Principal Software Engineer Real Time Voice

You will own the technical direction and roadmap for real-time Voice/VoIP infrastructure. You will design low-latency, highly available voice systems; resolve systemic call-quality issues; set standards for reliability, observability, and security; and guide senior engineers on complex voice engineering decisions.

Responsibilities

• Own the architecture and technical roadmap for Voice/VoIP infrastructure
• Design low-latency, highly available voice systems at enterprise scale
• Drive technical decisions on real-time media protocols and standards
• Optimize integrations between voice infrastructure and conversational AI models
• Diagnose and resolve call-quality, latency, jitter, and packet-loss issues
• Define engineering standards for reliability, observability, and security
• Mentor senior and staff engineers
• Evaluate and integrate telephony providers, carriers, and SIP trunk vendors
• Represent technical voice expertise with enterprise customers and partners

Requirements

• 10+ years of engineering experience
• 5+ years of hands-on experience building, operating, or debugging production Voice/VoIP, SIP, WebRTC, or carrier-grade voice infrastructure
• Knowledge of SIP, SDP, RTP/SRTP, RTCP, WebRTC, ICE, STUN/TURN, and real-time media transport
• Understanding of audio codecs, codec negotiation and transcoding, DTMF/RFC2833, jitter buffers, packetization, and quality and latency trade-offs
• Experience with large-scale distributed real-time systems
• Experience owning architecture for complex systems
• Experience with telephony carriers, SIP trunk providers, or PSTN integrations
• Hands-on ownership of enterprise-scale SIP-based voice infrastructure
• Systems programming skills in Go, C, C++, or Rust
• Experience with AWS, GCP, or Azure and Kubernetes
• Experience with voice-quality observability and telemetry