Seattle did not announce any further changes to the coaching staff, however, the Times reported that Angels special assistant Tim Bogar is expected to be named bench coach.
Servais and Bogar, coming from the Angels, already have an existing connection with general manager Jerry Dipoto (who is the former Angels GM himself).
"Through the course of the 20-plus years I've known Scott, I've come to see him as one of the most complete, well balanced and inclusive baseball people in the industry," Dipoto said in a press release. "I've been fortunate enough to call him a teammate as a player, while also having worked closely with him as an organizational leader in both Colorado and Los Angeles. He is a communicator with strong baseball acumen and leadership skills. I truly believe his strong character and career experiences as a player, coach and executive have prepared him for this opportunity."
Servais played in the Major Leagues for 11 seasons, but has never coached or managed professionally.
The 48-year-old Servais has been an Angels assistant GM since 2011 and interviewed to become the full-time GM earlier this year. He was passed up for the now-Angels GM Billy Eppler.
"I am excited and grateful for the opportunity to manage the Seattle Mariners," Servais said in the press release. "It has long been my goal to manage a big league team and while I took a slightly different path than many, I am confident in my ability to lead. We have a terrific core of players and I'm looking forward to bringing in a coaching staff that will help me establish a winning culture here as we work toward putting a championship-caliber team on the field for the fans of the Northwest."
Servais replaces Lloyd McClendon, who was fired from his post after Dipoto was given his position. He becomes the 17th manager in Mariners history and will attempt to lead the team to their first postseason appearance since 2001.