Atticus Finch made Josephine Bahn (Jo) want to be a lawyer; Ruth Bader Ginsburg made her proud to be one. As an attorney and a Member of the Junior League of Washington (JLW), leadership and service are core aspects of Jo’s identity. She has dedicated over 1,200 hours to pro bono work in 2020 alone, and she is driven to help women thrive—a passion she has further developed during her time with Junior League. Previously, she was a member of the Junior League of Baltimore (JLB).

Shortly after joining JLB, Jo became Chair-Elect and then Chair of the Fund Development Committee. Her leadership experience also includes Fundraising Vice President and member of the Audit, Finance and Personnel Committees. She served The Association of Junior Leagues International (AJLI) as a member of the 2019-2020 Fiscal Accessibility and Dues Task Force, when she worked with women from Leagues across the Association to study a potential dues increase. Jo was active on the JLB's Board of Directors as Community Impact Vice President, leading the effort to further its impact-based community service model. Jo credits JLB with molding her into a better lawyer, advocate, friend, and parent.

Jo has been praised for her tireless work ethic. Upon presenting her with their 2020 Government Pro Bono Award, the Washington Council of Lawyers called her "a shining example of service to others." She has twice received awards from the American Bar Association Young Lawyers Division (ABA YLD), most recently being named one of 40 top young lawyers who exemplify leadership, vision, innovation, achievement, and legal and community service.

Active in the ABA YLD since law school, Jo currently serves as the national Chair of the ABA YLD and will serve in the role until August 2023. Her leadership with the association has ranged from organizing law student outreach to co-chairing a campaign to help develop a national dialogue about issues women attorneys face. Jo's other volunteer roles include Public Commissioner of the Montgomery County Commission on Veterans Affairs, and administrative member of the Bethesda-Chevy Chase Rescue Squad.

An associate in Cozen O'Connor's Washington, DC office, Jo litigates construction law and commercial litigation matters. Jo earned her Bachelor of Arts in History and Political Science from Saint Joseph's University, and her Juris Doctor from New York Law School.