Staff Infrastructure Engineer

Sorry, this job was removed at 12:35 a.m. (CST) on Saturday, Nov 29, 2025
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San Francisco, CA
In-Office
150K-300K Annually
Artificial Intelligence • Software
The Role
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:
  • We do millions of calls every day, with thousands concurrent.

  • In every call, we get a new audio packet every 20ms and respond in <1s.

  • We are now scaling this to 100s of millions of calls.

  • It's freakin hard and a lot of fun.

What You’ll Do:
  • 30 Day: You’ll ramp on our multi-cluster, multi-cloud infrastructure.

  • 60 Day: You’ll deliver a new service like Anycast Global Router.

  • 90 Day: You’ll own a domain like GPU inference clusters.

Who You Are:
  • You’ve seen Series B to F.

  • You’ve scaled massive systems that are resilient and performant.

  • Bonus: You’ve built your own startup.

Why Vapi:
  • Generational impact: Build human interface for every business.

  • Ownership culture: 90% of company is previous founders.

  • Kind team: The founders Jordan and Nikhil are Canadians.

  • Tier-1 Investors: YC, KP seed, Bessemer series A.

What We Offer:
  • Real stake: We offer competitive salary and excellent equity ownership.

  • Comprehensive health coverage: medical, dental, and vision plans.

  • Team love: We love hanging out and do quarterly offsites.

  • Flexible time off: take what you need.

  • More: catered meals and transportation, gym & coaching stipends!

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The Company
HQ: San Francisco, California
48 Employees
Year Founded: 2021

What We Do

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.

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