Vapi Tech Stack

Voice AI platform for handling business calls at scale

Software Development San Francisco, California 51–200 employees Founded 2023 Privately Held

Vapi operates a voice agent platform designed to handle inbound and outbound calls for enterprises and developers. The stack reveals a dual-track go-to-market: Twilio, Vonage, and Genesys for telecom integration, paired with Salesforce, HubSpot, Outreach, and Salesloft for sales motion. The hiring composition—13 sales roles against 5 engineering—and active projects around post-sales playbooks, NRR engines, and mid-market deal execution show a company scaling revenue operations and enterprise land-and-expand after establishing product-market fit at scale.

Tech Stack 32 technologies

Core StackSalesforce HubSpot TypeScript React Node.js Cursor Python JavaScript Stripe Twilio Ashby Gong Playwright Cypress Selenium Next.js Slack Zendesk Intercom Salesloft webhooks Vonage Genesys Outreach WebRTC Discord X WhatsApp Jira Service Management Apollo

What Vapi Is Building

◆Challenges

Complex enterprise deployments
Post-sales engagement scaling
Retention and expansion
Expanding east coast presence
Building accounting function from scratch
Outsourced accounting function
Scaling to meet demand
Reducing technical friction
Enterprise prospect engagement
Deal execution

▲Active Projects

Design pilots with product and engineering leaders
Post-sales playbooks
Post-sales engagement model
Pilot design
Solution architecture
Build nrr engine
Proactive health monitoring
Anycast global router
Run mid-market deals
Auto rl loop

Hiring Activity

Accelerating30 roles · 15 in 30d

Department

Sales

Engineering

Marketing

Product

Finance

Support

Seniority

Senior

Director

Junior

Lead

Manager

Mid

Principal

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About Vapi

Vapi provides a platform for deploying voice agents that handle complex business conversations without traditional IVR friction. The product serves indie builders and enterprise customers, with reported scale of over 1 billion calls powered on the platform. The company is headquartered in San Francisco and founded in 2023. Current operational focus centers on post-sales engagement models, proactive health monitoring, solution architecture for enterprise deployments, and geographic expansion—particularly building East Coast presence. The founding of an accounting function and adoption of Ashby for talent infrastructure suggest infrastructure-building typical of a Series A–B stage company.

HeadquartersSan Francisco, California

Company Size51–200 employees

Founded2023

Hiring MarketsUnited States, Netherlands

Frequently Asked Questions

What telecom providers does Vapi integrate with?

Vapi integrates with Twilio, Vonage, and Genesys, providing flexibility across major VoIP and contact-center platforms for call routing and management.

What CRM and sales tools does Vapi use internally?

Vapi uses Salesforce, HubSpot, Outreach, Salesloft, Gong, and Apollo for CRM, sales engagement, and revenue operations—indicating a sales-led operational model.

How this profile is built

Vapi's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.