Systems Engineer

Labor Category:
Systems Engineer

Position Title:

Systems Engineer
Position Level: Level 3 – Senior
Salary:
Up to $ per year
Core

Hours:

9am to 4pm

Location:

Herndon VA

Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph.

We are seeking an experienced Cisco Voice Engineer to support a mission‑critical, technology‑driven program for a key Government customer. This role focuses on designing, deploying, securing, and sustaining enterprise‑level Cisco Unified Communications solutions across a complex, highly secure environment.

Design, test, and deploy new 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 and endpoint provisioning.

Design, test, and deploy call center technologies (UCCX/UCCE), including user training and transition planning.

Execute tasks related to call routing, SIP trunking, SRST, CUBE, and gateway configuration.

Collaborate with customers and internal teams to gather and refine system requirements.

Ensure compliance with enterprise standards, policies, and security procedures.

Work within a large‑scale enterprise IT environment with responsibilities specific to Cisco Voice and Unified Communications.

Partner with network engineering and telecom teams on integration activities involving telephony, call center systems, and network infrastructure.

Support secure communications devices and infrastructure, including VoIP phones, STEs, Viper phones, encryption devices, POTs/ISDN/leased lines, conference bridges, and call management servers.

Labor Category:
Systems Engineer

Position Title:

Systems Engineer
Position Level: Level 3 – Senior
Salary:
Up to $ per year
Core

Hours:

9am to 4pm

Location:

Herndon VA

• Developmental (0-2 years’ experience)
• Full Performance (3-5 years’ experience)
• Senior (6-10 years’ experience)
• Expert (11-15 years’ experience)
• SME (16+ years’ experience)

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

Minimum of six (6) years of relevant Voice/UC engineering experience

SIP signaling and call flows

Secure Real‑Time Transport Protocol (SRTP)

SIP, MGCP, H.323

TCP/IP networking

MPLS transport environments

DNS and DHCP

RTP media handling

Experience supporting secure, enterprise‑scale voice environments

Ability to troubleshoot complex call routing, signaling, and interoperability issues

Strong communication skills for documentation, requirements analysis, and customer interaction

Advanced expertise in SIP signaling, call flows, and multi‑vendor integration

Experience with H.323 in mixed‑protocol environments

Cisco Certified Collaboration Professional (CCCP) or equivalent Cisco Collaboration certifications:

CCNP Collaboration

CCIE Collaboration (highly desirable)

Avaya Communications Certification or experience supporting Avaya platforms in hybrid Cisco/Avaya environments

Experience with secure communications devices (VoIP endpoints, STEs, Viper phones, encryption devices)

Familiarity with government security accreditation processes and PKI/certificate management

Experience designing or supporting call center technologies (Cisco UCCX/UCCE or Avaya equivalent)

B4

Corp is a small defense contracting company that focuses on providing an optimum environment for mission‑focused, highly skilled consultants to support the United States…