Aaron Katz is the Co-Founder and CEO of ClickHouse, the world's fastest OLAP database company, which he has built from a 12-person open-source project into a $15 billion enterprise serving 4,000 customers including Tesla, Anthropic, Meta, and OpenAI. A veteran of Salesforce (12 years, from $20M to $4B in revenue) and Elastic (CRO, $5M to $500M), Katz assembled a founding team mid-pandemic, relocated engineers from Russia to Amsterdam, and raised over $1 billion in funding. In January 2026 ClickHouse closed a $400M Series D; by May 2026 the company surpassed $250M ARR, growing 250% year-over-year.
Matt Riley co-founded Swiftype (YC W12) in 2012, built it into a leading search-as-a-service platform, and sold it to Elastic in 2017. He then spent nearly eight years at Elastic as GVP & GM of Search, overseeing product, engineering, design, and developer relations for one of the world's most widely used search platforms. In late 2025, he returned to Y Combinator as a Visiting Partner - advising the next generation of founders using hard-won lessons from the full founder arc: zero to startup, startup to acquisition, acquisition to enterprise scale.
Chetan Puttagunta is a General Partner at Benchmark, one of Silicon Valley's most storied venture capital firms, where he has backed transformative companies in enterprise software, developer tools, and open-source infrastructure since 2018. Before Benchmark, he was a General Partner at NEA, where he led investments in MongoDB, MuleSoft, and Elastic — a trifecta of open-source commercial powerhouses. Born in Hyderabad and raised in Maryland, he graduated from Stanford with a degree in Electrical Engineering before cutting his teeth in tech investment banking. A self-described 'gulab jamun enthusiast,' he's known for his sharp conviction on open-source business models, his collaborative boardroom style, and his ability to find the best Indian desserts in Scotland.
Peter Fenton is a General Partner at Benchmark, Silicon Valley's most storied early-stage venture firm, where he has spent nearly two decades backing audacious founders building transformative technology companies. A Stanford philosophy graduate who once dug sanitation trenches in rural Brazil, Fenton has a gift for identifying the exact moment when a company's rising adoption curve meets its declining risk curve. His track record - Twitter, Yelp, Zendesk, New Relic, Elastic, Hortonworks, and now Sierra and Exa - places him consistently on the Forbes Midas List, peaking at #2 in 2015, and he was named VC of the Year at the 2014 Crunchies.