Daniel Arrigg Koh is a public servant dedicated to positive social change.

He currently serves as the White House Deputy Cabinet Secretary, where he helps guide the affairs related to the Cabinet of United States President Joseph R. Biden. Immediately prior, Dan served as the Chief of Staff of the United States Department of Labor, a $14 billion, 17,000 employee organization dedicated to improving the lives of America's 150 million workers. He helped lead the development of the Healthcare Emergency Temporary Standard that protects millions of healthcare workers around the country from COVID-19.

Before his service in the Biden-Harris administration, Dan served as Chief Operating Officer of HqO, a technology company focused on changing the way we interact with physical space. In this capacity, he helped grow the company from 30 employees to over 150 across multiple financing rounds, leading to a $500 million valuation.

In 2019, Dan was elected to the Town of Andover Select Board where he served as Vice Chair. Previously, he was a candidate for the Massachusetts Third District of the United States Congress, where he ran a true grassroots campaign with thousands of volunteers knocking hundreds of thousands of doors, coming within 0.2% of the Democratic primary nomination after a district-wide recount.

From 2014-2017, Dan served as Chief of Staff to Boston Mayor Martin J. Walsh, guiding his agenda for the city, its 18,000 employees, $3 billion budget, and 700,000 residents. In this role, he pioneered “CityScore,” an award-winning performance management system for improving city services.

Dan previously worked as Chief of Staff to Arianna Huffington at The Huffington Post and Advisor to Mayor Thomas M. Menino of Boston. He has served additional roles at Booz Allen Hamilton, Spencer Stuart, Lincoln Center for the Performing Arts, Major League Baseball, and the New England Patriots. He began his career as an intern for the late Massachusetts Senator Edward M. Kennedy.

He has been named to the “30 under 30” list by Forbes Magazine and the “40 under 40” list by the Boston Business Journal. In 2016, he received an honorable mention from The Boston Globe for “Bostonian of the Year.” A native of Andover, Massachusetts, Dan holds a B.A from Harvard College and an M.B.A. from Harvard Business School, where he was President of his section. Dan is an avid runner, having completed 62 marathons across the U.S. and Canada.