Telecommunications Engineer Specialist (VOIP)

Knowesis Inc.

4d•Onsite

About The Position

Knowesis is seeking a Telecommunications Engineer Specialist (VOIP) to provide advanced engineering support to the DoD OIG ITSS Bridge contract. The role involves delivering Tier III engineering support for the design, implementation, operation, and sustainment of secure Voice over IP (VOIP) and Unified Communications (UC) systems. The position is responsible for ensuring highly available, secure, and compliant voice and collaboration services across both classified and unclassified environments, directly supporting the OIG’s oversight, audit, investigation, and evaluation missions. To be eligible, candidates must have a secret clearance and possess U.S. Citizenship without the need for sponsorship.

Requirements

Bachelor’s degree in Telecommunications, Engineering, Computer Science, or a related field, or an equivalent combination of education and professional experience.
At a minimum of 5 years of hands-on experience supporting enterprise VOIP or Unified Communications systems, with demonstrated Tier III engineering capability.
Proficiency with Cisco CUCM, including dial plan design, call routing, Class of Service (CoS), SIP trunk configuration, and integration with Unity Connection and Expressway/CUBE.
Working knowledge of IP telephony protocols: SIP, H.323, MGCP, RTP/SRTP, and SCCP, along with associated QoS mechanisms (DSCP marking, queuing, and policing).
Experience with DoD or federal IT environments, and familiarity with DoD network architecture (NIPRNet, SIPRNet) and operational security requirements.
Ability to obtain and maintain a DoD security clearance at the Secret level; TS/SCI eligibility is required for personnel supporting the JWICS voice infrastructure.
DoD 8140/8570-compliant baseline certification at IAT Level II or higher: CompTIA Security+ CE, CASP+ CE, or an equivalent certification approved per the DoD Approved Baseline Certifications list.
Cisco CCNP Collaboration (required): demonstrates validated competency in the core Cisco UC platform stack used in the DISA EVVS environment

Nice To Haves

Direct experience supporting DISA Enterprise Voice and Video Services (EVVS), including operational knowledge of DISA UC service delivery processes and of EVVS STIG implementation.
Experience supporting Unified Communications in an oversight, audit, or law enforcement environment, with familiarity with call recording, chain-of-custody, and investigative access-control requirements.
Experience implementing voice cybersecurity controls, DISA VVoIP STIG, and Cisco UCM STIG within classified DoD environments.
Experience in Cisco Emergency Responder (CER) administration, E911 design, and federal facility MLTS compliance under Kari’s Law and the RAY BAUM’S Act.
Familiarity with cloud-based UC solutions and hybrid architectures, including Webex for Government (FedRAMP High) and Microsoft Teams GCC High with Direct Routing enabled.
Experience with DoD SIEM platforms (Splunk preferred) for voice infrastructure log integration, CDM compliance, and anomaly detection.
Knowledge of DoD IPv6 implementation requirements and of dual-stack or IPv6-only VOIP configuration.
Cisco CCIE Collaboration – advanced validation of enterprise UC engineering expertise.
ITIL Foundation (v4 or higher) – supports ITSM-based service delivery within a DoD operational environment.
Certified Information Systems Security Professional (CISSP) – applicable to personnel with significant RMF/ATO duties or those performing security-relevant UC architecture functions.
CompTIA CASP+ CE – meets DoD 8140 IAT Level III requirements for personnel with privileged access to classified UC systems.

Responsibilities

Design, deploy, configure, and maintain enterprise VoIP and Unified Communications systems within the DISA EVVS framework.
Provide Tier III engineering and troubleshooting support for voice, video, and collaboration services across the DoD OIG enterprise.
Integrate VOIP systems with DoD networks, gateways, SBCs, CUCM call managers, Expressway/CUBE SIP trunks, and collaboration platforms.
Support classified and unclassified environments, including NIPRNet, SIPRNet, and JWICS, as mission requirements dictate.
Perform system monitoring, performance tuning, capacity planning, software upgrades, and lifecycle refreshes.
Implement and maintain cybersecurity controls in accordance with DISA STIGs, including the Voice Video over IP (VVoIP) and Cisco UCM STIGs, as mandatory ATO maintenance requirements.
Apply DoD Risk Management Framework (RMF) controls per DoDI 8510.01; contribute to system security plans (SSPs), security assessment reports (SARs), and Plans of Action and Milestones (POA&Ms).
Implement Zero Trust principles for voice infrastructure in accordance with the DoD Zero Trust Strategy (2022) and the DoD Zero Trust Reference Architecture.
Integrate VOIP systems with DoD SIEM platforms (e.g., Splunk) to support CDM program requirements, including call record logging, authentication event monitoring, and toll fraud detection.
Ensure compliance with Section 508 accessibility requirements (ICT Standards and WCAG 2.1) across all UC deployments and upgrades; conduct VPAT reviews for new platform components.
Support IPv6 readiness across VOIP infrastructure in accordance with OMB Memo M-21-07 and DoD IPv6 implementation roadmap requirements.
Administer Cisco Emergency Responder (CER) to ensure compliance with Kari’s Law (2018) and the RAY BAUM’S Act requirements for direct 911 dialing and dispatchable location routing across all DoD OIG facilities.
Support incident response, continuity of operations (COOP), and disaster recovery planning and execution for voice services.
Develop and maintain technical documentation, network diagrams, SOPs, configuration baselines, and as-built records for all VoIP and UC systems.
Coordinate with DISA, the DoD CIO, OIG mission stakeholders, and UC platform vendors to plan and implement system changes, upgrades, and service requests.
Participate in change, incident, and problem management processes consistent with ITIL service management practices.