution and documentation. - We configure calling search spaces, route plans, route partitions, route lists, and device profiles. - We configure Cisco or Juniper routing and switching equipment. - We support distributed firewall infrastructure. - We develop technical policies, work instructions, and reporting for an enterprise IP telephony network. - We analyze and resolve complex technical issues involving SIP signaling and call flows. - We troubleshoot remote site registration, signaling, and media problems. - We validate change requests and confirm accuracy. - We perform fault analysis and configuration of voice subscribers, call handlers, and call routing rules. - We perform fault analysis and configuration of Cisco and/or Juniper routing and switching rules. - We train the team on these duties and support second-shift operations, Monday through Friday from 2:00 p.m. to 10:00 p.m.
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Company:
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We are Leidos, an industry and technology leader delivering digital and mission-focused innovation to government and commercial customers. This role supports DISA and its command-and-control services for the Defense Information System Network, helping maintain secure, reliable, uninterrupted voice services. The position is on second shift, Monday through Friday from 2:00 p.m. to 10:00 p.m., and we offer competitive compensation along with health and wellness programs, income protection, paid leave, and retirement benefits. We are headquartered in Reston, Virginia, with about 47,000 global employees and approximately $16.7 billion in annual revenue for fiscal year ended January 3, 2025.
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