Elected in 2020, Jeffrey is a city councilmember for the City of Costa Mesa, California. Previously, he served on the city's planning commission for four years as the vice chair. Jeffrey began his public service over two decades ago as the deputy for District and Environmental Policy to Los Angeles City Councilmember Ruth Galanter, where he focused on local planning issues, citywide sustainable development and smart growth initiatives, and legislation. He also served as the planning director for the Baldwin Hills Conservancy, where he developed planning and implementing strategies to administer $40 million in bond funding for the creation of a 1,400-acre park in Los Angeles. Jeffrey gained considerable experience working at various private planning consultancies on a range of projects across the country. He has led and managed city general plan updates, habitat restoration plans, mitigation and conservation bank assessments, and strategic planning of land portfolios.