Member of Technical Staff, Product

Vapi

San Francisco, US

Who this role is best for

Best suited to senior full-stack engineers with early-stage company experience who thrive in self-directed product development roles within voice AI.

Best fit for

Senior engineers who ship beautiful product surfaces competitors copy.
— “Track record shipping beautiful product surfaces that customers love and competitors copy.”
Self-directed builders who start without waiting for permission.
— “Self-directed. You read the PR, open the product, and start building without waiting on permission.”
Developers comfortable using AI coding agents daily.
— “Daily use of AI coding agents (Claude Code, Cursor, or similar) with opinions about where they help and where they don't.”

Things to consider

Must have 2+ years at an early-stage company.
— “5+ years building product, with 2+ at an early-stage company.”
Requires fluency in TypeScript, React, and Node-based backend.
— “Strong full-stack engineer, fluent in TypeScript, React, and a Node-based backend.”

How to stand out

Showcase side projects or open-source contributions in voice AI.
— “You've built your own startup, or shipped a side project people actually use.”
Demonstrate ability to own product areas without handholding.
— “Operate as a full peer to engineers on the team, owning your area without handholding.”
Highlight experience with developer-facing products like APIs or SDKs.
— “Worked on a developer-facing product (APIs, SDKs, dashboards) where the audience is technical.”

Pace · Fast PacedCollaboration · HighAutonomy · HighDecision Impact · TeamLevel · Senior

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

ship product features
own product areas
operate as a full peer to engineers
run agent improvement loop end to end
be a core voice in product decisions

Typical background

5+ years building product2+ years at an early-stage companystrong full-stack engineer

Skills & requirements

Required

Full-stack EngineeringTypeScriptReactNode.jsProduct InstinctAI Coding AgentsSelf-directedCustomer Empathy

Preferred

Voice AIConversational AILLM ApplicationsTelephonyDeveloper-facing ProductStartup ExperienceOpen-source ContributionsPublic Writing

Stack & domain

TypeScriptReactNode-based BackendAi Coding Agents (claude Code, Cursor)LeadershipProduct InstinctCustomer EmpathySelf-directedVoice AiTelephony

About the role

Original posting from Vapi via Ashby

Voice AI that resolves, not transfers.
Most phone systems trap callers in menus and scripts. Vapi is the platform for deploying voice agents that know your business and can listen, adapt, and resolve in minutes.
The numbers: 1 billion calls. 1 million developers. 10x enterprise ARR growth
The customers: Amazon Ring, ServiceTitan, New York Life, Intuit, Kavak, and thousands more, from YC startups to the Fortune 500
The news: a $50M Series B led by Peak XV Partners, with Bessemer Venture Partners, Kleiner Perkins, M12 (Microsoft's Venture Fund), Y Combinator, and our earlier backers. Total raised: $72M
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.

Source: Vapi careers (Ashby)