Plan your Back-to-Work strategy – Visit our Toolkit for Ideas and Direction

We are a team of doers, optimists, pragmatists, strategists, technologists, operators and collaborators. And we work for you.

Sid Shenai

Venture Partner

Sid Shenai joined Madrona as a Venture Partner in early 2019.

Sid is co-founder and CEO of Proof Diagnostics, a Broad Institute spin-out that is developing a smart, portable system for the detection of COVID-19 and other diseases to bring the power of cutting-edge molecular technologies directly to individuals where they are and empower them to make timely and effective personal health decisions.

Prior to Proof and Madrona, Sid was a Portfolio Manager and the Head of Developed Market Rates at Bracebridge Capital. While there, he designed, built, and oversaw the firm’s interest rates business as the sole portfolio manager, implementing relative value strategies broadly across cash, futures, and OTC derivatives. Sid also co-led the development of Bracebridge’s capabilities and strategies in FX derivatives, as well as in Western European sovereign credit, including sovereign and quasi-sovereign debt and derivatives, and securitizations, both public and private.

Before starting his graduate education, Sid was a consultant at McKinsey & Company and worked in Swaziland and Ghana with TechnoServe (strategy consulting for local governments and entrepreneurs in the developing world). He also advised on financial markets and fiscal policy at the National Economic Council (White House).


Sid graduated from the joint JD/MBA program at Harvard Law School and Harvard Business School. While in graduate school, he conducted academic research in behavioral finance. He also graduated with highest honors from Harvard University with AB and AM degrees in Physics, with a research focus in quantum information and high energy theory.


Sid has been a long-time angel investor, with a particular focus in the life sciences. He is also a Translational Research Advisor at the Institute for Protein Design at the University of Washington. Sid is a member of the New York State Bar Association and serves or has served on the boards of several non-profit organizations, including the Center for Excellence in Education, IDinsight, and Even Ground.