Founders Fund

Founders Fund is a San Francisco-based venture capital firm that backs science and technology companies across multiple stages, from seed to late-stage. It pursues transformative technologies and follows a founder-friendly investment approach that provides substantial support with minimal interference. The firm invests in ventures solving difficult problems across sectors such as aerospace and transportation, artificial intelligence, advanced computing, energy, healthcare, biotechnology, cybersecurity, fintech, consumer internet, software, robotics, and related technology fields. It has backed notable companies early, including SpaceX, Palantir, and Facebook, reflecting a history of partnering with ambitious founders to scale breakthrough technologies.

Delian Asparouhov

Partner

Jennifer Campbell

Partner

Bridget Harris

Associate

Joey Krug

Partner

Sean Liu

Partner

Jeffrey Lonsdale

Managing Director, Asia

John Luttig

Partner

Amin Mirzadegan

Partner

Scott Nolan

Partner

Luke Nosek

Managing Partner

Stephen Oskoui

Venture Partner

Ryan Petersen

Partner

Keith Rabois

Partner

Neil Ruthven

CFO

Napoleon Ta

Partner

Matias Van Thienen

Partner

Past deals in API

Icon

Venture Round in 2025
Icon is a technology company focused on developing innovative solutions for screen-based devices, particularly those integrated with Amazon's Alexa Voice Service. As a software-led hardware company, Icon specializes in creating smart mirrors and other smart home devices that incorporate voice capabilities. The company is recognized for its professional technology development team, which provides customized hardware and software solutions tailored to meet the certification requirements for Alexa integration. Icon's smart mirror, which features Alexa built-in, has received accolades, including recognition as a CES 2020 Innovation Awards honoree. In addition to its product offerings, Icon also provides industrial design services and supports a wide range of customized designs for original equipment manufacturers. The company is backed by notable investors and industry executives, enhancing its credibility and reach in the tech market.

Icon

Venture Round in 2025
Icon is a technology company focused on developing innovative solutions for screen-based devices, particularly those integrated with Amazon's Alexa Voice Service. As a software-led hardware company, Icon specializes in creating smart mirrors and other smart home devices that incorporate voice capabilities. The company is recognized for its professional technology development team, which provides customized hardware and software solutions tailored to meet the certification requirements for Alexa integration. Icon's smart mirror, which features Alexa built-in, has received accolades, including recognition as a CES 2020 Innovation Awards honoree. In addition to its product offerings, Icon also provides industrial design services and supports a wide range of customized designs for original equipment manufacturers. The company is backed by notable investors and industry executives, enhancing its credibility and reach in the tech market.

Helius

Series B in 2024
Helius is a developer-focused platform that accelerates the adoption of crypto-powered software. It provides a blockchain-based API platform that helps developers understand on-chain data and query transactions, while offering webhooks for automation and bots and RPC nodes to enable applications to interact with the blockchain. The platform supports building crypto applications that can parse closed-source smart contracts quickly, streamlining the development process for decentralized applications.

9amHealth

Series A in 2024
9amHealth is a healthcare service provider that aims to deliver comprehensive medical support for chronic conditions such as diabetes, hypertension, and hyperlipidemia. The company offers personalized care plans, prescription medication, at-home lab tests, and unlimited virtual visits, ensuring that patients have direct access to affordable and compassionate care. By redesigning all care elements into a single digital service, 9amHealth caters to the modern realities of patients' lives, making healthcare always available and convenient, even for those without insurance. Its focus on chronic conditions highlights its commitment to improving the health and well-being of customers in the United States.

Layer N

Seed Round in 2023
Layer N develops a hyper-performant rollup network designed to scale financial applications on Ethereum. It is composed of hyper-performant and customized modular rollups, with scalability, shared communication layers for unified liquidity, and supercharged APIs.

Stripe

Series I in 2023
Stripe develops APIs and tools for businesses to accept and manage online payments securely. It supports various international debit/credit cards, serving e-commerce platforms, SaaS companies, marketplaces, and non-profits globally.

Center

Seed Round in 2022
Center is an API for NFT metadata. Center is headquartered in Palo Alto, California and was founded in 2021.

9amHealth

Series A in 2022
9amHealth is a healthcare service provider that aims to deliver comprehensive medical support for chronic conditions such as diabetes, hypertension, and hyperlipidemia. The company offers personalized care plans, prescription medication, at-home lab tests, and unlimited virtual visits, ensuring that patients have direct access to affordable and compassionate care. By redesigning all care elements into a single digital service, 9amHealth caters to the modern realities of patients' lives, making healthcare always available and convenient, even for those without insurance. Its focus on chronic conditions highlights its commitment to improving the health and well-being of customers in the United States.

Hydra Host

Seed Round in 2022
Hydra operates a marketplace for computing resources, aggregating independent data centers into a single platform. It offers bare-metal GPU server rentals, clusters, procurement services, security consulting, and HPC expertise, enabling global deployment of high-performance workloads with redundancy and cost efficiency.

9amHealth

Seed Round in 2021
9amHealth is a healthcare service provider that aims to deliver comprehensive medical support for chronic conditions such as diabetes, hypertension, and hyperlipidemia. The company offers personalized care plans, prescription medication, at-home lab tests, and unlimited virtual visits, ensuring that patients have direct access to affordable and compassionate care. By redesigning all care elements into a single digital service, 9amHealth caters to the modern realities of patients' lives, making healthcare always available and convenient, even for those without insurance. Its focus on chronic conditions highlights its commitment to improving the health and well-being of customers in the United States.

Belvo

Series A in 2021
Belvo is an open finance API platform founded in 2019 and headquartered in Mexico City. The company enables financial innovators to connect their users' accounts to various applications, facilitating the access and interpretation of financial data in a straightforward and scalable manner. Belvo's platform allows developers to gain insights into user behavior and manage financial transactions efficiently, thus helping businesses to streamline operations and create new revenue opportunities through a unified open finance solution.

Cased

Seed Round in 2021
Cased offers a modern terminal for teams and a platform designed for efficient production work. Its platform handles search functionality, GeoIP lookups, personally identifiable information protection, and scaling.

Belvo

Series A in 2020
Belvo is an open finance API platform founded in 2019 and headquartered in Mexico City. The company enables financial innovators to connect their users' accounts to various applications, facilitating the access and interpretation of financial data in a straightforward and scalable manner. Belvo's platform allows developers to gain insights into user behavior and manage financial transactions efficiently, thus helping businesses to streamline operations and create new revenue opportunities through a unified open finance solution.

Teller

Seed Round in 2020
Teller is a London-based fintech API provider offering a unified, fully transactional banking API that lets developers connect users' bank accounts to apps and build financial products. The platform enables access to historical transactions, identity verification, cross-bank transfers, and payments through a single API, delivering bank-agnostic connectivity for developers and users. Established in 2019, Teller aims to simplify online banking and payments by providing reliable access to bank data and payments through one integration.

PayMongo

Seed Round in 2019
PayMongo Inc. is a payment processing platform based in Manila, Philippines, founded in 2019 by Francis Plaza, Luis Sia, Jaime Hing, and Edwin Lacierda. The company provides businesses with the tools to accept online payments through various channels, including credit cards, bank deposits, electronic wallets, and cash. Its platform features a user-friendly dashboard for real-time transaction monitoring, analytics tools to analyze customer purchasing patterns, and a streamlined checkout process to enhance the customer experience. Additionally, PayMongo offers shareable payment links that merchants can distribute via multiple communication channels, facilitating convenient payment collection. The company's mission is to empower businesses in the rapidly evolving digital economy by providing modern, accessible payment solutions.

Socotra

Series A in 2018
Founded in 2014, Socotra provides a cloud-based platform for the insurance sector. Its software supports policy administration, underwriting, claims management, billing, reporting, and other applications for property and casualty, and life insurance businesses worldwide.

HyperTrack

Series A in 2017
HyperTrack is a location technology company that provides a cloud platform for developers to build and operate location-based applications. Its solution delivers a plug-and-play location stack with APIs to track movement, meter distance and time, generate live ETAs, replay routes with event annotations, and trigger programmable alerts. The platform supports features such as finding nearest users for smart assignments, capturing location data in dashboards, and requesting tracking when a user is en route to a destination. It targets the on-demand economy, including food, transport, logistics, field service, sales, and gig-work applications, and its SDKs support iOS, Android, React Native, and Cordova. HyperTrack was founded in 2015 and is based in Foster City, California.

Hive

Series A in 2016
Founded in 2013, Hive develops web-based platforms that connect customers with businesses using deep learning toolkits and computer vision models. Its products include Hive Media for analytics, Hive Security for video analytics, Hive Auto for autonomous vehicles, and Hive Retail for retail operations. Headquartered in San Francisco, the company empowers developers with pre-trained AI models and turnkey software, serving billions of API requests monthly.

Stripe

Series C in 2014
Stripe develops APIs and tools for businesses to accept and manage online payments securely. It supports various international debit/credit cards, serving e-commerce platforms, SaaS companies, marketplaces, and non-profits globally.

Socotra

Seed Round in 2014
Founded in 2014, Socotra provides a cloud-based platform for the insurance sector. Its software supports policy administration, underwriting, claims management, billing, reporting, and other applications for property and casualty, and life insurance businesses worldwide.

BitPay

Series A in 2014
BitPay provides enterprise-grade bitcoin payment solutions for businesses, offering tools to accept digital currency payments and convert them to fiat. The platform includes a RESTful API and a bitcoin payment gateway, support for native payment protocol and signed payment requests, and a wallet solution named Copay that includes hardware security integration for private key generation and transaction signing. BitPay also offers BitPay Send, a payout service that enables organizations to disburse cryptocurrency to employees, affiliates, customers, vendors, and contractors. The company partners with payment processors to support merchants and has a focus on enabling merchants to accept Bitcoin and settle in traditional currencies. Founded in 2011, BitPay serves organizations across industries seeking blockchain-based payment acceptance and management.

Stripe

Series C in 2014
Stripe develops APIs and tools for businesses to accept and manage online payments securely. It supports various international debit/credit cards, serving e-commerce platforms, SaaS companies, marketplaces, and non-profits globally.

Zest AI

Series C in 2013
Zest AI, Inc. is a technology company based in Burbank, California, that specializes in artificial intelligence solutions for credit underwriting. Founded in 2009 and formerly known as ZestFinance, the company has developed a platform that utilizes advanced machine learning techniques to enhance credit decision-making processes. Zest AI's Model Management System allows lenders to analyze extensive credit data, increasing approval rates while mitigating the risks associated with credit decisions. The platform also emphasizes transparency and compliance, enabling lenders to understand and explain their data modeling results effectively. Through its innovative technology, Zest AI aims to make credit more accessible and fair, helping lenders improve their decision-making and ultimately provide better loan options to a wider array of consumers. The company has a strategic partnership with Microsoft, which supports its mission to expand the availability of credit.

BitPay

Seed Round in 2013
BitPay provides enterprise-grade bitcoin payment solutions for businesses, offering tools to accept digital currency payments and convert them to fiat. The platform includes a RESTful API and a bitcoin payment gateway, support for native payment protocol and signed payment requests, and a wallet solution named Copay that includes hardware security integration for private key generation and transaction signing. BitPay also offers BitPay Send, a payout service that enables organizations to disburse cryptocurrency to employees, affiliates, customers, vendors, and contractors. The company partners with payment processors to support merchants and has a focus on enabling merchants to accept Bitcoin and settle in traditional currencies. Founded in 2011, BitPay serves organizations across industries seeking blockchain-based payment acceptance and management.

CapLinked

Series A in 2012
CapLinked Inc., established in 2009 and headquartered in Redondo Beach, California, specializes in secure virtual data room solutions for complex business transactions. Its platform enables enterprises and external parties to collaborate on sensitive information, facilitating capital raises, asset sales/purchases, mergers & acquisitions, real estate deals, investor reporting, and other negotiations across various industries such as finance, private equity, venture capital, life sciences, natural resources, and legal markets. CapLinked offers three product lines catering to diverse client needs: enterprise applications for large firms with complex data requirements, self-serve accounts for smaller clients, and an API for embedding information security capabilities into clients' own applications.

theAudience

Series A in 2012
theAudience, Inc. is a multi-channel publisher specializing in social and digital content. Founded in 2011 and based in Los Angeles, the company offers a range of services including social consulting, influencer activation, content creation, and media buying. It also features the BackStage Publishing Platform, which streamlines the social publishing process through comprehensive workflow and analytics. theAudience enables brands to engage with popular culture by distributing content on a global scale, connecting leading entertainers, brands, and consumers. The company's innovative approach focuses on building meaningful relationships through compelling and shareable content across various social media platforms. As of 2015, theAudience operates as a subsidiary of Al Ahli Holding Group.

Stripe

Series B in 2012
Stripe develops APIs and tools for businesses to accept and manage online payments securely. It supports various international debit/credit cards, serving e-commerce platforms, SaaS companies, marketplaces, and non-profits globally.

140 Proof

Series B in 2011
140 Proof is a mobile-based software company that specializes in social advertising, utilizing individuals' social activity to tailor advertisements based on their interests. Founded in 2010 by Jon Elvekrog and John Manoogian III, along with Vanessa Naylon, Ryan Matsumura, and Andy Scott, the company has developed a patented technology known as the Blended Interest Graph. This technology allows 140 Proof to reach over 66 million unique social users by analyzing data from various social platforms to create detailed interest-based profiles, or "personas." The company offers a Relevance API that serves as a primary revenue stream for premium applications, providing targeted brand advertisements that are presented as concise messages or short videos. Unlike traditional ads on platforms like Facebook or Twitter, 140 Proof's approach combines insights from multiple social networks to deliver more relevant and personalized advertising experiences.

SendGrid

Series A in 2010
SendGrid is a cloud-based customer communication platform that helps businesses manage email-driven engagement. It offers an email API for developers to integrate email into applications, marketing tools to manage contact lists, create and test templates, and run campaigns with analytics to measure performance. The platform also provides expert services aimed at optimizing email delivery and deliverability. SendGrid handles large-scale email sending for a wide range of customers, from consumer internet services to enterprise brands, emphasizing reliable delivery and engagement. Founded in 2009 and based in Denver, Colorado, SendGrid grew to serve billions of emails monthly across diverse industries. In 2019, the company was acquired by Twilio, expanding Twilio’s communications platform with robust email capabilities.

Twilio

Series A in 2009
Twilio is a cloud-based communications company that empowers developers and businesses to build and integrate voice, video, messaging, and authentication into their applications via a robust set of APIs. By merging cloud computing, web services, and telecommunications, Twilio is transforming traditional telecom, enabling more contextual and personalized customer interactions. The company's Super Network ensures fast, cost-effective communication across the globe.

140 Proof

Series A in 2009
140 Proof is a mobile-based software company that specializes in social advertising, utilizing individuals' social activity to tailor advertisements based on their interests. Founded in 2010 by Jon Elvekrog and John Manoogian III, along with Vanessa Naylon, Ryan Matsumura, and Andy Scott, the company has developed a patented technology known as the Blended Interest Graph. This technology allows 140 Proof to reach over 66 million unique social users by analyzing data from various social platforms to create detailed interest-based profiles, or "personas." The company offers a Relevance API that serves as a primary revenue stream for premium applications, providing targeted brand advertisements that are presented as concise messages or short videos. Unlike traditional ads on platforms like Facebook or Twitter, 140 Proof's approach combines insights from multiple social networks to deliver more relevant and personalized advertising experiences.
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