Senior Software Engineer, Voice AI
At a glance
Senior Software Engineering role at Nooks. San Francisco · full-time · $215,000–$300,000 base.
techroles summary, based on the employer's posting.
What you'll do
- Build low-delay voice agents that identify voicemail and navigate phone menus or virtual assistants
- Turn call transcripts into conversion patterns, coaching insights, and tools managers use to spot team-wide trends
- Work with customers directly, then ship fixes based on what you hear from them
- Set technical direction for agent response timing and recommendations that help reps book demos
- Review code and designs, and pair with teammates on difficult engineering work
What you bring
- At least five years of software engineering experience, with depth in React, TypeScript, Node.js, Python, or a related stack
- You have shipped AI features in production, including work under tight response-time limits and experience evaluating results
- You can reason about operating real-time systems at high call volumes, including capacity, service quality, and observability
Who this fits
This role suits a senior engineer who enjoys building real-time voice and call-analysis systems, investigating user calls, and helping other engineers work effectively. You must be based in San Francisco and ready to work from the office at least three days a week.
From the employer
About Nooks.ai:
Nooks is an applied AI lab building the Agent Workspace for GTM. We design AI agents that operate across the full sales action set, from account strategy to prospect research and outreach. Building 0→1 has never been easier, but selling at the speed of the market remains the last frontier for AI. Our mission is to 10x every seller by automating the busywork so they can focus on what humans do best: closing deals.
Today, over 1,500 customers run on Nooks, including Notion, HubSpot, Cursor, and Rippling. We’ve raised $70M+ from top VCs like Kleiner Perkins, which made its first sales-tech investment in over a decade with us. Since then, we’ve tripled ARR each year for 3 years running and grown a high-caliber team turning the art of sales into a scalable science.
About the Role
Most sales calls don't connect. The ones that do go through a maze: voicemails, phone trees, virtual assistants. Voice AI is the bet that an agent can navigate that maze, guide reps in real time, and turn the resulting transcripts into coaching insights that make whole teams convert better. We run roughly 100 million calls a week today — hyperscaler volume for real-time voice. We're hiring senior engineers to push both sides forward.
What you'll do
Build real-time, low-latency Voice AI. Voicemail detection, IVR and virtual assistant navigation, in-call guidance for reps.
Build the call intelligence on top. Transcript analysis, conversation funnels, Markov models of the calls that convert vs. don't, the manager-side product where coaches find patterns across whole teams.
Work directly with customers. Our biggest accounts have shared Slack channels with our engineers; you'll be on calls with users one day and shipping fixes back to them the next.
Make foundational technical decisions. How low can latency go for a voice agent that's still useful? Given the first half of a call, what should the system recommend to maximize the chance the rep books a demo?
Mentor others on the team. Run code and design reviews, and pair on the hardest problems.
You might be a strong fit if:
5+ years of engineering experience, with depth in something close to our stack (React, TypeScript, Node.js, Python). Bonus for experience operating real-time or low-latency systems at scale.
Production experience with AI features. For example, you've shipped a model under a strict latency budget and have opinions about evals.
Strong opinions, held loosely, about what it takes to run real-time voice at hyperscaler volume — capacity, QoS, observability, the things that break first when you 10x traffic.
Not afraid to listen to a few hundred calls to figure out what's actually broken.
You make the rest of the team faster.
Based in San Francisco, excited to be in-office 3+ days per week.
At Nooks You'll Enjoy
A world-class team. Around 40 engineers, mostly former founders or founding engineers and veteran builders from places like Applied Intuition, Scale, Airtable, Citadel, and Jane Street. Thirteen Olympiad medals across the team.
A product that drives most of the company's revenue. Teams trial the dialer first and see 5–10x productivity gains within their first two weeks.
Top-of-market compensation.
Equal Employment Opportunity Statement
Nooks is an equal opportunity employer committed to fostering a diverse and inclusive workforce. We believe in providing equal employment opportunities to all individuals regardless of race, color, religion, gender, gender identity, sexual orientation, national origin, age, disability, veteran status, or any other characteristic protected by law.
Nooks does not discriminate in hiring, promotion, compensation, or any other employment practices, and we are committed to ensuring a workplace that is free from discrimination, harassment, and retaliation. We encourage individuals from all backgrounds to apply and join our team.
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