Spencer is an entrepreneur and mathematician with a passion for improving well-being. He is the CEO of Spark Wave, a startup foundry which creates novel software products from scratch, designed to solve problems in the world (e.g. scalable care for depression and anxiety, technology for improving social science research). He also founded ClearerThinking.org, which offers free tools and training programs used by over 200,000 people, which are designed to help improve decision-making, increase positive behaviors, and reduce cognitive biases. Spencer has a PhD in applied math from NYU, with a speciality in machine learning. Previously, he co-founded a quantitative investment firm, where he designed algorithms to make daily predictions about thousands of stocks. Spencer's work has been featured by numerous major media outlets, such as the Wall Street Journal, the Independent, Lifehacker, Gizmodo, Fast Company, and the Financial Times.