Ms. Sierra was born and raised in Hartford, Connecticut. She attended high school in Puerto Rico and graduated from Buchanan High Military School. She has a B.S. in Management/Human Resources from Central Connecticut State University and a M.S. Public Administration from the University of Hartford.

She has over ten years of experience in highly visible, responsible roles in state, and federal government and in a Fortune 500 health insurance company. She is a Commissioner for the Hartford Economic Development Commission, Board Member of Connecticut Workforce Development Board, former member of Catholic Family Services, Institute of Hispanic Family, and many more.

Currently, Ms. Sierra is the Executive Director of the Connecticut Association for United Spanish Action, Inc. (CAUSA) the largest coalition of Latino community-based organizations.