Portland law firm Pierce Atwood LLP said Wednesday that Gloria Pinza will step down as managing partner at the end of 2015 and will be succeeded by David Barry, who served until recently as chair of the firm’s litigation practice group. Pinza will continue as a partner in the firm.

With almost 30 years of experience, Barry has established himself as a leader in his roles as litigation practice chair and a member of Pierce Atwood’s management committee, the firm said in a news release. In those roles, he has worked to establish the firm’s vision, priorities and goals, and to ensure those goals are attained in a challenging and evolving business environment.

Since taking over as managing partner in 2009, Pinza has guided Pierce Atwood through some of the most significant changes in its history. Under her watch, the firm’s Boston office has grown to 33 attorneys, and in 2009 she managed the launch of the firm’s office in Providence, Rhode Island.

In 2011, Pinza led a relocation of the firm’s office in Portland to the waterfront. That same year, she led a rebranding effort that included a new web and social media presence, enhancing communication with clients.