Telephony Engineer DP Professionals • Columbia, South Carolina •

PERMANENT

Updated 08/24/2026 Job Description Job Summary DPP is seeking a Telephony Engineer for an opportunity with our client in Columbia, SC. Work location: Fully onsite in Columbia, SC

Duration:

6 months with possibility of extension

Terms:

W2 Contract Candidate location: Must be a SC resident or willing to relocate to SC prior to starting the role Work authorization: Must be a US Citizen or Legal Resident

Responsibilities:

Provide operational and advanced telephony administration. Respond to move, add, change, and disconnect requests for voice, voicemail, conference services, safety devices, telephone IVR, vectoring and call center requests, and unified communication services. Responsible for maintaining accurate 911 location information. Provide exceptional customer service and professional interaction to build and maintain operational credibility. Create detailed technical notes and documentation. Create knowledge base articles for internal and customer consumption. Use systems for tracking work performed and labor hours. Provide advanced technical support for projects and serve as lead for tasks required to maintain telephony network systems. Research, design, maintain, and implement improvements to enterprise telephony network. Includes advanced system and hardware configuration and installation of related equipment including media gateways, telephones, and safety devices. Develop and document standards, processes, and configurations. Perform quality assurance testing. Work with vendors to provision new circuits and outage resolutions. Analyze and evaluate vector routing, ARS routing tables and route patterns to ensure efficient operation. Diagnose and resolve related issues. Perform surveys of existing telephone systems and provide recommendations for the use of specific technologies to solve discrete problems. Provide technical input and recommendations for strategic direction of enterprise telephony services. Serve as primary point of escalation for technical work. Provide operational and engineer-level support for enterprise telephony network and unified communications. Respond to customer incident tickets and provide resolution. Coordinate multi-team efforts to resolve outages quickly. Perform advanced maintenance and repair to telephony and unified communications systems to ensure optimal performance and long-term efficiencies. Seek opportunities for automation to streamline operational processes and work with a team to implement. Work collaboratively with team members, other groups, and vendors to increase service quality. Provide proactive support to improve the efficiency and resiliency of service and to decrease outage time. Monitor telephony and network systems to increase proactive problem resolution and ensure maximum uptime. Provide detailed documentation of existing systems and maintain documentation accuracy as enhancements are made, to include system diagrams.

Required Qualifications:

2+ years of experience with Avaya on premise PBX systems 2+ years of experience administering VoIP and unified communications platforms. 2+ years of experience with SIP, RTP, QoS, dial plans, call routing, and voice gateway technologies. 2+ years of experience troubleshooting voice quality, call routing, carrier connectivity, and E911 services. 2+ years of experience with telecommunications infrastructure, including voice circuits, session border controllers (SBCs), and PSTN integration.

Additional Skills & Requirements:

Moderately complex to complex knowledge of telephone network services. Moderately complex to complex knowledge of methods of telephone network design. Ability to present technical and non-technical reports in a clear and concise manner. Ability to establish effective working relationships with vendors, management staff, and users. Advanced knowledge of systems administration techniques and tools. Strong interpersonal and communication skills and ability to manage multiple, shifting priorities Ability to participate in an on-call rotation and perform occasional after-hours maintenance and incident response activities.

Required Education:

Bachelor's degree or equivalent work experience.

Preferred Requirements:

Experience designing, implementing, and supporting enterprise cloud-based telephony solutions, including migration from on-premises telephony platforms to cloud-based services. Interested?

Learn more:

Click the apply button to learn more about this position (26-01034). DP Professionals (DPP) offers a range of compensation and benefits packages to our employees and their eligible dependents. DPP is a certified Woman-owned Small Business Enterprise (WBE and WOSB) with more than 25 years in the staffing industry.

EOE/AA/V/D

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