Workers IO
Hiring
What they do:
Simulation Environments for Verifying Mission Critical Software
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HQ: San Francisco, CA, United States
Top Cloud Infrastructure Startups in the United States
This list has 388 startups and was last updated on Oct 15, 2026. 107 of them are hiring right now. Biggest hubs: San Francisco (302), New York (44), and Los Angeles (8). Largest teams: Fivetran, PagerDuty, and Firebase. Latest round: Supabase raised $150M (Oct 2, 2026).
388 startupsPage 5 of 11
What they do:
World's fastest and most optimal route optimization engine
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HQ: Ontario, CA, United States
What they do:
Frontier models and agents you can learn from, audit, and steer.
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HQ: San Francisco, CA, United States
What they do:
Autonomously scaling environments
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HQ: San Francisco, CA, United States
What they do:
Expert STEM reasoning data for frontier AI labs.
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HQ: San Francisco, CA, United States
What they do:
Your agents should never make the same mistake twice.
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HQ: San Francisco, CA, United States
Limrun
Hiring
What they do:
Extend cloud sandboxes with iOS, Android and more
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HQ: San Francisco, CA, United States
What they do:
The agent-native serverless cloud
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HQ: San Francisco, CA, United States
What they do:
We give AI agents realtime web context via API
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HQ: San Francisco, CA, United States
What they do:
Open source agent generation framework
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HQ: San Francisco, CA, United States
What they do:
Building the next generation of visual media
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HQ: New York, NY, United States
What they do:
Account abstraction wallets as a service
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HQ: Los Angeles, CA, United States
What they do:
Unified Hardware Control and Data Processing Software
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HQ: Denver, CO, United States
What they do:
The most powerful sandboxes for AI Agents
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HQ: San Francisco, CA, United States
What they do:
Encrypted AI with verifiable privacy
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HQ: San Francisco, CA, United States
Relling
Hiring
What they do:
deploying the first billion robots for manufacturing
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HQ: San Francisco, CA, United States
YC S25Early stage
What they do:
API for unlimited, durable, real-time streams
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HQ: San Francisco, CA, United States
AgentPhone
Hiring
What they do:
Phone Numbers for AI Agents
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HQ: San Francisco, CA, United States
YC X26Early stage
What they do:
Earned intelligence for every company
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HQ: San Francisco, CA, United States
Operon
Hiring
What they do:
Agentic data layer for manufacturing & process industries.
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HQ: San Francisco, CA, United States
YC S26Early stage
What they do:
Context layer for enterprise AI surveying employees with voice agents
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HQ: San Francisco, CA, United States
What they do:
Full-service web, mobile, & cloud studio providing professional…
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HQ: Austin, TX, United States
What they do:
Serverless Infrastructure Platform for AI
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HQ: New York, NY, United States
What they do:
Internal developer platform for Terraform, OpenTofu and Helm
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HQ: Los Angeles, CA, United States
What they do:
Palantir for Web3
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HQ: New York, NY, United States
What they do:
Build and host internal tools
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HQ: Ashburn, VA, United States
What they do:
We build floating solar data centers
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HQ: San Francisco, CA, United States
What they do:
We sell GPUs.
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HQ: San Francisco, CA, United States
What they do:
The cheapest, fastest inference cloud
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HQ: San Francisco, CA, United States
What they do:
The AIOps Agent for ML Teams
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HQ: Seattle, WA, United States
What they do:
The World's Largest Video Library
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HQ: San Francisco, CA, United States
What they do:
AI that turns any camera to an autonomous worker with real-time vision
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HQ: San Francisco, CA, United States
What they do:
Company Brain.
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HQ: San Francisco, CA, United States
What they do:
OpenRouter for Voice AI: one API, every call on the best speech model
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HQ: San Francisco, CA, United States
What they do:
Unmanned cargo airplanes
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HQ: Los Angeles, CA, United States
What they do:
Real-time cloud inference for robotics.
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HQ: San Francisco, CA, United States