Pioneer Fund

Pioneer Fund is a San Francisco-based venture capital firm founded in 2017 that makes early-stage investments across a wide range of sectors, including consumer products and services, financial services, information technology, advanced manufacturing, blockchain, life sciences, gaming, artificial intelligence and machine learning, construction technology, education technology, fintech, agriculture technology, advertising technology, augmented reality, autonomous vehicles, legal technology, oncology, pet technology, real estate technology, ride-hailing, SaaS and supply chain technology. The firm benefits from a network of more than 420 Y Combinator alumni, enabling it to identify and support YC-backed startups.

Lior Abraham

Venture Partner

Wayne Anderson

Venture Partner

Jon Armstrong

Venture Partner

Tamara Bain

Venture Partner

Kate Bambino

Venture Partner

Lena Belogolova

Venture Partner

Bryan Beshore

Venture Partner

Rajiv Bhat

Venture Partner

Amitav Chakravartty

Venture Partner

Bryant Chou

Venture Partner

Andrew DSouza

Venture Partner

Michael Dilworth

CFO and Partner

Kshitij Dixit

Venture Partner

Cobi Druxerman

Venture Partner

Luqui Díaz

Venture Partner

Steli Efti

Venture Partner

James Fong

Venture Partner

Taro Fukuyama

Venture Partner

Jarret Glasscock

Venture Partner

Jason Gray

Managing Partner

Alanna Gregory

Venture Partner

Ranvir Gujral

Venture Partner

Joshua Halickman

Venture Partner

Taylor Halliday

Venture Partner

Michael Heinrich

Venture Partner

Nancy Hua

Venture Partner

Albert Huang MD

Venture Partner

Faiz Jalia

Analyst

Steven Johnston

Venture Partner

Beth Kolko

Venture Partner

Jackie Kong

Venture Partner

Kwin Hultman Kramer

Venture Partner

Greg Kress

Venture Partner

Ashwin Kumar

Venture Partner

Tiffany Kuo

Venture Partner

Vanessa Lee

Venture Partner

Ilya Lichtenstein

Venture Partner

Evan Lodge

Venture Partner

Parthi Loganathan

Venture Partner

Richard Ma

Venture Partner

Ritik Malhotra

Venture Partner

Rohit Malhotra

Venture Partner

Matthew McDonald

Venture Partner

Dave Messina

General Partner

Will Mitchell

Venture Partner

Francesco Mosconi

Venture Partner

Anthony Nemitz

Venture Partner

Victor Ng

Venture Partner

Peter Nixey

Venture Partner

Eric Norman

Visiting General Partner

Will Olsen

Venture Partner

Jon Parker

Venture Partner

Amit Patel

Venture Partner

Puja Patel

Venture Partner

David Rabie

Venture Partner

Saad Rizvi

Venture Partner

Juan Salcedo

Venture Partner

Matt Schiller

Venture Partner

William Schlacks

Venture Partner

Robert Schultz

Venture Partner

Jonathan Schwartz

Venture Partner

Martin Shen

Venture Partner

Bradley Siegler

Venture Partner

Vikram Somasundaram

Venture Partner

Laks Srini

Venture Partner

Thomas Steinacher

Venture Partner

Steven Stewart

Venture Partner

Evan Stites-Clayton

Venture Partner

Brad Stronger

Venture Partner

Alexander Strunkin

Venture Partner

Ted Suzman

General Partner

Tim Suzman

General Partner

Jonathan Tang

Venture Partner

Bryan Wilcox

Venture Partner

Kitch Wilson

Venture Partner

Ray Wu

Venture Partner

Andrew Yaroshevsky

Venture Partner

Richard Yu

Venture Partner

Winston Zhang

Venture Partner

Ti Zhao

Venture Partner

Past deals in API

Flagright

Seed Round in 2025
Flagright offers an API-driven platform for real-time fraud detection and anti-money laundering solutions. It assists financial institutions and fintech companies in automating transaction monitoring, identifying suspicious activities, and ensuring regulatory compliance.

Suger

Series A in 2025
Suger is a technology company that provides a management platform specifically designed for Software as a Service (SaaS) businesses to facilitate sales on multiple cloud marketplaces, including AWS, Azure, GCP, Red Hat, Snowflake, and Databricks. The platform offers comprehensive features for managing product listings, offers, contracts, metering, and billing across these marketplaces. Suger’s solution automates the lifecycle management of contracts, including renewals, plan changes, and upselling, which helps businesses streamline their operations and enhance their B2B sales processes. By enabling companies to efficiently navigate the complexities of multi-cloud environments, Suger supports them in accelerating their sales efforts without limitations.

expand.ai

Pre Seed Round in 2024
Expand.ai specializes in transforming any website into a type-safe API, facilitating seamless and secure integration. Its platform, a web scraping tool, offers customizable schemas, rigorous data quality checks, and high-speed extraction capabilities, enabling developers and businesses to efficiently access and integrate reliable web data, thereby reducing operational complexities.

Comfy Deploy

Pre Seed Round in 2024
Comfy Deploy is a Software as a Service (SaaS) company that specializes in providing production-ready Application Programming Interfaces (APIs) for generative AI applications. Its platform offers customizable workflows, managed Graphics Processing Units (GPUs), and production-ready APIs, empowering product teams to efficiently deploy AI applications with flexibility.

Outerport

Pre Seed Round in 2024
Outerport specializes in streamlining document comprehension through advanced chain-of-memory reasoning technology. Its core product is a model registry platform, facilitating secure and efficient management and deployment of foundation model weights. This enables data scientists and engineers to swiftly load and handle models on existing cloud infrastructure or on-premise hardware, enhancing productivity.

PeerDB

Seed Round in 2024
PeerDB is a technology company that provides a data movement platform. This platform specializes in efficient replication of Postgres databases and capturing changes in data, allowing clients to sync, transform, and query data across various stores using simple SQL commands.

Fileforge

Seed Round in 2024
Fileforge is an API for PDF document workflows. With Fileforge, you can generate, manipulate, host, share, sign and track your documents - all in on place. Our open-source library helps developers build complex documents that integrate with our API and external services to build document-centric workflows.

Marblism

Pre Seed Round in 2024
Marblism is a web application development platform designed to serve businesses looking to streamline their application creation process. The platform harnesses an application programming interface that generates code for various components, including front-end, back-end, emails, and notifications. This capability allows users to develop customized applications tailored to their specific needs, enhancing operational efficiency and user experience. Marblism provides a fully functional web-based solution that facilitates the development and deployment of applications, making it a valuable tool for organizations aiming to innovate and improve their digital offerings.

Suger

Seed Round in 2023
Suger is a technology company that provides a management platform specifically designed for Software as a Service (SaaS) businesses to facilitate sales on multiple cloud marketplaces, including AWS, Azure, GCP, Red Hat, Snowflake, and Databricks. The platform offers comprehensive features for managing product listings, offers, contracts, metering, and billing across these marketplaces. Suger’s solution automates the lifecycle management of contracts, including renewals, plan changes, and upselling, which helps businesses streamline their operations and enhance their B2B sales processes. By enabling companies to efficiently navigate the complexities of multi-cloud environments, Suger supports them in accelerating their sales efforts without limitations.

Credal.ai

Seed Round in 2023
Credal.ai provides an enterprise AI platform that enables secure adoption and governance of AI by offering APIs, a secure chat UI, and a Slack bot with data pre-integrated and automatic enforcement of access policies, data masking, and acceptable use policies. The platform supports popular models such as GPT-4 32k and Claude, allowing enterprises to control usage with audit logging and robust data security. In addition, Credal.ai develops an AI-based assistant that helps managers draft personalized memos for stakeholders by syncing with productivity tools to infer changes in key documents, task trackers, and data, and by generating explanations for internal teams. This combination supports secure data handling, responsible decision-making, and seamless integration with existing workflows.

Giga ML

Seed Round in 2023
Giga ML specializes in AI-driven customer service solutions for businesses. It offers AI agents that can be integrated into enterprise systems to handle customer inquiries and support tasks. Additionally, the company has developed an open AI API compatibility platform that allows users to fine-tune and deploy custom large language models, enabling them to leverage the advantages of tailored AI models.

Berri AI

Seed Round in 2023
Berri AI is an API platform for SaaS businesses to create ChatGPT apps programmatically. Users can quickly connect their data with Berri and create LLM apps that are ready for production.

Duplo

Seed Round in 2023
Duplo is a financial technology company focused on providing embedded payment solutions for business-to-business enterprises in Africa. The company offers a platform that includes APIs and user interfaces, allowing businesses to automate payment inflows, reconcile transactions at scale, and execute mass payouts efficiently. Duplo's services enable businesses to seamlessly collect and attribute cashless payments while managing their payment operations effectively. In addition to these core functionalities, Duplo also facilitates the provision of financial services to the customers of its client businesses.

Pivo

Seed Round in 2022
Pivo is a financial platform designed to democratize access to financial services for small and medium-sized businesses across Africa. By providing a comprehensive suite of tools tailored for the supply chain sector, Pivo enables clients to efficiently access various financial services from a single hub. This approach fosters a more streamlined and effective means for businesses to engage with borderless financial solutions, ultimately enhancing their operational capabilities and growth potential.

Freshpaint

Series A in 2022
Freshpaint is a data platform that specializes in collecting and analyzing customer data to enhance marketing efforts. The company’s software allows for seamless integration of customer data from websites and applications into various marketing and analytics tools, enabling teams to automate the collection of behavioral data, such as clicks and page views. This automation reduces the workload on engineering teams, allowing them to concentrate on product development. Freshpaint's platform aids product, data, and growth teams in accessing the insights needed to improve user engagement and retention. Co-founded by Michael Malis and Steven Fitzsimmons, Freshpaint aims to streamline the management of customer data for more effective marketing strategies.

Integration Labs

Seed Round in 2022
Integration Labs, formerly RootFi, provides a unified data integration platform and API that lets companies read and write customers' accounting, e-commerce, and payments data across platforms. The solution supports automating accounting, underwriting credit risk, and deriving business insights by syncing data across systems with standardized data models, enabling clients to streamline AP/AR, payroll accounting, and to build new tools and applications.

Lamin

Venture Round in 2022
Lamin develops open data platforms for computational biology. It offers data application programming interfaces (APIs) that employ machine learning algorithms to provide data management services, collaborative workspaces, and learning platforms for research and development in the biotechnology industry.

Rio

Venture Round in 2022
Rio is a cryptocurrency-based platform established in 2022 that enables users to buy and sell cryptocurrencies quickly, completing transactions in five minutes or less. The platform offers wallets for direct cryptocurrency purchases, as well as tokens for acquiring NFTs. Rio's user-friendly approach allows customers to make transactions using cash, credit cards, or bank transfers. Additionally, the platform's APIs can be seamlessly integrated into existing applications, facilitating efficient transaction processes for users.

Flagright

Seed Round in 2022
Flagright offers an API-driven platform for real-time fraud detection and anti-money laundering solutions. It assists financial institutions and fintech companies in automating transaction monitoring, identifying suspicious activities, and ensuring regulatory compliance.

Duplo

Seed Round in 2022
Duplo is a financial technology company focused on providing embedded payment solutions for business-to-business enterprises in Africa. The company offers a platform that includes APIs and user interfaces, allowing businesses to automate payment inflows, reconcile transactions at scale, and execute mass payouts efficiently. Duplo's services enable businesses to seamlessly collect and attribute cashless payments while managing their payment operations effectively. In addition to these core functionalities, Duplo also facilitates the provision of financial services to the customers of its client businesses.

Hyperbeam

Venture Round in 2022
Hyperbeam is a platform that enables developers to integrate multiplayer web browsers into their applications. It synchronizes audio and video among multiple participants, facilitating real-time collaboration and interaction online.

Vaya

Seed Round in 2021
Vaya is a technology company that specializes in embedded credit solutions, providing a customizable credit API that enables lenders to tailor their credit products to meet specific needs. By integrating seamlessly with various platforms, Vaya empowers sellers to generate new revenue streams while also facilitating the pre-qualification of customers for credit. This capability enhances seller acquisition efforts, improves seller retention, and reduces borrower acquisition costs, thereby delivering significant advantages to both lenders and sellers.

Tuli

Seed Round in 2021
A London-based MedTech company transforming pharmacies into local health hubs. Tuli makes essential services like blood testing accessible from high streets, ensuring everyone has convenient neighborhood healthcare.

Axle Health

Seed Round in 2021
Axle Health specializes in software for home healthcare providers. Its platform offers scheduling, workforce management, patient engagement, and logistics optimization tools. Integrated with various EMRs, Axle's customizable solutions improve clinical team utilization and automate operational tasks.

Terra API

Seed Round in 2021
Terra facilitates seamless health data exchange. It connects applications with various wearables, sensors, and blood labs.

Axle Health

Seed Round in 2021
Axle Health specializes in software for home healthcare providers. Its platform offers scheduling, workforce management, patient engagement, and logistics optimization tools. Integrated with various EMRs, Axle's customizable solutions improve clinical team utilization and automate operational tasks.

Terra API

Seed Round in 2021
Terra facilitates seamless health data exchange. It connects applications with various wearables, sensors, and blood labs.

Dapi

Seed Round in 2020
Dapi Ltd is a fintech company that specializes in developing an open banking application programming interface (API) designed to facilitate seamless payment transactions between consumer bank accounts and businesses. Established in 2019 and based in Abu Dhabi, United Arab Emirates, Dapi provides a suite of APIs that enable real-time access to customer bank accounts, payment initiation, and financial data retrieval. This functionality allows developers to create a variety of financial applications, including digital wallets and budget trackers, while also enabling fintech companies to offer services based on bank statement data. Operating in seven countries, including the United States, Saudi Arabia, Egypt, Pakistan, South Africa, and Kuwait, Dapi has experienced significant demand for its services, achieving notable growth in annual recurring revenue.

Freshpaint

Seed Round in 2020
Freshpaint is a data platform that specializes in collecting and analyzing customer data to enhance marketing efforts. The company’s software allows for seamless integration of customer data from websites and applications into various marketing and analytics tools, enabling teams to automate the collection of behavioral data, such as clicks and page views. This automation reduces the workload on engineering teams, allowing them to concentrate on product development. Freshpaint's platform aids product, data, and growth teams in accessing the insights needed to improve user engagement and retention. Co-founded by Michael Malis and Steven Fitzsimmons, Freshpaint aims to streamline the management of customer data for more effective marketing strategies.

Lang API

Seed Round in 2019
Lang API, founded in 2019 and based in San Francisco, California, specializes in developing translation software designed to help developers localize and internationalize applications efficiently. The company automates the translation process across a wide range of languages, including Spanish, French, Chinese, and Russian, simplifying the integration for developers. By wrapping a string in a specific function, developers can seamlessly translate content within their JavaScript and TypeScript codebases. Lang API offers flexibility in translation options, allowing users to utilize machine translations for testing purposes and opt for human translations for production environments. The company's tools aim to enhance the developer experience while ensuring that applications can effectively reach and engage users worldwide.

OneGraph

Seed Round in 2018
OneGraph Inc is a technology company that provides a GraphQL service designed to connect various Software as a Service (SaaS) APIs, facilitating faster and more efficient integrations for web and mobile applications. Founded in 2018 and headquartered in Walnut, California, OneGraph automates key processes such as parallelization, queuing, and caching, enabling users to manage data requests through a single interface. The platform simplifies authentication flows, making it easier for clients and their customers to access services securely. With support for numerous APIs, including major platforms like Stripe, Salesforce, and GitHub, OneGraph aims to streamline the development process and enhance the overall user experience in accessing and utilizing API data.
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