Enrique Rodriguez, who has served as chief executive of TiVo Corp. for less than a year, is leaving the company to join Liberty Global PLC as technology chief.

TiVo said Thursday that Mr. Rodriguez, whose resignation was effective immediately, will stay on as an adviser during the leadership transition. The company has named board director Raghu Rau as interim president and CEO. TiVo’s board has started its search for a permanent CEO.

Mr. Rodriguez will join Liberty Global, a TV and broadband company, later this month as its executive vice president and chief technology officer, Liberty Global said separately Thursday. It marks a return to a familiar role for Mr. Rodriguez, who worked as AT&T Entertainment Group’s CTO for a little over two years before joining TiVo.

Mr. Rodriguez’s departure comes as TiVo has been in the process of looking at strategic alternatives. The company had said earlier this year it would look at either selling itself, going private or doing an acquisition.

TiVo shares fell 1.8% in morning trading. Shares are down 13% so far this year.