Enterprise, Voice and AV Engineer

Enterprise Voice & AV Engineer Belfast | Hybrid (3 days in Office) | Full Time | Up to £60,000 At a Glance Small, senior, global team two engineers covering APAC, EMEA, and the Americas; no capacity for hand-holding Salary up to £60,000 depending on experience, with genuine flexibility for the right hire Cloud-first direction of travel active migration away from Cisco Call Manager toward SBC-led cloud voice SBC experience is the priority skill Audio Codes preferred;
Ribbon, Oracle Acme Packet, or Cisco CUBE also considered Supporting trader voice and front office telephony in a global financial services environment Who Youll Work For Our client is a world-leading provider of market infrastructure, connecting global financial and commodities markets through responsible and innovative solutions. Operating from more than 60 offices across 27 countries with over 5,000 people worldwide, they are one of the largest and most established names in their sector.

The Voice and AV team operates as a lean, expert function with global reach. Voice infrastructure directly underpins trader voice and front office telephony an environment where reliability is non-negotiable. The organisation is actively moving away from legacy Cisco Call Manager toward a modern, SBC-led cloud voice architecture, and this hire is central to that programme of work. What Youll Be Doing This is an autonomous engineering role.

Youll be one of two engineers covering a global infrastructure, which means genuine end-to-end ownership from design and implementation through to troubleshooting and delivery. There is no large surrounding team to escalate to; youll be expected to resolve complex issues independently and lead projects from start to finish. Design, implement, and support enterprise voice solutions with a focus on Audio Codes SBCs, Cisco CUBEs, and cloud migration Serve as technical lead on key projects including migrating Audio Codes SBCs to AWS Cloud and replacing legacy Cisco gateways with Audio Codes SBCs Provide advanced troubleshooting across voice, video, and IPTV services including Cisco IP phones, Teams Direct Routing, and Microsoft Teams Rooms Develop and maintain automation scripts (Power Shell, Python, or similar) for SBC provisioning, monitoring and alerting workflows, and bulk migrations Maintain proactive monitoring frameworks to ensure high availability and reliability across global infrastructure Act as L2/L3 escalation point for complex voice, AV, and Microsoft Teams Room issues Ensure compliance with Permit to Operate and Change Control processes Collaborate with internal teams across APAC, EMEA, and the Americas to resolve issues and continuously improve services Your Impact Youll be a key technical authority in a small, high-impact team directly shaping the reliability and modernisation of a voice infrastructure that thousands of employees depend on globally, including front office and trader voice functions where uptime is critical.

Your work on the cloud migration roadmap will define the direction of this teams technology for years to come.

What Were Looking For The team is prioritising depth in at least one of three core skill areas, with the aptitude and willingness to develop across the others. Strong networking fundamentals are required across all profiles. Essential Hands-on SBC experience Audio Codes is the primary platform;
Ribbon, Oracle Acme Packet, or Cisco CUBE experience is considered transferable Solid understanding of SIP trunking, SIP connectivity, and how traffic flows in and out of SBCs Strong networking fundamentals comfortable troubleshooting connectivity issues between voice devices, cloud infrastructure, and on-premises sites independently Experience in at least one of:
Cisco Call Manager / CUCM, Audio Codes or equivalent SBC platforms, or Microsoft Teams enterprise voice and meeting rooms Proven ability to work autonomously end-to-end project ownership, not participation as one contributor among many Cisco collaboration or voice/networking certification (CCNP, CCVP, or equivalent) must be backed by verifiable hands-on experience Desirable Familiarity with the shift from Cisco…