Vapi

Vapi lets enterprises deploy human-like voice agents in minutes. Whether you’re building a voice product or trying to handle millions of calls, Vapi’s reliable infrastructure and flexible APIs make it easy. Everyone from YC startups to Fortune 500 companies rely on Vapi because it is: Flexible: Plug in your APIs, your customer data, your models Scalable: Handle millions of calls with <500ms latency Secure: LLM guardrails, HIPAA, SOC-2 Helping enterprises over this challenge, Vapi, has raised $20 million in Series A funding, led by Bessemer Venture Partners with participation from Abstract Ventures, AI Grant, Y Combinator, Saga Ventures, and Michael Ovitz.

vapi.ai

Vapi

vapi.ai

HQUS

Team Size152

Open Jobs15

Total Funding-

Latest FundraiseUnknown

TL;DR

What they do: Developer-first voice AI platform that provides APIs, SDKs, and infrastructure to build and deploy human-like voice agents

Founded / HQ: 2023; San Francisco, CA

Tech / product focus: Low-latency audio, bring-your-own STT/LLM/TTS, automated testing, multilingual support

Compliance / scale: Enterprise security (SOC-2, HIPAA) and claims of sub-500ms latency for call handling

Funding signal: Series A announced Dec 11, 2024; lead investor Bessemer Venture Partners

Company Overview

Problem Domain

Voice AI agents for phone calls and voice interactions; infrastructure and developer tooling to build, test, and scale voice-based assistants

Founded

2023

Industry

Software Development

Tech Stack

APIs

SDKs

Bring-your-own models (STT/LLM/TTS)

Automated testing/tool-calling

Multilingual voice support

Funding Track Record

Seed

$2.1M

Reported seed investors include Kleiner Perkins and Abstract Ventures

Series A- 2024-12-11

Series A announced Dec 11, 2024

Investor Signal

“Investors include Bessemer Venture Partners (lead on Series A), Abstract Ventures, AI Grant, Y Combinator, Saga Ventures, Michael Ovitz, and Antenna Ventures”

Founders

What we do

TL;DR

Company Overview

Funding Track Record

Founders

What we do

Vapi

vapi.ai

Vapi

vapi.ai

HQUS

Team Size152

Open Jobs15

Total Funding-

Latest FundraiseUnknown

TL;DR

What they do: Developer-first voice AI platform that provides APIs, SDKs, and infrastructure to build and deploy human-like voice agents

Founded / HQ: 2023; San Francisco, CA

Tech / product focus: Low-latency audio, bring-your-own STT/LLM/TTS, automated testing, multilingual support

Compliance / scale: Enterprise security (SOC-2, HIPAA) and claims of sub-500ms latency for call handling

Funding signal: Series A announced Dec 11, 2024; lead investor Bessemer Venture Partners

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Company Overview

Problem Domain

Voice AI agents for phone calls and voice interactions; infrastructure and developer tooling to build, test, and scale voice-based assistants

Founded

2023

Industry

Software Development

Tech Stack

APIs

SDKs

Bring-your-own models (STT/LLM/TTS)

Automated testing/tool-calling

Multilingual voice support

Funding Track Record

Seed

$2.1M

Reported seed investors include Kleiner Perkins and Abstract Ventures

Series A- 2024-12-11

Series A announced Dec 11, 2024

Investor Signal

“Investors include Bessemer Venture Partners (lead on Series A), Abstract Ventures, AI Grant, Y Combinator, Saga Ventures, Michael Ovitz, and Antenna Ventures”

Founders

What we do

Join the Team

Software Engineering Manager

On-SiteSan Francisco, CA, US

On-Site • San Francisco, CA, US

Vapi (/ˈwɑːpi/):

We’re creating the shift to voice as humanity’s default interface.
We’re the most configurable platform for deploying voice agents.
We’re grown to 400,000 developers in 20 months, adding 2,000+ every day.
Try talking to Vapi now!

Why We’re Hiring This Role:

Teeming tracks opportunities at over 24,000 AI startups, then works with you to find (and land) the one you'll love.

Frontend Developer

Full-timeSan Francisco, US

Full-time • San Francisco, US

DevOps Engineer

ContractTel Aviv

Contract • Tel Aviv

Software Engineer

Part-timeLondon, GB

Part-time • London, GB

Frontend Developer

Part-timeRotterdam, NL

Part-time • Rotterdam, NL

Backend Developer

InternshipHamburg, DE

Internship • Hamburg, DE

Product Designer

ContractNew York, US

Contract • New York, US

30 Day:
Learn the Vapi platform, architecture, and codebase deeply enough to have real technical opinions.
Build relationships with your team. Understand each engineer's strengths, growth areas, motivations, and blockers.
Shadow the current workflow—standups, planning, code reviews, deploys. Identify what's working and what's slowing the team down.
Partner with product and design to understand the roadmap and priorities.
60 Day:
Own team health and delivery. Your team ships predictably, sustainably, and with quality.
Establish engineering rituals that create clarity: sprint planning, retros, 1:1s, blameless postmortems.
Start upgrading the team: identify gaps, open reqs, source candidates, raise the hiring bar.
Remove at least one systemic blocker that's been killing velocity (process, tech debt, unclear ownership).
90 Day:
Your team is humming: engineers are growing, shipping weekly, and fire drills are rare.
You've made at least one exceptional hire (or have strong candidates in pipeline).
Delivery is predictable. Product and leadership trust your team's estimates and commitments.
You're raising the engineering bar at Vapi—through code review culture, mentorship, and setting the example for what great engineering leadership looks like.