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Harper (YC W25) · 2 days ago

Senior Member of Technical Staff, Voice

San Francisco

Full-time

Onsite

Mid, Senior Level

$170K/yr - $275K/yr

3+ years exp

Harperinsure is focused on transforming the insurance industry through advanced voice AI technology. The Senior Member of Technical Staff will own the voice AI infrastructure, responsible for architecture, implementation, and scaling to enhance customer interactions and operational efficiency.

Artificial Intelligence (AI)FinTechInsurance

Responsibilities

Own our entire voice AI infrastructure—architecture, implementation, scaling, continuous improvement

Build outbound lead qualification agents that call thousands of prospects daily

Develop follow-up systems that never forget and personalization that makes every call feel human

Create inbound customer service agents handling policy questions, certificate requests, and claims intake

Implement intelligent routing for human involvement when necessary

Design form-filling agents that conduct 20-30 minute insurance applications over the phone

Establish underwriter follow-up systems and document collection workflows

Transition from low-code platforms to custom infrastructure as we scale

Ensure sub-700ms latency across the voice pipeline and handle 10,000+ concurrent calls

Capture every conversation as structured decision traces and build feedback loops that improve agents based on outcomes

Qualification

Production voice AILow latency systemsTelephony knowledgeCustom infrastructureAI code generationTeam collaborationProblem-solvingAdaptability

Required

You've built production voice AI. Not demos. Real systems handling real calls—significant production volume

You know both fast deployment and custom infrastructure. You've used platforms like VAPI or Retell when speed mattered. You've built custom systems with Pipecat or LiveKit when you needed more control. You know when to use each

You understand telephony. SIP, RTP, WebRTC—you know how voice actually works over networks

You've achieved low latency in production. Sub-second response times on real calls. You know where latency hides and how to eliminate it

You write code with AI. Cursor, Claude Code—you manage multiple coding sessions simultaneously and multiply your output

You're 3-6 years into your career. Senior enough to own systems end-to-end. Recent enough to still be hands-on every day