Sr. Software Engineer (Telephony)

TL;DR

Sr. Software Engineer (Telephony): Maintaining and modernizing real-time media services and telephony engines with an accent on low-latency media pipelines and backend API architecture. Focus on optimizing voice/video codecs, RTP flows, and resolving complex production issues across PSTN and WebRTC.

Location: Must be based in either Vancouver or Kitchener, Canada

Salary: $151,000 - $175,000 CAD (for Ontario)

Company

AI-native business communications platform that unifies calling, messaging, and meetings through real-time AI-driven insights.

What you will do

• Maintain and modernize real-time services on Telephony Engines and architect backend libraries and APIs.
• Build and optimize low-latency media pipelines for voice and video, tuning codecs and RTP flows.
• Investigate and resolve complex production issues across PSTN and WebRTC using PCAPs and observability tools.
• Execute load, failover, and regression tests to validate scalability and system resilience.
• Collaborate with Tel Cloud, Tel Edge, and AI teams to design end-to-end call flows.
• Manage Terraform and GKE-backed rollouts and participate in on-call rotations.

Requirements

• Must be based in Vancouver or Kitchener, Canada
• 5+ years of software engineering experience with production backend systems in SaaS or real-time communications.
• Deep expertise in C/C++ and Python.
• Experience with or strong interest in SIP, WebRTC, RTP/RTCP, and media codec negotiation.
• Ability to troubleshoot real-time media quality issues such as jitter and packet loss.
• Bachelor's degree in Computer Science or equivalent practical experience.

Culture & Benefits

• Opportunity to work at the center of the AI transformation in business communications.
• Competitive salary and comprehensive benefits package.
• Access to cutting-edge AI tools and robust training programs.
• Inclusive and vibrant office environment designed for collaboration.