Sr. Cisco Voice Engineer

i270 Solutions Group LLC; Virginia; On-site; USD 140,000 - 180,000; Full time

Job summary

i270 Solutions Group LLC. is seeking an expert Senior Cisco Voice Engineer to lead enterprise Cisco Unified Communications initiatives within secure, government-grade environments.

The role covers architecture, deployment, security accreditation, and ongoing lifecycle support for mission-critical UC solutions. The ideal candidate has TS/SCI with poly, 6+ years of UC engineering, and deep expertise in CUCM, SIP, PKI, and call center technologies.

Qualifications

• 6+ years of progressive Voice/UC engineering experience
• Expertise designing, deploying, and sustaining Cisco UC in large enterprises
• Experience with security accreditation processes for UC/voice systems

Responsibilities

• Lead lifecycle of enterprise Cisco UC infrastructure from architecture to deployment and ongoing maintenance
• Design and implement next‑gen voice systems and call center technologies
• Coordinate integration across telephony, network, and secure communications for mission‑critical environments
• Support security hardening with PKI, SRTP, and compliance workflows

Skills

CUCM

Unity Connection

IM&P

UCCX/UCCE

SIP protocols

SIP trunking

CUBE

PKI management

Security accreditation

Dial Plan design

Call center tech

Secure comms

Education

Bachelor’s or Master’s in CS/IT/Engineering

Job description

Senior Cisco Voice Engineer | Unified Communications & Secure Infrastructure | Active TS/SCI with CI Poly Required

Are you an expert-level Cisco Voice Engineer with a passion for designing and sustaining enterprise-grade Unified Communications solutions in some of the most secure and complex environments in the world? We are looking for a technically elite, mission-focused professional ready to lead voice engineering efforts in direct support of a critical government program.

WHAT YOU'LL DO

As a Senior Cisco Voice Engineer, you will serve as a key technical leader responsible for the full lifecycle of enterprise Cisco Unified Communications infrastructure — from architecture and deployment to security accreditation, lifecycle maintenance, and advanced troubleshooting. You will design and implement next-generation voice systems, lead call center technology rollouts, and ensure seamless integration across telephony, network, and secure communications infrastructure. Whether you're engineering a new site standup, hardening UC components with PKI and SRTP, or collaborating with network and telecom teams on complex integration activities, your expertise will be central to the reliability and security of mission-critical communications for a high-profile government customer.

WHAT WE'RE LOOKING FOR

Required Qualifications:

• Clearance: Active Top Secret/SCI clearance with Full Scope Polygraph (FS Poly) required
• Education: Bachelor's or Master's Degree in Computer Science, Information Technology, Engineering, or a related field
• Experience: 6+ years of progressive, hands-on Voice and Unified Communications engineering experience

Required Technical Skills:

• Cisco UC Suite: Expert-level experience designing, deploying, and sustaining Cisco Unified Communications Manager (CUCM), Unity Connection, IM&P, and UCCX/UCCE in large enterprise environments
• SIP & Signaling Protocols: Expert proficiency in SIP signaling and call flows, MGCP, H.323, and SRTP, with the ability to troubleshoot complex, multi-layered call routing and signaling issues
• Voice Infrastructure: Deep hands-on experience with call routing, SIP trunking, SRST, CUBE, and gateway configuration across multi-site enterprise environments
• Networking Fundamentals: Strong working knowledge of TCP/IP, DNS, DHCP, RTP media handling, and MPLS transport environments as they relate to voice infrastructure
• PKI & Certificate Management: Experience managing PKI and certificate requirements across Cisco UC components in secure, compliance-driven environments
• Security Accreditation: Demonstrated participation in security accreditation activities for voice and UC systems
• Dial Plan & Endpoint Provisioning: Proven ability to design dial plans and provision endpoints for new site standups and large-scale deployments
• Call Center Technologies: Experience designing, deploying, and supporting UCCX/UCCE solutions, including user training and transition planning
• Secure Communications: Hands‑on experience supporting secure communications devices and infrastructure, including VoIP phones, STEs, Viper phones, encryption devices, POTs/ISDN/leased lines, conference bridges, and call management servers
• Stakeholder Engagement: Strong written and verbal communication skills for technical documentation, customer collaboration, and cross‑functional leadership

NICE TO HAVE

Preferred Qualifications:

• Cisco Collaboration Certifications: CCNP Collaboration strongly preferred; CCIE Collaboration is highly desirable
• Multi‑Vendor Integration: Expertise in SIP signaling and call flows across multi‑vendor environments, including H.323 in mixed‑protocol deployments
• Avaya Experience: Avaya Communications certification or hands‑on experience supporting Avaya platforms in hybrid Cisco/Avaya environments
• Government Accreditation Processes: Familiarity with DoD, IC, or other high‑security environment accreditation processes and compliance frameworks
• High‑Security Environment Background: Prior experience working in DoD, Intelligence Community, or other classified environments is a significant advantage
• Advanced Secure Communications: Deeper experience with encryption devices, classified voice infrastructure, and secure endpoint management beyond standard enterprise deployments

i270 Solutions Group LLC., is an Equal Opportunity/Affirmative Action employer and all qualified applicants will receive consideration without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran or disability status, or any other characteristic protected by law.