Haystack
← Back to Jobs
Remote
Full time
Other
VA

Member of Technical Staff, Product

VapiSan Francisco🇺🇸United StatesPosted 21 May 2026

Quick Overview

Seniority
Mid Senior
Employment type
Full Time
Work mode
Remote
Location
San Francisco, United States
Posted
3 months ago
HTTPSLLMLeverReactTypeScript

Job Description

Vapi (/ˈVɑːpi/):

  • Voice AI that resolves, not transfers

  • Powering 1 billion calls for companies like Amazon Ring, Intuit, ServiceTitan, and New York Life

  • Trusted by 1 million developers building the future of voice agents

  • Backed by Peak XV, Bessemer, Kleiner Perkins, M12, Y Combinator, and more with $72M raised

  • Try talking to Vapi now!

Why We’re Hiring This Role:

1M+ developers and 2.7M+ agents are built on our product surface.

Every assistant lives in our dashboard: Composer, Simulations, Monitoring, Knowledge Base, Versioning, Deployments. Non-deterministic systems, real-time call observability, eval loops, and a builder UX that has to feel like magic.

We're shipping the loops that take an agent from "demo" to "live in production for the Fortune 500."

 

What You’ll Do:

 

First 30 Days:

  • Make real calls. Build real assistants on Vapi across our main provider integrations (LLMs, STT, TTS, telephony). Get a working mental model of the platform end to end.

  • Ship your first product feature into customer hands.

 

By 60 Days:

  • Own a product area outright within the agent self-improvement loop or the trust and guardrails platform.

  • Drive a feature from spec to ship with PM and design, including the eval and rollout loops.

  • Use AI coding agents (Claude Code, Cursor, or similar) as a serious lever on your throughput.

 

By 90 Days:

  • Operate as a full peer to engineers on the team, owning your area without handholding.

  • Run the agent improvement loop end to end in your domain: authoring, evaluation, deployment, observation, iteration.

  • Be a core voice in product decisions, with multiple shipped features on your watch.

 

Who You Are:

 

Must-Haves

  • 5+ years building product, with 2+ at an early-stage company.

  • Strong full-stack engineer, fluent in TypeScript, React, and a Node-based backend.

  • Track record shipping beautiful product surfaces that customers love and competitors copy.

  • Product instinct. You read a half-formed problem and figure out the right shape before someone hands you a spec.

  • Daily use of AI coding agents (Claude Code, Cursor, or similar) with opinions about where they help and where they don't.

  • Self-directed. You read the PR, open the product, and start building without waiting on permission.

  • Customer empathy and a bias for action: you ship, you own outcomes, and you care what users actually experience.

 

Nice-to-Haves

  • Background in voice AI, conversational AI, LLM applications, or telephony.

  • Worked on a developer-facing product (APIs, SDKs, dashboards) where the audience is technical.

  • You've built your own startup, or shipped a side project people actually use.

  • Open-source contributions or public writing on engineering, design, or product practice.

 

Why Vapi:

 
  • Generational impact: Build the human interface for every business.

  • Ownership culture: 70% of the company are previous founders.

  • Kind team: The founders, Jordan and Nikhil, are Canadians.

  • Tier-1 Investors: Peak XV (Series B), Kleiner Perkins, M12, Bessemer, YC.

 

What We Offer:

 
  • Real stake: Competitive salary and excellent equity ownership.

  • Comprehensive health coverage: medical, dental, and vision plans.

  • Team love: We love hanging out, and we do quarterly off-sites.

  • Flexible time off: take what you need.

  • More: catered meals, transportation, gym, and a $10k annual L&D budget.

Similar jobs