Friday night, Dave Doeren earned his second consecutive MAC championship in Northern Illinois’ wild, double-overtime win over Kent State. On Saturday, he earned a new job: According to an official release from the university, Doeren has agreed to become the new coach at North Carolina State, replacing the fired Tom O’Brien.In the release, athletic director Debbie Yow called Doeren a “highly motivated overachiever” who shares the university’s goals “in the classroom and on the field of competition,” while Doeren, 40, praised N.C. State’s “world-class facilities and fans that are second to none.” It’s unclear whether Doeren will stay at NIU to coach a bowl game or take over in Raleigh immediately.At Northern, Doeren inherited a winner from his predecessor, then Minnesota-bound Jerry Kill, whose third and final NIU team in 2010 won 11 games and played for the MAC championship. But Doeren saw that success, and raised it: In two years, his Huskies are 17-1 in MAC games with back-to-back conference titles. They are currently tied with Notre Dame and Ohio State for the nation’s longest winning streak at 12 games. At 12-1, NIU is likely to finish in the Top 25 in the final polls for the first time in school history, and with Friday night’s win have an outside shot at a BCS bowl bid if they can climb from No. 21 in the current BCS standings to No. 16 or higher when the final rankings are released on Sunday night.Before landing at NIU, Doeren spent five years as defensive coordinator on Bret Bielema’s staff at Wisconsin. He has also served as a linebackers coach at Kansas (2002-05) and Montana (2000-01). He played linebacker at Drake University in Iowa.At N.C. State, he’ll inherit another winner, albeit one that had begun to grow stale in O’Brien’s sixth year. After a 9-4 breakthrough in 2010, the Wolfpack came in at 8-5 in 2011 and 7-5 this year, earning a single win against an opponent with a winning record — a 17-16 upset over then-unbeaten Florida State on Oct. 6. After knocking off the Noles, N.C. State lost three of its last six, including a last-second heartbreaker to rival North Carolina and an embarrassing, 33-6 shellacking at the hands of Virginia. The Wolfpack have not won an ACC championship since 1979 and have only won 10 games in a season once in school history, with an 11-3 finish in 2002.