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Simeone Marino, PhD

Chief Technology Officer

After receiving his PhD from the University of Rome, Dr. Marino has been working closely at the intersection of Bioinformatics and Data Science. He is an associate researcher on the SOCR team. At GrayRain, he is building the VirtualHospitalTM web tool and directing his energy towards materializing beautifully integrated data solutions for users.

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Johnny Liu

Chief Operating Officer

Johnny is a senior at the University of Michigan studying Data Science. At GrayRain, he is dedicated to bringing innovative solutions to market, fostering relationships between key stakeholders, and creating the best possible experiences for end-users. Johnny is a multi-faceted learner striving to understand industry ecosystems and solve socioeconomic problems using data-driven decisions.

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Ronak Shetty

Chief Strategy Officer

Ronak is a senior at the University of Michigan studying Data Science. He is an avid fan of data streaming and its high-value use cases within today’s world. At Gray Rain, he is committed to building out the company’s long-term strategy and driving research and development.

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Benjamin Danzig


Ben is a computer science major at the University of Michigan. He is an expert in front-end development, software-design, and extreme programming.

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Ivo Dinov, PhD

Executive Advisor

Professor Dinov leads the University of Michigan’s Statistical Computational Online Resource (SOCR) research group, which is dedicated to developing solutions for the biomedical and healthcare sectors. As a researcher with over two decades of industry experience, he fully understands the problems behind obtaining data from a user’s perspective, which is why he is dedicated to bringing novel solutions to the sector.