Senior Cisco Voice & UC Engineer (TS/SCI) Poly

B4Corp; Virginia, Northern (MN, KY); Hybrid; USD 135,000 - 225,000; Full time

Benefits offered by this job

Employee Referral Bonus

PTO seven weeks per year

Flexible work schedule

Job summary

B4Corp seeks an experienced Systems Engineer to design, deploy, secure, and sustain enterprise Cisco Voice solutions in a highly secure environment. Requires TS/SCI clearance with polygraph and 11+ years in Voice/UC engineering.

Responsibilities include implementing CUCM, UCCX, and SIP-based systems, supporting site standups, and coordinating PKI and security workstreams. Location: Dulles, VA; Salary up to $225,000 per year.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, IT, Engineering, or related field.
• Minimum of eleven (11) years of relevant Voice/UC engineering experience.
• Strong technical expertise in SIP signaling and call flows, SRTP, SIP, MGCP, H.323, TCP/IP, MPLS, DNS/DHCP, RTP.
• Experience supporting secure, enterprise scale voice environments.
• Ability to troubleshoot complex call routing, signaling, and interoperability issues.

Responsibilities

• Design, test, and deploy Cisco Voice infrastructure (CUCM, Unity Connection, IM&P, UCCX).
• Implement next generation voice system technologies and support first article engineering.
• Participate in security accreditation activities for all voice systems.
• Manage PKI/certificate requirements across Cisco UC components.
• Perform system upgrades, patching, and lifecycle maintenance for hardware and software.
• Provide engineering support for new site standups including dial plan design.

Skills

TS/SCI clearance with polygraph

Voice/UC engineering

Cisco Unified Communications

Education

Bachelor’s or Master’s degree in Computer Science, IT, Engineering, or related field

Tools

CUCM

Unity Connection

IM&P

UCCX

SIP

SRTP

MGCP

H.323

Job description

B4Corp seeks an experienced Systems Engineer to design, deploy, secure, and sustain enterprise Cisco Voice solutions in a highly secure environment. Requires TS/SCI clearance with polygraph and 11+ years in Voice/UC engineering.

Responsibilities include implementing CUCM, UCCX, and SIP-based systems, supporting site standups, and coordinating PKI and security workstreams. Location: Dulles, VA; Salary up to $225,000 per year.