Sr. VoIP Communications Engineer

Overview

SR. VoIP COMMUNICATIONS ENGINEER (PACMED):

Bowhead seeks a Sr. VoIP Communications Engineer to assist in designing, deploying, and securing advanced unified communications solutions built on a Zulu Call/Comms platform for military medical treatment facilities in the pacific Region. This role will support DHA and federal health‑care environments operating modern SIP-based voice, messaging, and video communications. The ideal candidate has deep SIP/VoIP experience across multi‑vendor platforms, strong signaling and troubleshooting expertise, and the ability to support secure deployments in DoD and health‑care networks.

• Design and deploy Zulu Call/Comms UCaaS environments across cloud, IL5‑ready datacenters, and on‑premises microservice clusters.
• Configure SIP trunks, SBCs, dial plans, IVRs, queues, call recording, voicemail services, and conferencing features.
• Provision and manage SIP endpoints, including Cisco SIP phones, Poly/Polycom, and Yealink.
• Implement call flows, auto‑attendants, queueing, callback, and ACD routing logic.

• Configure Red Sky/Intrado E911, PIDF‑LO, LLDP‑MED, and nomadic user location services.
• Validate routing paths and ensure compliance with RAY BAUM'S Act and Kari's Law.

• Implement secure signaling/media (TLS/SRTP), SIP authentication, and secure provisioning.
• Support SCAP/DISA STIG checks for VoIP‑related workloads and UC infrastructure.
• Coordinate with cybersecurity teams on RMF and ATO technical requirements for voice systems.

• Work with site network teams to establish VLANs, DHCP, DNS, QoS, PoE, and firewall rules.
• Assist with WAN redundancy, LTE/Starlink failover, and SD‑WAN integrations.
• Diagnose SIP/RTP quality issues: jitter, latency, MOS, packet loss, codec negotiation.

• Lead advanced troubleshooting of SIP signaling, RTP media path, SBC policies, and endpoint registration.
• Provide Tier III support for VoIP, analog gateways, ATAs, SBCs, and softphone applications.
• Collaborate with government technical teams during pilots, testing cycles, and operational validation.

• 7+ years designing, deploying, and supporting VoIP/SIP systems.
• Strong command of SIP, RTP, SDP, TLS/SRTP and debugging tools (sngrep, Homer, Wireshark).
• Deep hands‑on experience with Free SWITCH, Kamailio, or OpenSIPS.
• Experience with UCaaS or carrier‑grade SIP platforms (Net Sapiens preferred).
• Experience with SBCs such as Ribbon, Audio Codes, Telco Bridges, Oracle, or Sangoma.
• Strong understanding of E911, ELIN/ERL, Red Sky/Intrado, and location services.
• Proficiency designing dial plans, IVR flows, queue logic, and call routing policies.
• Strong documentation and customer‑facing communication skills.

• Experience working with Shore Tel, Cisco CUCM, or similar enterprise telephony platforms.
• Experience in DoD/DHA environments.
• Understanding of DISA STIGs, SCAP, RMF, or FedRAMP.
• Linux experience (Ubuntu, Debian, RHEL).
• Familiarity with microservice deployments (Docker/Podman/Kubernetes).

• Strong analytical and problem‑solving skills.
• Ability to lead technical discussions with customers and partners.
• Comfortable working independently in high‑responsibility environments.
• Excellent verbal and written communication.

Physical Demands:

• Must be able to lift up to 20 pounds.
• Must be able to stand and walk for prolonged amounts of time.
• Must be able to twist, bend and squat periodically.

SECURITY CLEARANCE REQUIREMENTS:
Must be able to obtain a security clearance at the Public Trust level. US Citizenship is a requirement.