--- title: "Intro" description: "Konstantin Vinogradov — VC investor in open source, AI, and infrastructure software. Founder of the Open Source Endowment and creator of the ROSS Index." ---

Konstantin Vinogradov — VC Investor in Open Source, AI and Infrastructure Software

## Hi 👋🏻 I'm an early-stage investor specializing in open source, AI, and infrastructure software, with over a decade of experience backing tech startups, previously as a General Partner at venture firm Runa Capital. I am a Kauffman Fellow (Class 30). Beyond investing, I founded the [Open Source Endowment](/osendowment/), created a quarterly ranking of trending open-source startups — [ROSS Index](https://github.com/RunaCapital/ROSS-Index), and occasionally publish [notes](/writing/) on open source and other topics. Started programming at 13 to build games, then studied math, physics, and computer science at university, and still enjoy exploring new technologies hands-on. Especially with AI coding agents. One can usually find me in London or San Francisco Bay Area. ## Investments Today I partner with technical founders as an angel investor, offering open source expertise, unique data-driven insights, and a strong network of infra software funders and operators. Earlier in my career, I was a General Partner at Runa Capital ($600M+ AUM), which has backed 100+ enterprise software and deep-tech startups since 2010, including n8n, Mambu, Nginx, MariaDB, Lace Lithography and Pasqal. I also originated the firm's seed program and internal AI & data platform — approaches I actively continue to apply today. Select seed and pre-seed investments I made personally or at Runa: - **[Higgsfield](https://higgsfield.ai/)**: AI video and image generator for social media ($1B+ ARR) - **[Mastra](/mastra/)**: Leading open-source TypeScript AI agent framework - **[Entire](https://entire.io/)**: Next-gen developer platform for humans and AI agents - **[White Circle](https://whitecircle.ai/)**: AI guardrails and red-teaming platform for businesses - **[Twenty](/twenty/)**: Leading open-source enterprise CRM platform - **[Rork](https://rork.com/)**: AI-powered mobile app building platform - **[Archestra](https://archestra.ai/)**: Enterprise MCP Platform for AI Agents - **[Dosu](https://dosu.dev/)**: AI teammate that manages documentation for engineering teams - **[Keep](/keep/)**: Open-source AIOps and alert management (acquired by **Elastic**) - **[Sidekick](https://www.meetsidekick.com/)**: Work-focused browser based on Chromium (acquired by **Perplexity**) ## Philanthropy Charity is important for my philosophy of life, and I've channeled this into building tech-enabled communities, endowments, and nonprofit projects. My largest initiative, co-founded with tech founders, VCs, and OSS creators, is the [Open Source Endowment](/osendowment/) — the world's first endowment fund exclusively dedicated to open source. It creates a truly sustainable funding source for maintainers by leveraging [similarities between OSS and universities](/oss-universities/), a [data-driven approach to donations](/algo-sponsors/), and other original ideas.