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Vapi Tech Stack

Voice AI platform for enterprises handling millions of calls

Software Development San Francisco, California 51–200 employees Founded 2021 Privately Held

Vapi provides infrastructure for deploying voice agents at scale, with a tech stack spanning Twilio, Vonage, WebRTC, and SIP alongside CRM and sales tools (Salesforce, Outreach, Salesloft, HubSpot). The company is actively adopting MCP and WireGuard while managing a hiring mix heavily weighted toward senior engineers and sales roles — a pattern consistent with scaling enterprise deployments and handling the high feature-request volume documented in their pain-point list.

Tech Stack 20 technologies

Core StackGitHub Zendesk Intercom Twilio Salesforce Salesloft HubSpot Ashby Discord X WhatsApp Jira Service Management Vonage SIP WebRTC Outreach Apollo
AdoptingMCP WireGuard

What Vapi Is Building

Challenges

  • Scaling enterprise deployments
  • High feature request volume
  • Pipeline creation
  • Global sdr organization scaling
  • Removing systemic blockers
  • Scaling engineering org
  • Expanding east coast presence
  • Scaling to 100s of millions of calls
  • Adopting new features
  • Expanding usage

Active Projects

  • Build product for future deployments
  • Design pilots with product and engineering leaders
  • Deploy large ent onsite
  • Mcp product line
  • Pilot design
  • Solution architecture
  • Prototype voice agent solutions
  • Discover additional use-cases
  • Whatsapp voice agents
  • Auto rl loop

Hiring Activity

Steady35 roles · 15 in 30d

Department

Engineering
12
Sales
11
HR
3
Ops
2
Support
2
Marketing
1
Product
1
Security
1

Seniority

Senior
19
Mid
5
Director
3
Manager
3
Lead
2
Junior
1
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About Vapi

Vapi builds an API platform for enterprises to deploy conversational voice agents and automate phone operations. The product integrates with existing telephony infrastructure (Twilio, Vonage, SIP, WebRTC) and connects to customer data systems (Salesforce, HubSpot, Zendesk, Intercom). Customers include startups and Fortune 500 companies. Active projects include WhatsApp voice agents, large enterprise onsite deployments, solution architecture for pilots, and an auto reinforcement-learning loop. The company is based in San Francisco and was founded in 2021.

HeadquartersSan Francisco, California
Company Size51–200 employees
Founded2021
Hiring MarketsUnited States, Netherlands

Frequently Asked Questions

What tech stack does Vapi use?

Vapi uses Twilio, Vonage, WebRTC, and SIP for telephony; Salesforce, HubSpot, and Outreach for CRM and sales; and Discord, GitHub, Jira, and Zendesk for internal operations. Recently adopting MCP and WireGuard.

Where is Vapi headquartered?

Vapi is based in San Francisco, California and was founded in 2021. Currently hiring in the United States and Netherlands.

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