Optifye.ai
Hiring
What they do:
AI performance monitoring for factory workers
Quick facts:
Top Hard Tech Startups
This list has 143 startups and was last updated on Oct 15, 2026. 42 of them are hiring right now. Biggest hubs: San Francisco (70), Los Angeles (9), and Boston (8). Largest teams: Helion Energy, SRTX, and SiPhox Health. Latest round: CircuitHub raised $25.5M (May 13, 2026).
143 startupsPage 2 of 4
Wardstone
Hiring
What they do:
The Modular Interceptor Platform
Quick facts:
HQ: Los Angeles, CA, United States
Piris Labs
Hiring
What they do:
The Networking Layer of AI
Quick facts:
HQ: San Francisco, CA, United States
Yummy Future
Hiring
What they do:
We build robotic workforces for the food & beverage industry.
Quick facts:
HQ: Champaign, IL, United States
Yondu
Hiring
What they do:
Robots to Automate Fulfillment
Quick facts:
HQ: Los Angeles, CA, United States
Innate
Hiring
What they do:
Personal AI Robots
Quick facts:
HQ: San Francisco, CA, United States
Cascade Space
Hiring
What they do:
Commercial alternative to the Deep Space Network
Quick facts:
HQ: San Francisco, CA, United States
Maritime Fusion
Hiring
What they do:
Fusion reactors for ships
Quick facts:
HQ: San Francisco, CA, United States
What they do:
We make satellites to image everywhere on Earth, every 15 minutes
Quick facts:
HQ: Glasgow, United Kingdom
What they do:
Desktop DNA Printer. The Nespresso Machine for DNA.
Quick facts:
HQ: Graz, Austria
Photonium
Hiring
What they do:
AI-Powered Optical Consulting & Software
Quick facts:
HQ: New York, NY, United States
Edgerun
Hiring
What they do:
Military exoskeletons
Quick facts:
HQ: San Francisco, CA, United States
What they do:
IndustrialNext builds the AI brain for manufacturing –…
Quick facts:
HQ: San Francisco, CA, United States
Conductor Quantum
Hiring
What they do:
AI that operates quantum computers for scientific discovery
Quick facts:
HQ: San Francisco, CA, United States
Darwin
Hiring
What they do:
Robots to build civilization
Quick facts:
HQ: San Francisco, CA, United States
Dispatch
Hiring
What they do:
Satellites for Manufacturing in Space
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Automation Foundation Models For Tiny Devices
Quick facts:
HQ: San Francisco, CA, United States
Lightberry
Hiring
What they do:
Robots with soul
Quick facts:
HQ: San Francisco, CA, United States
Visibl Semiconductors
Hiring
What they do:
Custom silicon for power electronics
Quick facts:
HQ: San Francisco, CA, United States
Nine Fives
Hiring
What they do:
RF test equipment for next-gen spacecraft, drones, and cellphones
Quick facts:
HQ: San Francisco, CA, United States
Arlo Industries
Hiring
What they do:
Track drones and missiles without radars - Accurate, Passive, Scalable
Quick facts:
HQ: New York, NY, United States
Neuromorphic
Hiring
What they do:
Building robots to automate wetlabs
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Autonomous construction on Earth and beyond
Quick facts:
HQ: San Francisco, CA, United States
83 Sciences
Hiring
What they do:
AI-native materials discovery powered by unpublished experimental data
Quick facts:
HQ: San Francisco, CA, United States
Vernius Systems, Inc.
Hiring
What they do:
Mass-deployable radars for air defense
Quick facts:
HQ: San Francisco, CA, United States
The Subvocal Company
Hiring
What they do:
Talk to your computer without talking
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Flexible printed OLED displays.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Empowering anyone to build cellular network
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Programmable biology company for psychoactive effect design
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI for product formulation
Quick facts:
HQ: San Francisco, CA, United States
Zettascale Computing
Hiring
What they do:
Chips for frontier AI
Quick facts:
HQ: San Francisco, CA, United States
Synapse Semiconductor
Hiring
What they do:
New semiconductors that merge compute and vision
Quick facts:
HQ: Durham, NC, United States
What they do:
Humanoids to restock retail shelves & pick orders
Quick facts:
HQ: Switzerland
What they do:
Repellent coatings without PFAS
Quick facts:
HQ: State College, PA, United States
What they do:
Detect cyber attacks on critical physical infrastructure
Quick facts:
What they do:
We make robots that move boxes in warehouses
Quick facts:
HQ: San Francisco, CA, United States