Top Tech Startups in San Francisco, CA in 2027

Fluxx is a collaborative work platform, connecting everyone in your organization to the data that runs your business. No matter where your data lives, in custom databases, cloud-based software, or legacy systems, Fluxx provides a unified view into the data that your team relies on to make decisions. A revolutionary platform built and refined through real world enterprise deployments. Fluxx is the operational backbone for numerous Fortune 500 corporations, foundations and nonprofits.

Chalk is building machine learning infrastructure to answer the world’s hardest questions. Our platform is built to power credit, risk, insurance, medical, and recommendation decisions for the world’s most innovative companies. Answering these complex questions requires sourcing data from a wide range of providers and rapidly iterating on feature definitions. Chalk makes it easy for machine learning teams to build high-performance pipelines that deliver data to models at the right time. We orchestrate infrastructure and automatically track data lineage so developers can work confidently and focus on their unique products and insights. Chalk is based in San Francisco, California. Meet Our Founders Elliot (linkedin.com/in/elliotmarx) started his career at Affirm where he built the early risk and credit data infrastructure system (the inspiration for Chalk). He then started Haven Money (with Andy) which Credit Karma acquired to power its banking products. Andy (linkedin.com/in/amoreland) met Elliot at Stanford admit weekend – Elliot was his room host and they’ve been best friends ever since. After school, Andy worked at Palantir on large government data infrastructure projects. He then founded Haven Money (with Elliot) which now powers Credit Karma Money. Marc (linkedin.com/in/marcff) spent many years at Google where he helped to launch the first version of Google Wallet. He went on to start Index which Stripe acquired as its in-store payment solution – it’s now called Stripe Terminal.

Orb is developer-first billing infrastructure built to help companies succeed with usage-based pricing. We handle all the complexity of turning millions of usage data points into a simple invoice, so companies don’t have to staff whole engineering teams on billing. We power monetization for the building blocks of the internet.

Amplify is the modern communications platform built for regulated industries. We bring together HIPAA-compliant fax, eSignature, SMS, calling, and video in one secure, easy-to-use platform — helping healthcare teams and service providers streamline their workflows, reduce compliance risks, and provide smarter care. Whether you’re sending referrals, managing intake, closing authorizations, or following up with labs and pharmacies, Amplify connects the tools you use most — without forcing your team to switch platforms or compromise security. Trusted by thousands of providers, Amplify supports direct communication and document exchange, so nothing falls through the cracks.

Pomelo Care is the national leader in evidence-based healthcare for women and children. We deliver personalized, high-quality clinical interventions from reproductive care and pregnancy, infant care and pediatrics, to hormonal health through perimenopause and menopause, with long-term preventive care and condition management. Our model delivers 24/7 multispecialty care to address the medical, behavioral, and social factors that most significantly impact outcomes for women and children. We partner with payers, employers, and providers to expand access to quality healthcare across the system. To search career opportunities or to learn more, head to pomelocare.com.

At Rattle, we want Sales and Customer Success teams to fall in love with Salesforce again. In a world where we are spending more & more time on messaging tools like Slack, we believe users should be able to access & manage Salesforce from an interface where they already live! This was the genesis behind starting Rattle and we are proud to say that our customers wholeheartedly agree. Industry leaders like Rippling, Terminus, LogDNA, Olive, Litmus, and many more use Rattle daily & call us an integral part of their tech stack. Salesforce & Slack are only the beginning though. Our mission is to bring all enterprise software to messaging platforms and enable a delightful user experience & facilitate collaboration. Started by 3 co-founders (Apoorva, Milan & Sahil) who have faced this problem themselves and left their amazing jobs in San Francisco to build Rattle. We are backed by the world’s top investors - Lightspeed & Sequoia and highly respected angels like Amy Chang, Jake Seid, Ellen Levy, Jaleh Rezaei & Chargebee founders (Krish & Raman). Now we are looking to build out our core team that will play a key role in getting Rattle in the hands of all enterprises in the world!

We empower GTM leaders to build a consistent brand across every customer touchpoint. Our automated language generation and writing suggestions make it possible for teams to accelerate content, align brand, and empower more writers across all types of content and communications. Enterprise-class and simple to roll out, Writer is deployed widely at leading brands like Twitter, Intuit, UiPath, UnitedHealthcare, Accenture, and Spotify.

Wheelhouse is a FinTech platform for flex rentals. More specifically, Wheelhouse is a revenue & financial intelligence platform that empowers the next generation of hospitality & “flex living” operators. (Think “Shopify meets Hospitality”) Today, thousands of businesses manage their revenue, sales & analytics on top of Wheelhouse’s growing pricing & financial intelligence platform. At our foundation is our best-in-class machine learning price recommendation engine, which focuses on determining the correct nightly price for the unique properties that sell in the short-term & flex rental space. Our pricing engine provably drives revenue performance 20%+, and is combined with data tools (market & competitive intelligence tools) that help professional teams manage inventory anywhere in the world. In 2021, our platform was named “Innovation of the Year” at the Data & Revenue Management conference - as voted on by one of our key customer targets. We’re a well-funded, collaborative & productive team that enjoys shipping beloved products, on time, while having fun, and partnering deeply with our customers to help drive their business success. Our team is best described as transparent & collaborative, and we strive to set our teammates up for success - both professionally & personally. Certainly, there is a lot more to share, and we’d be eager to say hello & learn more about you! To learn more about our platform: usewheelhouse.com To learn more about our data science: usewheelhouse.com/blog/wheelhouse-pricing-engine

OneShop is building an operating system for reselling online, designed for small sellers. For $45/mo we make it easier to run your reselling business, whether you’re selling on one site or half a dozen. We do this by arming you with tools for your reselling workflow that simplify, standardize, and automate the seller experience across sites and off-platform.

Every business that sells something a person has to install, use, or repair already has the video, cannot search it, and has customers asking about it anyway. We built the thing that finds the answer. Businesses pay us to turn how-to video into an expert on their own channels that answers their customers in their own voice.