Senior Lead VoIP Engineer

Randstad Digital • Ireland

Visa Sponsorship Relocation

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AI Summary

Architect and build carrier-grade, low-latency global telephony systems for a next-generation CCaaS platform. Lead technical direction, mentor engineering teams, and implement robust SBC configurations and failover strategies. Requires 10-12+ years of VoIP expertise with hands-on C/C++ coding and deep protocol knowledge.

Key Highlights

Architect high-scale signaling and media infrastructure using FreeSWITCH, Kamailio/OpenSIPS, and RTPEngine.

Write and debug performance-critical C/C++ code for real-time systems.

Mentor mid-to-senior engineers and lead major incident resolution for live traffic.

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Key Responsibilities

Design high-scale signaling and media infrastructure using FreeSWITCH, Kamailio/OpenSIPS, and RTPEngine.

Implement robust SBC configurations, NAT traversal, load balancing, and automated failover strategies.

Define standards for QoS, call routing, and codec optimization while driving observability and security.

Write and debug performance-critical C/C++ code and lead major incident resolution for live traffic.

Mentor mid-to-senior engineers and partner with cross-functional teams to integrate telephony APIs and carrier trunking.

Technical Skills Required

VoIP C/C++ FreeSWITCH

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Benefits & Perks

Visa sponsorship

Relocation assistance

Job Description

Senior Lead VoIP Engineer

Location: Dublin, Ireland (Hybrid – 3 days/week in office)

Relocation & Visa Sponsorship: Available

About the Role

We are seeking a hands-on Senior Lead VoIP Engineer to drive the architecture, technical direction, and scalability of our next-generation Contact Center as a Service (CCaaS) voice infrastructure. You will design and build carrier-grade, low-latency, and highly available global telephony systems while mentoring engineering teams across the organization.

What You’ll Do

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