Keith Rabois, the former chief operating officer of Square who resigned that role in 2013, will leave Xoom's board of directors on May 28.

Xoom, a money transfer company, also announced the immediate appointment of Tom Killalea to its board. Killalea spent 16 years at Amazon, where he was the company's first chief information security officer and also led the development and engineering teams for the Kindle Content Ecosystem. He is advising several private companies, including Profitero, which delivers global e-commerce intelligence for brands and retailers, Xoom said in a March 27 press release.

"Tom's deep curiosity, insightful approach to complex business problems and extensive product, technology and security experience uniquely position him to bring a fresh perspective to the business, and I am delighted to welcome him to our board of directors," said John Kunze, president and CEO of Xoom, in a press release. "On behalf of the entire Xoom team, I would also like to thank Keith for his eleven years of service as director at Xoom. He has been here since the beginning and it was his invaluable counsel and entrepreneurial spirit that helped make Xoom what it is today."

Rabois left Square following a sexual harassment allegation from an attorney who alleged Rabois' physical relationship with a companion he recommended for a job at Square was not consensual. Square did not find any evidence of wrongdoing, but said Rabois exercised poor judgment.

Rabois is currently an investor at Khosla Ventures, a position he's held since March 2013, according to his LinkedIn page.

He served as Square's chief operating officer from August 2010 to February 2013, and has also held executive positions at Slide and LinkedIn. 

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