Mark Blackwell

Mark Blackwell is a General Partner at Builders VC in San Francisco, California, focusing on seed and Series A investments in enterprise software and developer tools. Previously, he served as a partner at Sierra Ventures and held early product management roles at the data center automation software startup Opsware. Throughout his venture capital career, Blackwell has executed over 20 investments as a General Partner, contributing to a broader firm portfolio of more than 50 companies and backing notable exits like Confluent's 2021 initial public offering. His recent deal activity includes leading a $15 million Series A funding round for an artificial intelligence coding platform in the first quarter of 2025. Holding a Bachelor of Science in Computer Science from Stanford University, Blackwell currently centers his investment focus on enterprise SaaS, machine learning infrastructure, and cybersecurity.