Dean Skelos used his powerful position in Albany to “strong​-​arm” people into giving his son, Adam, lucrative no-show jobs and cash, prosecutors said Wednesday as the father and son’s corruption retrial kicked off.

For the second time in nearly three years, prosecutors told jurors in Manhattan federal court that Dean Skelos, the ex-state Senate majority leader, dangled favorable legislation in order to get his struggling son paid.

“This case is about the abuse of political power to satisfy personal greed,” Assistant US Attorney Douglas Zolkind said in opening statements.

He said the Skelos duo were “a politician and son who felt they were entitled to money just because they had power.”

“He strong-armed business people who depended on his vote in the Senate,” Zolkind said of the former longtime senator, 70, who represented Rockville Centre on Long Island. “For a corrupt politician, there is no better scenario than getting paid for an action he might have taken anyway.”

In 2015, the Skeloses were found guilty of conspiracy, extortion and soliciting bribes by a jury that found they used Dean’s position to shake down more than $300,000 in payoffs from three businesses.

That conviction, however, was overturned by a Supreme Court ruling that significantly narrowed the definition of bribery. An appeals court ruled that jurors in the first trial weren’t properly instructed prior to deliberating.

Prosecutors charged that Adam, now 36, wasn’t qualified to do the jobs his father allegedly lined up for him — an accusation they still contest.

Glenwood Management was one of the three firms that allegedly paid Adam at the behest of Dean.

The real estate giant’s general counsel Charles Dorego — who testified at the first trial and will take the stand again this time around — said Dean “badgered” him about helping Adam.

And during a meeting with Adam, Dorego complied.

“He cut a $20,000 check and stuck it in an envelope and handed it to Adam Skelos in a restaurant in Long Island,” Zolkind told jurors. “Not an honest day’s work, not for any work at all. Adam Skelos didn’t have to lift a finger except to grab that envelope.”

With the help of his dad, Adam also allegedly raked in cash from Arizona-based environmental firm AbTech Industries, which won a multimillion-dollar stormwater treatment contract with Nassau County, and Physicians’ Reciprocal Insurers, which also relied on legislation in Albany.

“Why is it [Dean] targeted companies that so heavily depended on his vote in the Senate?” Zolkind posed — his boss, US Attorney Geoffrey Berman, in the audience. “Was it because they each thought his son was the best man for the job or because they feared the Senate majority leader might punish them if they refused?

“It was the price they had to pay to ensure that Senator Skelos used his official power to benefit them — and not to crush them.”

Lawyers for the Skeloses said Dean did try to help his son — but only as a loving, concerned father and not as part of a quid pro quo.

“There’s no criminal exchange,” said Robert Gage, who represents Dean. “On those occasions where Dean did ask for assistance for his son, he never did so with criminal intent.”

Adam’s attorney Julian Brod said the son worked with companies that happened to “have business before the state.”

Brod claimed that with AbTech, Adam didn’t need experience in the environmental field because he worked in sales.

“Adam had connections and that is what the company needed at this point … Adam threw himself into the work,” he said.

Brod admitted, “Adam is sometimes volatile. He has sometimes made mistakes. [But] this is not a case about whether Adam is a good person or a bad person.”