Amanda M. McMillian has been named executive vice president and general counsel, effective immediately, for Anadarko Petroleum Corp. (NYSE: APC), the company said in a news release.

Robert K. Reeves, the company’s executive vice president, law and chief administrative officer, will remain in his current role until his retirement at year-end 2018.

“Amanda is an exceptional leader whose experience and perspectives will be welcome additions to Anadarko’s Executive Committee as we continue to pursue safe, responsible and capital-efficient growth with improved returns for shareholders,” Anadarko CEO Al Walker said in the release. “During his 14 years with Anadarko, Bobby has been a significant contributor and trusted strategic advisor across multiple areas of the company.”

McMillian has served in positions of increasing responsibility since joining Anadarko in December 2004, including most recently as senior vice president, general counsel, corporate secretary and chief compliance officer, the release said. During her tenure at Anadarko, she also served as vice president, general counsel and corporate secretary of Anadarko subsidiary Western Gas Holdings and general partner of Western Gas Partners, a publicly traded midstream master limited partnership, from January 2008 to August 2012.

Prior to joining Anadarko, she practiced corporate and securities law at the law firm of Akin Gump Strauss Hauer & Feld LLP, according to the release.

McMillian holds a bachelor of arts from Southwestern University, where she serves on the board of trustees, and received both a master of arts and a juris doctor from Duke University.