Top Tech Startups in California, US in 2026

We are a growing stealth-mode hedge fund focused on systematic and data-driven investment strategies.

We eliminate tens of thousands in upfront data expenses, while giving you the instant flexibility to pick up real-time full exchange feeds or terabytes of historical data when you need it. Whether you're a Fortune 500 bank or a single-person startup, we scale with your budget and needs to deliver the same cutting edge performance and data integrity. For more info, visit databento.com

We're building the Android of self-driving cars — think Tesla Autopilot for the top selling cars in America, like Hondas and Toyotas. The comma fleet is 20k users who've driven over 200M miles. We build openpilot. We build the hardware openpilot runs on. Learn more at comma.ai, check out our GitHub (github.com/commaai/openpilot), or say hello on Discord at discord.comma.ai. Looking for a job? Try our challenges at comma.ai/jobs.

Pyka’s goal is to provide society with a new form of safe, clean, and cost-effective transportation enabled by autonomous electric aviation. To get there, we’re taking a different approach than most. We're applying our technologies to every industry where autonomous electric aircraft can be useful, starting with the highest value and most dangerous jobs. In doing so, we're building game-changing products manufactured at scale, while perfecting the safety, reliability, and capabilities of our autonomy engine and electric propulsion systems. We design, develop and manufacture an ecosystem of technologies including proprietary flight control software, avionics, high power density motors, motor controllers, batteries, and custom carbon-fiber composite airframes. Today, we supply autonomous electric aircraft for cargo transport and crop protection to real-world customers across four separate continents and have secured industry-first regulatory approvals from the FAA. Both vehicles are highly economical to operate, easy to deploy, and significantly reduce C02 emissions in their respective industries. What you work on at Pyka makes people’s lives better now and brings the future of electric aviation one step closer each day. We foster a welcoming community within our company that promotes experimentation, asking questions, making simple solutions to complex problems, and expressing different views and opinions. We are a transparent company both internally and externally and do not believe in operating in “stealth mode.” Lastly, we don’t work 60 hour weeks, and don’t expect you to either. In this role you will have a great deal of responsibility, earn a competitive salary and benefits,  and contribute to the development of groundbreaking technology.

Glydways develops personal rapid transit systems featuring self-driving Glydcars that travel on dedicated guideways. The system provides direct journeys intended to bypass traffic, offering a congestion-free mode of mobility for riders. Glydways focuses on delivering a financially sustainable transit solution with comparatively lower building and operating costs.

Our mission is to make AI trustworthy for all enterprises. We’re building a new kind of ML platform to help enterprises accelerate their adoption of AI by building responsible systems with trust, visibility, and insights built-in.

A better browser

Opal Security is intelligent access management that empowers enterprises to move fast while staying secure. Our mission is to bring clarity, control, and confidence to complex enterprise environments, helping teams govern access without slowing down innovation.

Software is the product at Kanmon and we are proud of what have delivered to our customers. We are building B2B fintech infrastructure that enables software and marketplace companies to offer lending products to their business customers.

At Sprinter Health, we’re tackling one of healthcare’s biggest challenges: reaching patients who have fallen through the cracks of our healthcare system. With a boots-on-the-ground clinician network and the tech platform to solve this problem at scale, we bring critical preventive care to folks who are otherwise not getting it, whether due to disability, socioeconomics, transportation insecurity, or simply not getting around to it. We believe that access to healthcare shouldn’t be so hard, and by making it easier for folks to get the diagnostics and preventive care they need, we can halt the growing tide of disease and healthcare costs in America. Since launching in 2021, we're now live across 15+ states, covering over 60% of the US population and partnering with 6 of the 10 largest U.S. health plans. We've served >60k patients in-home from ages 3 to 103. And with 5x revenue growth in 2023 and 6x growth in 2024, things are only accelerating. Our team of technologists, clinicians, and operators bring decades of experience from Google, Meta, Amazon, Epic, Aetna, and Oak St. Health. And with over $125M raised from top VC investors, including a16z, General Catalyst, GV, and Accel, we have everything we need to transform healthcare. Jobs at Sprinter Health We're looking for strong engineers and product managers at all levels who want to make an impact today. We want to change lives—save lives—and we could use all the help we can get. If you want to build things, we want to talk to you. If you want to grow faster than you ever could at a big company, we want to talk to you. If you want to make a difference, we want to talk to you.