William Souillard-Mandar


William is a Principal on the investing team at REMUS. He focuses on investments in deep technology companies, particularly those deploying machine learning or artificial intelligence in their products or those spinning out of the MIT ecosystem and other research networks.

William joins REMUS with a background in artificial intelligence, computer science, and healthcare. Most recently, William led the AI and analytics of recently-acquired MIT spinoff Digital Cognition Technologies. Based on his research work at MIT CSAIL on AI for understanding and modeling behavior and cognition, William developed and validated the algorithms behind the first FDA-cleared AI-based cognitive testing platform, deployed across dozens of countries for international pharmaceutical clinical trials and clinical use.

Originally from France and having lived extensively in Spain, William studied at MIT for a double B.S. in Mathematics and Computer Science, followed by a Master in Computer Science focusing on artificial intelligence. He conducted research at the MIT Computer Science and Artificial Intelligence Laboratory, winning the 2016 INFORMS Innovative Application of Analytics Award and publishing in major journals and conferences for AI (ML, NIPS) and healthcare (AAIC, AAN, CTAD). He has experience working with large technology and finance companies and serves as a technology advisor and angel investor to several early-stage companies. William has been active as a mentor over the years within the MIT Sandbox Innovation Fund and as an MIT Educational Counselor.

What’s the best advice you’ve ever received?

Inspiration can be a great spark, but tenacity and discipline are the fuel that get you through to success. This had led me to largely shift from a goal-based mentality in favor of a system-based mentality: decide on a framework, execute, incorporate feedback, and repeat, building momentum over time and returning to inspiration and goals on a more macroscopic scale.

What inspires you?

People with originality, who are willing to think outside the box and pursue new ideas, and who are relentless in their commitments.

What would you tell an aspiring entrepreneur?

Decide early, in your company or ideally in your life, if you want to be a king (maximize control of your company) or a merchant (maximize value). Ideally you will achieve both, but a lot of decisions in your company and life and the resulting measures of success will depend on that preference.