This was indeed an interview but there was no need for introductions Wednesday as Dave Gettleman arrived at the Giants facility to make his bid to become the team’s next general manager.

Gettleman met with co-owners John Mara and Steve Tisch, plus Ernie Accorsi, the former Giants general manager serving as a consultant in the search. All four men are quite familiar with one another. Gettleman spent 15 years working for the Giants in their pro personnel department and remains a popular person in the building.

It is quite possible Gettleman is the favorite for the job. Marc Ross, the Giants’ vice president of player evaluation, interviewed for the position on Monday. After Gettleman, Kevin Abrams, named the interim general manager after Jerry Reese was fired Dec. 4, will also get an interview, most likely this week. Abrams had been the assistant general manager before his promotion.

If they want, the Giants can immediately hire one of the three men they have spoken to, because they have satisfied the Rooney Rule requirement of interviewing a minority candidate. The expectation is the Giants want to make this more of a broader search and speak with a few candidates from outside their organization, which necessitated holding off the hiring until after the season.

This would be Gettleman’s second shot at a GM job. He was hired as the Panthers general manager in 2013 and quickly built them into a Super Bowl team before he was abruptly fired by owner Jerry Richardson this past July. He is respected around the NFL for his work in personnel but is 66 years old, which may turn off the Giants. A possible scenario for the Giants is to hire Gettleman and retain Abrams, with Abrams waiting in the wings as the successor. Abrams is the team’s chief contract negotiator and salary cap expert.

Gettleman no doubt had to convince the Giants he has the energy and staying power to be more than a one or two-year option. After all, following the 2011 season, frustrated by not landing general manager jobs with the Giants, Browns (twice) and Chiefs, Gettleman — the Giants pro personal director — walked into Mara’s office and told him he wanted to take a step back, asking Mara to promote his assistant, Ken Sternfeld, while taking more or a part-time role. Gettleman was 61 at the time and figured he would never fulfill his dream of becoming an NFL general manager.

“My whole thing bringing Dave in, the plusses are he knows everybody in the building, he knows how we operate, he knows the system,’’ a source with knowledge of the Giants’ operation told The Post. “The negative is, he left a few years ago because he didn’t want to travel as the pro guy anymore. You’re 67 [on Feb. 21] years old and you’d be a bridge. A bridge to what? To Kevin Abrams? If that’s the case, just make Kevin the GM.’’

Gettleman would be a safe choice but hardy a step toward the “wholesale changes’’ Mara said are necessary after jettisoning Reese and head coach Ben McAdoo on the same Black Monday.

Up next for the Giants is a wild card: Louis Riddick, currently an ESPN analyst, gets the next interview, according to someone familiar with the search. Riddick has a varied résumé as an NFL safety for eight seasons and college and pro NFL front office experience with the Redskins (2001-2004) and Eagles (2005-2013).

If Gettleman gets the nod, there is speculation he might be interested in Jim Schwartz for the head coaching vacancy. Schwartz, currently the Eagles’ defensive coordinator, went 29-51 in five (2009-2013) seasons as the Lions’ head coach.

Gettleman, a native of Boston, was renowned with the Giants for his instant-recollection of players at the very bottom of the depth chart of teams across the NFL. His evaluations led to the signings of Plaxico Burress, Antonio Pierce, Shaun O’Hara and other veterans imported to help win a Super Bowl.

Gettleman took over a Panthers team that had not made the playoffs for four consecutive years and instantly produced a winner. The 2013 Panthers went 12-4 in Gettleman’s first season and in 2015 went 15-1, losing to the Broncos in Super Bowl 50.

Gettleman had his detractors in Carolina for the way he parted ways with popular Panthers Steve Smith and DeAngelo Williams and for rescinding the franchise tag on cornerback Josh Norman.

His key moves were retaining Ron Rivera as head coach and signing quarterback Cam Newton to a five-year, $103.8 million contract. He is a big proponent of building teams from the inside out, along the offensive and defensive lines.

“Tom Coughlin made a great statement to me fairly early when he came in,’’ Gettleman told The Post in a 2016 interview. “He said ‘Big men allow you to compete.’ The more you look at it, you watch film — I was a pro guy for 15 years — that’s all I did was watch film. It’s true. If you’re not strong on either side of the ball, with the big guys, it’s gonna bite you, it’s gonna cost you.’’