Top Tech Startups in California, US in 2027

Sedai optimizes everything. Kubernetes, serverless, storage, VMs, data workloads, GPUs, AI agents, tokens… You set your goals for reducing costs & improving performance. Sedai does the rest — using agentic AI to optimize your entire stack, in real time, all the time. Only our platform is patented to make changes safely, without ever breaking prod. That’s why customers like HP, GSK, and Palo Alto Networks trust Sedai to eliminate their engineering toil.

Pinterest is the world's first visual discovery engine. People use Pinterest to discover ideas to try in their daily lives. More than 300 million people around the world use Pinterest to dream, plan and prepare for things they want to do in life. We always start by asking: whose problem are we solving? Is it significant? Are we making Pinners lives better? If products don't work for people they don't work for us. The success of Pinterest depends on the ownership of every Pinployee. We all own Pinterest and work to achieve results that benefit everyone, not just specific teams or individuals.

SimilarWeb is the pioneer of digital market intelligence, and the standard for understanding the digital world. Our platform provides customers with granular insights about every website and mobile app enabling visibility into digital behavior and letting businesses see what is actually happening with their competitors, their industry and throughout the digital world. We have thousands of paying customers worldwide and millions of users using our free platform every month. Our customers are some of the largest global brands in the world and including Walmart, AirBnb, adidas, DHL and eBay. SimilarWeb raised over $112 million and has over 400 employees in 8 offices around the world in NY, SF, London, Tel Aviv, Tokyo, Kiev, Paris, San Paulo. With the insights and the data we provide businesses, agencies, marketers and analysts can benchmark performance against competitors, reveal competitors online strategy, discover new opportunities, identify emerging trends and understand consumer

We are a Digital Marketing Agency. We help clients with Digital Solutions like website development, social media marketing, SEO, Ecommerce Management, and Software Unicommerce.

Our mission is to automate how humans acquire and master skills. The first step in our journey is to build the "AI stack for education" to transform the credentialing and publishing industries with the best tools to build curricula, assessments, and apps at scale. After winning #1 (of 1,500) in the Vercel AI Accelerator we bootstrapped to millions in revenue and profitability while delivering over 200MM assessments via our AI platform. We also just closed our first strategic investment to scale faster and deploy our solution to millions of additional learners. We're a lean, talented team that rewards agency, curiosity, and shipping real products that directly impact the lives of millions. "Memorang has literally the best gen AI results I've seen applied to a real world problem." - Director of Trust and Safety, Google Deepmind

At Willow Innovations, Inc., our vision is to create a better world for moms. We are focused on identifying where moms need support in the motherhood journey, and building hardware- and software-based solutions around their needs. In 2014, we created the first-ever cord-free Willow™ Wearable Breast Pump, revolutionizing the industry. Fast forward to today, we are building a portfolio of physical and digital products to solve mom's most meaningful problems and improve their lives. Willow Innovations, Inc. sits at the unique and exciting intersection of HealthTech, FemTech, Consumer Goods, and Med device. Our potential for scale and impact is extraordinary—we’re just getting started. We’re looking for talented, passionate team players to help us deliver our mission and vision. If this sounds like you, we'd love to hear from you! Recent awards we’ve won include: - Great Place to Work Certified 2021–2022 - Omnis Awards, Outstanding Culture and Communication

Bykea is the largest homegrown ride-hailing, parcel delivery and payments platform in the country. Our App has over a million downloads. The solution is made by Pakistanis for Pakistanis and Bykea is the pioneer of the ‘Motorcycle Taxi’ concept in Pakistan. Bykea uses its product, data, and technology to improve everything from transportation to payments and logistics in the country. Working with our partners, passengers and customers we aim to unlock the true potential of our country by solving problems that hinder progress. If you share our vision of driving Pakistan forward please apply to join our team today

AMPAworks is a team of doctors, nurses, and engineers who have built an IoT system leveraging computer vision deep learning to monitor and re-order inventory in hospitals. We provide real-time data that saves the average hospital $10million annually by automating manual inventory enumeration tasks.

We launched Riot Games in 2006 to develop, publish, and support games made by players, for players. In 2009, we released our debut title, League of Legends. League has gone on to be the most-played PC game in the world and a key driver of the explosive growth of esports. Players are the foundation of our community and it’s for them that we continue to evolve the League experience both in and out of game. Founded by Brandon Beck and Marc Merrill, and currently under the leadership of CEO Nicolo Laurent, we're headquartered in Los Angeles, California, and have 2,500+ Rioters in 20+ offices worldwide.

Seso is the first end-to-end recruiting and workforce management platform for the agriculture industry. Our mission is to provide agricultural workers with meaningful, safe employment opportunities; provide security for the most critical aspects of America’s food production system; and reduce admin costs to employers through software. We are addressing American farmers’ biggest pain point - access to qualified labor - through a software-enabled labor solution that automates the H-2A visa, an uncapped visa for seasonal farmworkers. Today, Seso enables farms to digitally track applicants and onboard workers, streamlines the H-2A application process, ensures workers arrive at the farm on-time, and simplifies compliance. Long term, the Company is creating a comprehensive HR platform that helps agribusiness seamlessly integrate their efforts across recruitment, onboarding, payroll, and insurance while providing workers access to financial services for the first time. Similar to how Salesforce has tied together business systems around a common customer identity, Seso is solidifying all of a farm’s worker-facing systems around a common employee identity, making it the centerpiece of a unified schema that spans a farm’s back-office.