Harpoon VC

Harpoon is an early-stage venture capital firm established in 2018 and located in San Diego, California. The firm specializes in investing in early-stage companies across various sectors, including artificial intelligence, machine learning, autonomy, enterprise technology, fintech, security, space, and synthetic biology. As a Registered Investment Adviser, Harpoon focuses on identifying and supporting innovative startups that are poised for growth in these dynamic industries.

William Allen

Co-Founder

Austin Hays

Partner

Larsen Jensen

Founder and General Partner

Past deals in Open Source

n8n

Series B in 2025
n8n GmbH, founded in 2019 and based in Berlin, Germany, specializes in developing an open-source workflow automation tool that allows users to connect various applications and automate business processes. Its platform features a visual, node-based interface that enables users to create custom workflows without requiring extensive coding skills. n8n's solution facilitates the automation of daily tasks, data synchronization, and integration of AI capabilities, making it accessible for businesses to streamline their operations. The tool also offers features for notification management, security access, and data storage, allowing clients to manage and synchronize information across different applications and databases efficiently.

Semgrep

Series D in 2025
Semgrep is a static code analysis tool that focuses on improving software security and reliability. The platform empowers developers to write secure code by automatically examining and evaluating code across the software ecosystem. It identifies vulnerabilities, questionable practices, and exemplary coding patterns from both leading technology companies and open-source projects. This functionality allows developers, security teams, and researchers to assess the safety of open-source initiatives and enhance their understanding of secure coding practices. Semgrep aims to streamline the security process in software development, ensuring that it supports rather than hinders rapid development efforts.

Firestorm

Series A in 2024
Firestorm is focused on developing modular open-source architecture tailored to meet the needs of the Department of Defense, emphasizing affordability and mass production. The company specializes in the manufacturing of loitering munitions and mission-adaptable systems designed to enhance aerial weaponry. Its products offer significant modularity and precision in payload delivery, equipping paratroopers with advanced aircraft suitable for modern combat scenarios. By prioritizing low-cost solutions, Firestorm aims to contribute to the evolving demands of the hyper-enabled battlefield.

deepset

Series B in 2023
Deepset is a company specializing in natural language processing (NLP) solutions, focusing on leveraging the latest advancements in machine learning to create real-world applications. It is known for developing the Haystack open-source framework, which facilitates the deployment of NLP tasks, and for offering deepset Cloud, a platform designed for enterprise AI teams. Since its inception in 2018, deepset has supported numerous AI teams globally by providing reliable, open-source technology and tailored solutions. The company's software emphasizes the use of transfer learning to enhance model performance while minimizing the amount of training data required, thereby enabling users to unlock value from diverse text sources effectively.

n8n

Convertible Note in 2022
n8n GmbH, founded in 2019 and based in Berlin, Germany, specializes in developing an open-source workflow automation tool that allows users to connect various applications and automate business processes. Its platform features a visual, node-based interface that enables users to create custom workflows without requiring extensive coding skills. n8n's solution facilitates the automation of daily tasks, data synchronization, and integration of AI capabilities, making it accessible for businesses to streamline their operations. The tool also offers features for notification management, security access, and data storage, allowing clients to manage and synchronize information across different applications and databases efficiently.

deepset

Series A in 2022
Deepset is a company specializing in natural language processing (NLP) solutions, focusing on leveraging the latest advancements in machine learning to create real-world applications. It is known for developing the Haystack open-source framework, which facilitates the deployment of NLP tasks, and for offering deepset Cloud, a platform designed for enterprise AI teams. Since its inception in 2018, deepset has supported numerous AI teams globally by providing reliable, open-source technology and tailored solutions. The company's software emphasizes the use of transfer learning to enhance model performance while minimizing the amount of training data required, thereby enabling users to unlock value from diverse text sources effectively.

RoboCorp

Series A in 2021
Robocorp is a cloud platform specializing in robotic process automation (RPA) and offers open-source RPA tools. It provides a Python-based stack designed to simplify automation, enabling developers to automate a wide range of tasks using numerous built-in keywords and libraries. Robocorp's approach emphasizes performance, scalability, and security, allowing automation solutions to run on any platform and machine. The platform supports horizontal scaling to ensure that mission-critical processes are executed efficiently, making it easier for organizations to integrate RPA into their operations without the limitations often associated with traditional offerings.

n8n

Series A in 2021
n8n GmbH, founded in 2019 and based in Berlin, Germany, specializes in developing an open-source workflow automation tool that allows users to connect various applications and automate business processes. Its platform features a visual, node-based interface that enables users to create custom workflows without requiring extensive coding skills. n8n's solution facilitates the automation of daily tasks, data synchronization, and integration of AI capabilities, making it accessible for businesses to streamline their operations. The tool also offers features for notification management, security access, and data storage, allowing clients to manage and synchronize information across different applications and databases efficiently.

Semgrep

Series A in 2020
Semgrep is a static code analysis tool that focuses on improving software security and reliability. The platform empowers developers to write secure code by automatically examining and evaluating code across the software ecosystem. It identifies vulnerabilities, questionable practices, and exemplary coding patterns from both leading technology companies and open-source projects. This functionality allows developers, security teams, and researchers to assess the safety of open-source initiatives and enhance their understanding of secure coding practices. Semgrep aims to streamline the security process in software development, ensuring that it supports rather than hinders rapid development efforts.

RoboCorp

Seed Round in 2020
Robocorp is a cloud platform specializing in robotic process automation (RPA) and offers open-source RPA tools. It provides a Python-based stack designed to simplify automation, enabling developers to automate a wide range of tasks using numerous built-in keywords and libraries. Robocorp's approach emphasizes performance, scalability, and security, allowing automation solutions to run on any platform and machine. The platform supports horizontal scaling to ensure that mission-critical processes are executed efficiently, making it easier for organizations to integrate RPA into their operations without the limitations often associated with traditional offerings.
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