Sr. VoIP Communications Engineer

UIC Government Services and the Bowhead Family of Companies; San Diego (CA); On-site; USD 120,000 - 150,000; Full time

Job summary

UIC Government Services and the Bowhead Family of Companies seeks a Senior VoIP Communications Engineer to design, deploy, and secure UC solutions for DoD and federal healthcare environments. The role focuses on SIP-based voice, video, and messaging across multi-vendor platforms with emphasis on security, location services, and compliant deployments.

You will configure trunks, endpoints, IVRs, call routing, and migration paths, while coordinating with cybersecurity and DoD teams for RMF/ATO and

Qualifications

• 7+ years designing, deploying, and supporting VoIP/SIP systems.
• Strong command of SIP, RTP, TLS/SRTP and debugging tools.
• Hands-on with FreeSWITCH, Kamailio or OpenSIPS.
• Experience with UCaaS or carrier-grade SIP platforms and SBCs.
• Knowledge of E911, location services, and SIP security.

Responsibilities

• Design and deploy UCaaS environments across cloud, datacenters, and on-prem clusters.
• Configure SIP trunks, IP endpoints, IVRs, queues, and conferencing.
• Implement secure signaling and participate in RMF/ATO activities.
• Collaborate with network teams on routing, QoS, and failover.

Skills

VoIP design

SIP signaling

SIP debugging

UCaaS platforms

SBCs & endpoints

E911/location services

Security/compliance

Troubleshooting

Tools

FreeSWITCH

Kamailio

OpenSIPS

SIP platforms (NetSapiens)

SBCs (Ribbon, AudioCodes, TelcoBridges)

Wireshark/sngrep

Docker/Kubernetes

Job description

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 ZuluCall/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.

Responsibilities

VoIP / Unified Communications Engineering

• Design and deploy ZuluCall/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.

E911 / Location Services

• Configure RedSky/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.

VoIP Security & Compliance

• 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.

Networking & Infrastructure

• 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.

Troubleshooting & Support

• 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.

Qualifications

• 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 FreeSWITCH, Kamailio, or OpenSIPS

• Experience with UCaaS or carrier-grade SIP platforms (NetSapiens preferred)

• Experience with SBCs such as Ribbon, AudioCodes, TelcoBridges, Oracle, or Sangoma

• Strong understanding of E911, ELIN/ERL, RedSky/Intrado, and location services

• Proficiency designing dial plans, IVR flows, queue logic, and call routing policies

• Strong documentation and customer-facing communication skills

Preferred Experience

• Experience working with ShoreTel, 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)

Soft Skills

• 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

Target salary range is between $120,000 - $150,000 commensurate with experience.

Please note that the salary information is a general guideline only. Bowhead considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as, market and business considerations when extending an offer.

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

Applicants may be subject to a pre-employment drug & alcohol screening and/or random drug screen, and must follow UIC’s Non-DOT Drug & Alcohol Testing Program requirements. If the position requires, an applicant must pass a pre-employment criminal background history check. All post-secondary education listed on the applicant’s resume/application may be subject to verification.

Where driving may be required or where a rental car must be obtained for business travel purposes, applicants must have a valid driver license for this position and will be subject to verification. In addition, the applicant must pass an in-house, online, driving course to be authorized to drive for company purposes.

UIC is an equal opportunity employer. Ukpeaġvik Iñupiat Corporation (UIC) considers all applicants for employment without regard to race, color, religion, creed, sex, sexual orientation, gender or gender identity, pregnancy, national origin, age, disability, military/veteran status, marital status, genetic information, or any other legally protected status EOE/D/V. Pursuant to The Alaska Native Claims Settlement Act 43 U.S.C. Sec. 1601 et seq., and subject to other state and federal requirements, UIC and its subsidiaries may legally grant certain preference in employment opportunities to UIC Shareholders and their Descendants. Please view Equal Employment Opportunity posters here .

UIC Government Services (UICGS / Bowhead) provides innovative business solutions to federal and commercial customers in the areas of engineering, maintenance services, information technology, program support, logistics/base support, and procurement. Collectively, the fast-growing Bowhead Family of Companies offers a breadth of services which are performed with a focus on quality results. Headquartered in Springfield, VA, we are a fast-growing, multi-million-dollar company recognized as a top Alaska Native Corporation providing services across the Department of Defense and many federal agencies. Bowhead offers competitive benefits including medical, dental, vision, life insurance, accidental death and dismemberment, short/long-term disability, and 401(k) retirement plans as well as a paid time off programs for eligible full-time employees. Eligible part-time employees are able to participate in the 401(k) retirement plans and state or contract required paid time off programs.

Location US-CA-San Diego

Min USD $120,000.00/Yr.

Max USD $150,000.00/Yr.

Minimum Clearance Required Public Trust (NAC)

Travel Requirement 10% - 25%