Jude Buckley has resigned as chief commercial officer of Best Buy Co., where he was in charge of store design and strategies for vendors and wireless carriers, the company said Monday.

He is the second top operations executive to leave the Richfield-based electronics retailer in recent weeks. On April 14, Best Buy said Shawn Score, a 29-year veteran of the company, left after little more than a year as head of the company's U.S. retail stores.

Best Buy didn't comment on Buckley's departure, which was disclosed in a regulatory filing. Buckley couldn't be reached for comment.

Buckley, 43, is an Australian-born executive who worked in investment banking in London and managed the Swedish unit of the Carphone Warehouse, one of Europe's biggest distributors of cellphones, before joining Best Buy in 2007.

He started as a vice president in the mobile unit of the Richfield-based electronics retailer, then became the president and head merchant of the unit in 2010. Since that time, the company expanded the small-footprint Best Buy Mobile store concept into several hundred malls and other locations around the United States.

After the appointment of Hubert Joly as chief executive officer in 2012, Buckley was elevated to chief commercial officer reporting to Joly. His responsibilities included vendor and carrier relationships, merchandising, accessories, services, store operations and supply chain for cellphones, tablets and other mobile devices in the main Best Buy stores. He also continued to oversee the separate Best Buy Mobile stores.