Lead Voice Infrastructure Engineer
Core
Design, build, and operate telephony services and realtime voice infrastructure to power AI-driven voice agents for B2B accounts receivable collections.
Role type
Lead Voice Infrastructure Engineer
Builds
Production phone interactions, AI voice agent pipelines, and telephony services for finance teams.
Domain
Telecommunications infrastructure, AI voice systems, B2B finance.
Deliverable
production ML models | infrastructure
Required skills
distributed backend systems, telephony systems (SIP, RTP, PSTN), carrier integrations, call routing, signaling and media systems, API design, incident response, packet capture analysis
Preferred skills
experience with STT/TTS integration, agent orchestration, warm transfer logic, DTMF interaction
Technologies
SIP, RTP, PSTN, carrier APIs
Responsibilities
Design and operate telephony services managing phone numbers, SIP trunks, and call routing; Develop reliable signaling and media systems bridging telephony with AI pipelines; Build core voice workflows including outbound calling, inbound routing, and voicemail handling; Work with speech and AI systems on turn-taking and interruption handling; Improve call quality, latency, and reliability across the voice stack; Build internal APIs for voice capabilities; Instrument workflows to measure business outcomes; Handle production issues including packet captures and vendor debugging.
Seniority
Senior, hands-on IC