Senior Lead – VOIP Engineer

Location: Ireland — Dublin; relocation to Dublin required, with office attendance 3 days per week

Company

hirify.global provides an AI-native Unified Customer Experience Management platform covering customer service, social media, marketing, advertising, feedback, and omnichannel contact center operations.

What you will do

• Design and implement VoIP signaling and media infrastructure using FreeSWITCH, Kamailio/OpenSIPS, and RTPEngine.
• Architect session border controllers, NAT traversal, load balancing, failover, and carrier-grade call routing.
• Lead scalability, observability, security, resiliency, and audio-quality initiatives for voice infrastructure.
• Troubleshoot live traffic and provide technical leadership during major incidents.
• Collaborate with Backend, API, DevOps, Product, and QA teams on provisioning, billing, and call analytics APIs.
• Evaluate infrastructure tools and carriers while coaching engineers on VoIP best practices.

Requirements

• 12+ years of hands-on experience in Telephony, VoIP, or CPaaS.
• Expertise in SIP/SDP, RTP/RTCP, ICE/STUN/TURN, TLS, SRTP, QoS, and networking fundamentals including UDP/TCP/IP, DNS, and MPLS.
• Hands-on experience with SBCs, media servers, WebRTC, PSTN/SIP trunking, and global carrier integrations.
• Active C/C++ development and strong systems programming, debugging, and performance-tuning skills.
• Experience designing carrier-grade telephony platforms serving millions of calls.
• Familiarity with distributed systems, AWS, GCP, Azure, network monitoring, and debugging tools.

Culture & Benefits

• Collaborative environment centered on customer focus, trust, teamwork, and accountability.
• Voluntary healthcare coverage for employees and families where applicable.
• Paid time off for rest and personal wellbeing.
• Mentoring program supporting professional growth.
• Equal-opportunity workplace with reasonable interview accommodations available.