Senior Lead - VOIP Engineer

Posted 15 days 8 hours ago by Unified-CXM Ireland Limited

Permanent
Full Time
Other
Dublin, Dublin, Ireland
Job Description
What You'll Do
  • Design and implement VOIP (signaling and media) infrastructure using FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine
  • Architect session border controllers (SBC), NAT traversal, load balancing, and failover strategies
  • Define standards for call routing and audio quality optimization (codecs, jieer, etc.)
  • Lead initiatives for scalability, observability, security, and resiliency of our voice infrastructure
  • Troubleshoot live traffic and provide technical leadership during major incidents
  • Collaborate with Backend and API teams to design provisioning, billing, and call analytics APIs
  • Evaluate and onboard open source tools or commercial carriers as needed
  • Coach and mentor junior/lead engineers in VoIP best practices
What Makes You Qualified?
  • 12+ years of hands on experience in the Telephony / VoIP / CPaaS domain
  • Strong knowledge of VoIP Protocols (SIP/SDP, RTP/RTCP), Networking fundamentals (UDP/TCP/IP, DNS, MPLS), QoS (latency, jieer, packet loss)
  • Hands on experience with Session Border Controller (SBC), Media Servers and WebRTC
  • Expert level understanding of SIP, RTP, NAT traversal (ICE/STUN/TURN), and VoIP security (TLS, SRTP, fraud preven8ion)
  • Hands on development experience with FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine
  • Experience in designing carrier grade telephony platforms serving millions of calls
  • Strong systems programming and debugging skills in C/C++
  • Strong troubleshooting skills, with experience using network monitoring and debugging tools
  • Familiarity with distributed systems and cloud based deployments (AWS, GCP, Azure)
  • Excellent problem solving, debugging, and performance tuning skills
To be Successful
  • Hands on experience in C/C++ development for real time systems
  • VoIP protocols: SIP signaling, SDP negotiation, RTP/RTCP media handling
  • Media servers: FreeSWITCH, Kamailio/OpenSIPS, or RTPEngine
  • Carrier grade telephony infrastructure: SBCs, NAT traversal (ICE/STUN/TURN), and securing voice traffic with TLS/SRTP
  • Cloud contact center or CPaaS platforms, including PSTN/SIP trunking and global carrier integrations
Equal Employment Opportunity

Sprinklr is a proud equal opportunity employer and complies with all federal, state, and local laws regarding equal employment opportunity. We provide reasonable accommodations upon request and are committed to diversity and inclusion.