#Joe Judge’s Giants roster philosophy means shot for unheralded Jarren Williams

“He says to everybody, he doesn’t care where you come from or anything like that,’’ Jarren Williams told The Post.

“It’s not just young guys. He says everybody is going to get what they earn … and I really think he’s being true to that.’’

The insistence of new Giants head coach Joe Judge that the entire roster is open for business is not the typical coach-speak lip service. How Judge maneuvers players, in and out of training camp practices, guys working with the first team and the second, and the third, is either happenstance or by design. With Judge, go with by design.

No biases, no preconceived notions, no homage to the résumé or the fancy college football program.

This is a good thing for Williams, an undrafted rookie cornerback from Ohio who spent three years at St. Francis (Pa.) and last season at Albany — not exactly the fast lane to the NFL. Judge will judge Williams, and all the other hopefuls, based on what he sees, not where that player has been, and so far, so good.

“He’s a guy who takes coaching points from the classroom to the field,’’ Judge said. “He’s very receptive, he plays with a good demeanor. He’s got a good body frame on him. I like the way he comes out every day.’’

Cutdown day arrives Saturday, and Williams has a shot to stick around on the newly expanded practice squad.

“Coming in I wasn’t intimidated,’’ Williams said. “I believed in myself. This is my dream and I want to show that I belong, so I don’t have time to be intimidated or scared, you know?’’

At times, Williams lines up against Sterling Shepard, Golden Tate or Darius Slayton, the top three Giants targets. He has made his plays and, of course, the receivers made plenty of their own plays, as well.

There is no time to waste. Williams was hobbled a bit during Tuesday’s practice, received some attention on the side and returned to the action in time to make a strong pass breakup in the end zone on Austin Mack, an undrafted rookie from Ohio State.

That Williams is being, as they say, “coached hard’’ is good news, because it shows the Giants are interested in learning what he is about.

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“I didn’t know a lot about him coming into this,’’ defensive backs coach Jerome Henderson said. “He showed up and I was like, ‘Well, we may have something here.’ We’ll see where it goes. But he’s done a good job of at least grabbing people’s attention.’’

Looking to enhance his football career, Williams last year wanted to find a higher level of competition and that led him to Albany.

“He came a week before our 40 test and he ran 4.39 for us,’’ Albany coach Greg Gattuso told The Post. “We were kinda like ‘Whoa, run that again.’ I grabbed him and asked ‘Hey man, have you ever run like that before?’ And he said ‘Coach, I’ve never been timed in the 40 before.’ ’’

Williams quickly worked his way into the starting lineup and helped the Great Danes — picked in the preseason coach’s poll to finish last in the Colonial Athletic Conference — to second place and an at-large bid to the FCS playoffs.

“I loved being there,’’ Williams said. “I kind of wish I was there longer, but I was grateful for the time I was there.’’

Friday night, Williams got to don his very own white Giants jersey — No. 26, just like Saquon Barkley — with his name on the back for the scrimmage at MetLife Stadium. There were no fans in the building; Williams felt some magic nevertheless.

“Me being a small-school guy, I’ve never really been in a stadium like that where I was a player in it.’’ He said. “It was a blessing, seeing the scoreboard on and all that, the theatrics of like a regular game, coming out of the tunnel and actually playing. This is the NFL, every kid dreams about this but I’m here, I’m part of that 1 percent that gets to say they’re actually in the league. But at the end of the day, you got a job to do, so you can’t get caught up in the moment.’’

Judge continues to stress, “Once you get your foot in the door, all that matters is what you do here.’’

Williams is doing what he can to stay around.