Dan Siroker

Investment Stage

Focus Areas

About Investor

Dan Siroker is a technology entrepreneur and investor best known as the co-founder of Optimizely. His or her experience spans SaaS, experimentation, analytics, product development, enterprise software, and growth. This background combines firsthand company-building experience with exposure to the decisions that shape early-stage and growth businesses. As an angel investor, this perspective can be useful when assessing product-market fit, founder quality, market timing, distribution, and the ability of a team to scale. The investor can also bring practical insight into hiring, go-to-market execution, fundraising, partnerships, and the operating tradeoffs founders face as a company grows. For entrepreneurs working in adjacent sectors, the value extends beyond capital to pattern recognition, strategic introductions, and a network developed through operating and investment roles. Overall, the profile is most relevant to founders looking for an investor who can combine sector knowledge with pragmatic guidance on building a durable technology business.