Top Tech Startups in California, US in 2027

TELUS International AI Data Solutions Creating and enhancing the world's data to enable better AI via human intelligence We help companies test and improve machine learning models via our global AI Community of 1 million+ annotators and linguists. Our proprietary Ground Truth AI training platform handles all data types across 500+ languages and dialects. Our AI Data Solutions vastly enhance AI systems across a range of applications from advanced smart products, to better search results, to expanded speech recognition, to more human-like bot interactions and so much more. TELUS International values people diversity and grants equal opportunity regardless of age, civil status, disability, gender, nationality, race, religion and political beliefs, sex or sexual orientation.

OpusClip is the No.1 AI-first video editing tool built for authenticity with no editing skills required. Just 1 click to turn long-form content into viral-ready short clips for social media. We envision a world where everyone can authentically share their story through video, with no expertise needed. Within just 2 years of our launch, over 10 million creators and businesses have used OpusClip to enhance their social presence. We have raised $50 million in total funding and are fortunate to have some of the most supportive investors, including SoftBank Vision Fund, DCM Ventures, Millennium New Horizons, Fellows Fund, AI Grant, Jason Lemkin (SaaStr), Samsung Next, GTMfund, Alumni Ventures, and many more. Headquartered in Palo Alto, we are a team of 90 passionate and experienced AI enthusiasts and video experts, driven by our core values: ⚡ Be a Champion Team ⚡ Prioritize Ruthlessly ⚡ Ship Fast, Quality Follows ⚡ Obsess Over Customers Be a part of this exciting journey with us!

Aptos is building a Layer 1 blockchain designed with an emphasis on absolute safety, extensible scalability, and credible neutrality — values that we know firsthand and viscerally understand. Now, on the fourth iteration of the consensus protocol, we are confident that Aptos is capable of bringing affordability, decentralization, and speed to the daily lives of billions of internet users. It is the lowest latency, optimistically-responsive BFT protocol available, and it features a robust, on-chain reputation system and novel methods for parallel execution — a key enabler of speed at scale. We will rapidly deploy many key innovations in performance, functionality and improvements to the overall user experience and leverage our ability to do major upgrades seamlessly in the process.

At Housecall Pro, we're focused on making the everyday lives of home services professionals better by helping them to incorporate mobile software into their workflow. The home services industry remains vast ($700b+) but untouched by technology and unencumbered by a dominant competitor. The 3M+ mobile businesses in home services are facing dramatic change as the world shifts from offline to online. Along this journey, we are quickly becoming the backbone operating system for service labor across the US and Canada. We’ve rocketed from MVP to the #1 ranked SaaS software platform in just over 2 years.

At Toi Labs, we’re pioneering the next frontier of personal health monitoring—starting in the most unexpected place: the bathroom. By transforming the toilet into a passive health companion, we deliver real-time, actionable insights into gut health and more—without requiring users to change their behavior. Our platform enables early detection and preventive care right from the home. Recognized by TIME as a Best Invention of the Year and backed by TOTO, Sloan and the NIH, we’re combining elegant design, embedded technology, and data science to redefine how—and where—healthcare happens.

Upbound is the industry’s first platform for building internal cloud platforms. Designed around control planes, Upbound offers a new methodology for building an internal cloud platform, purpose-built for your organization. Customers can quickly build, deploy, manage, secure, and use their platforms all from a single point of control.

Localcoin is a financial technology company that operates the largest cryptocurrency ATM network in Canada. Our network allows users to buy and sell Bitcoin, Litecoin, and Ethereum at over 400 retail locations across North America in more than 9 provinces and 3 states. Founded in 2017, Localcoin empowers consumers to join the cryptoeconomy by offering a simple cryptocurrency buying/selling experience to over 40,000 customers. Our partners include independent retailers and franchises such as Hasty Market and Gateway Newstands. We are a profitable cryptocurrency startup and we are growing at an exponential rate with over 50 new locations opened monthly. Localcoin’s mission is to bring cryptocurrency to your community, one ATM at a time. Learn more at localcoinatm.com.

TrueFoundry is an Enterprise Platform as a service that enables companies to build, ship and govern Agentic AI applications securely, at scale and with reliability through its AI Gateway and Agentic Deployment platform. Its AI Gateway encompasses a combination of - LLM Gateway, MCP Gateway and Agent Gateway - enabling enterprises to manage, observe, and govern access to all components of a Gen AI Application from a single control plane while ensuring proper FinOps controls. Its Agentic Deployment platform enables organizations to deploy models on GPUs using best practices, run and scale AI agents, and host MCP servers - all within the same Kubernetes-native platform. It supports on-premise, multi-cloud or Hybrid installation for both the AI Gateway and deployment environments, offers data residency and ensures enterprise-grade compliance with SOC 2, HIPAA, EU AI Act and ITAR standards. Leading Fortune 1000 companies like Resmed, Siemens Healthineers, Automation Anywhere, Zscaler, Nvidia and others trust TrueFoundry to accelerate innovation and deliver AI at scale, with 10Bn + requests per month processed via its AI Gateway and more than 1000+ clusters managed by its Agentic deployment platform. TrueFoundry’s vision is to become the Central control plane for running Agentic AI at scale within enterprises and empowering it with intelligence so that the multi-agent systems become a self-sustaining ecosystem driving unparalleled speed and innovation for businesses. To learn more about TrueFoundry, visit truefoundry.com.

nOps is an automated cloud optimization platform that makes it easy to allocate and manage cloud usage, commitments, and spend. Managing $4B+ in annual cloud spend, nOps helps companies of every size, from fast-growing startups to global enterprises, reclaim millions in wasted cloud costs. Cloud waste is one of the fastest growing challenges in tech. nOps tackles it by leveraging proprietary ML modeling and AI-powered automation to guide organizations toward the right commitment strategy. The platform eliminates manual provisioning entirely, delivering maximum cost savings without sacrificing reliability, so teams can focus on building and innovating. Trusted by innovative brands around the world, nOps has been recognized as a G2 Top 50 Security Product and G2 Leader for Winter 2025, is an AWS Advanced Technology Partner, and a proud FinOps Foundation Member with our CEO serving on the FinOps Foundation Governing Board.

At Teleskope, we believe that data security and privacy is shifting left, and should be automated and enforced from within at the earliest stages. We are building a developer-first data security platform that provides companies with complete and actionable visibility into their continuously growing data.