Jeremy King, who joined Walmart seven years ago and led the company's online transformation against growing pressure from Amazon (AMZN), is leaving the company.
Walmart (WMT) announced King's departure "for a new adventure" in a memo to US employees on Wednesday. Reuters first reported the news.
Walmart's digital sales grew 40% last year as the company expanded online delivery and buy online, pickup in store options.
In a recent interview with CNN Business, King said that when he joined Walmart in 2011, he expected to either stay at the company for six months or spend the rest of his career there.
King will stay on as chief technology officer until March 29. While the company looks for his replacement, Fiona Tan, senior vice president of customer technology at Walmart Labs, will take on an expanded role.
Walmart's stock fell 1% in after-hours trading.