Nooks · 3 months ago
Senior Software Engineer, Voice AI
San Francisco
Full-time
Onsite
Senior Level
$215K/yr - $280K/yr
6+ years expNooks is an AI Sales Assistant Platform that automates sales processes, helping sales reps focus on generating more pipeline. They are seeking a Senior Software Engineer to own backend infrastructure for real-time audio/video calling, ensuring call quality and latency while developing advanced features and debugging tools.
Artificial Intelligence (AI)Information TechnologyProductivity ToolsSales Automation
Responsibilities
Own backend infrastructure for real-time audio/video calling (Twilio, Salesfloor, A/V quality, recordings, transcriptions) to deliver a dialer that scales reliably to 10× volume
Architect and improve real-time voice infra (WebRTC/SIP/Twilio)
Ensure call quality and latency meet SLA targets globally
Build services for advanced features (call transfers, monitoring, recordings)
Develop observability and debugging tools for call flows
Partner with Product/Support to enable new A/V features and fast issue resolution
Qualification
Required
6–10+ years backend/infra engineering with real-time A/V or telephony systems
Hands-on experience with WebRTC, SIP, Twilio, or similar stacks
Strong foundation in distributed systems and low-latency infra
Experience debugging and optimizing QoS (latency, jitter, packet loss)
Benefits
Equity in the form of options
Comprehensive health, dental, vision, life and disability insurance coverage
Hybrid work
Unlimited paid time off
Company
Nooks
Nooks is an applied AI lab that powers modern sales teams.
51-200 employees
H1B Sponsorship
Nooks has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (10)
2024 (2)
2023 (1)
Funding
Current Stage
Growth StageTotal Funding
$70MKey Investors
Kleiner PerkinsLachy GroomTola Capital
2024-10-22Series B· $43M
2024-04-24Series A· $22M
2021-07-14Seed· $5M
Leadership Team
Daniel Lee
Co-Founder, CEO
Recent News
2025-11-19
Crunchbase News
2025-09-03
Company data provided by crunchbase