IP Telephony Engineer

Diacom Computer Telephony (Diacom) is a communication service company, which

specialises in helping our customers deploy innovative, technically advanced solutions

in Voice, Data, SAN/Storage and Cyber Security. These high-performance solutions

thus providing our customers with a competitive advantage within the marketplace.

Diacom is an indigenous Irish company that has been in business and profitable for

over 25 years.

The IP Telephony Engineer is responsible for the design, implementation, optimisation, and ongoing support of advanced IP telephony and Unified Communications (UC) solutions across Diacom’s customer environments. This role ensures the stability, performance, security, and scalability of customer telephony platforms while supporting business growth, service excellence, and continuous innovation within the Telephony division.

• Deploy and support enterprise voice technologies, including Session Border Controllers (SBCs), SIP services, VoIP gateways, firewalls, and network switches.
• Design, deploy, configure, and maintain Unified Communications infrastructure across on-premises and cloud-based environments.
• Support and manage enterprise UC platforms to ensure high availability and performance.
• Integrate IP telephony solutions with data networks, MPLS, VPNs, and cloud services.
• Plan and manage firmware upgrades, scheduled maintenance windows, and infrastructure enhancements.
• Provide Level 2 and Level 3 support for IP telephony and UC services in line with customer SLAs.
• Perform testing, provisioning, monitoring, and operational support for voice network services.
• Respond to incidents and emergencies, including after-hours support for critical infrastructure events.
• Troubleshoot complex voice, media, and signalling issues using packet captures, logs, and diagnostic tools.
• Produce detailed reports for stakeholders on telephony performance, trends, incidents, and outcomes.
• Collaborate with Networks, Managed Services, Cybersecurity, and Helpdesk teams on inter-departmental initiatives.
• Provide technical input to Sales and Account Management teams, including solution design and pre‑sales support.
• Participate in the monthly after-hours on‑call roster for critical events.
• Participation in on‑call rotation or after-hours incident response. xcfaprz

• 2 - 4 years experience
• Irish or EU Citizen
• Experience with Yealink and Cloud is a big differential.
• Full Driver’s License is a must

As a valued member of our team, you have access to a range of benefits and perks to