Member of Technical Staff, Backend

Vapi (/ˈVɑːpi/):

We're bending the arc of technology back to the human voice.

We're the most configurable platform for deploying voice agents.

1M+ developers build on Vapi, and we power 1M+ calls a day for companies like Amazon, Intuit, and New York Life.

We just closed our $50M Series B at a $500M valuation, after crossing a billion calls.

Try talking to Vapi now! https://vapi.ai/

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."

• It's freakin hard and a lot of fun.

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.