An officer who shot and killed an unarmed ex-con during a 2019 traffic stop in the Bronx was cleared of wrongdoing by the NYPD’s top cop Thursday — allowing him to remain on the job, The Post has learned.

NYPD Commissioner Jessica Tisch determined Lt. Jonathan Rivera was justified when he fatally shot Allan Feliz because he was protecting the life of his brother in blue, according to her nine-page ruling. 

Tisch made the decision on the October 2019 ordeal after reviewing a separate analysis of the caught-on-camera clash that was conducted by the state Attorney General’s office.

“The commissioner looked at this case very closely,” a law enforcement source said. “She leaned heavily on the AG’s report.

“In the AG’s report, the AG said the shooting was justified because [Rivera] had a reasonable belief that another police officer was in grave danger and his life was at risk,” the source added, referring to Rivera’s colleague, Officer Edward Barrett. 

“The PC agreed with the AG’s analysis and found that Rivera is not guilty… She went through this very closely and it shows how much thought and time she put into it.”

Feliz, 31, was driving his 2018 Volkswagen Atlas on Bainbridge Avenue near East 211th Street around 3 p.m. when he was pulled over by then-Sgt. Rivera, Officer Barrett and Officer Michelle Almanzar.

Cops believed the men inside weren’t wearing seatbelts – though they were. 

What began as a routine traffic stop turned violent when Barrett realized Feliz — who once served five years on a burglary conviction — had an open warrant and asked him to step out of the vehicle.

The struggle, which was caught on bodycam, began when Feliz got back into the car and it moved, prompting the cops — who believed he was trying to drive away — to use a stun gun on him and try to pull him out of the car.

“Yo bro I’m going to f–king shoot you,” Rivera could be heard saying in the video, while Barrett yelled for Feliz to “put it in park, put it in park.”

Rivera eventually fired a single shot killing Feliz — the father of a then-6-month-old whom he had with Aquino.

The AG’s report concluded that “there is no obvious reason to doubt” that Rivera opened fire because he believed the act would save his fellow officer’s life and that “the totality of the circumstances strongly suggest that [his] belief was reasonable.” 

Lou Turco, president of the Lieutenant’s Benevolent Association, commended Tisch’s decision. 

“Today’s decision by Commissioner Tisch sends a clear and decisive message to the members of the NYPD who risk their lives every day that our Commissioner will back officers acting in good faith performance of their duties, no matter the political risks,” the union head said. 

“I commend her for standing her ground for what she believes is right when it comes to our officers.”

Detectives’ Endowment Association President Scott Munro said the commissioner’s decision demonstrated “great courage.” 

“We believe this brave decision sends a clear message to our members who are called upon to make impossible, split-second decisions that she will back our members when they are acting in the good-faith performance of their duties, and that she will male decisions based on what is right, and not based on emotions or politics,” Munro said. 

“We commend her for having our officers’ backs and recognizing the difficult job they do each and every day keeping our City safe for all New Yorkers.”

The NYPD’s Sergeants Benevolent Association also applauded the move.

“I applaud the Police Commissioner in making what was clearly the correct decision,” President Vincent Vallelong said.

“Rivera had to take immediate action in a millisecond and undoubtedly saved both his life and the life of his partner. We commend Commisisoner Tisch for thoroughly reviewing all the facts in this case and making the right call.”

But the Civilian Complaint Review Board said Tisch’s decision countered a recommendation from Deputy Commissioner Rosemarie Maldonado, who had recommended that Rivera be fired.

“The CCRB is preparing our formal response, and we are hopeful that we will be able to persuade the Commissioner to uphold Deputy Commissioner Maldonado’s finding,” CCRB Executive Director Jonathan Darche said in a statement.

Before the car stop turned deadly, Allan had handed police the Ohio ID of his 29-year-old brother, Samy Feliz, police sources said at the time.

But Allan had used Samy’s name before, the sources said. As a result, Allan’s open warrants for disorderly conduct, littering and unlicensed driving still came up when Samy’s ID was run, sources said.

Feliz additionally had four felonies on his record, for burglary, robbery and marijuana possession. 

Feliz’s death at the hands of police sparked his family to file a $350 million potential class action lawsuit against the city and the NYPD for an alleged pattern of racial profiling and excessive use of force.

The lawsuit also claims that Feliz wasn’t trying to drive away but rather when he got back in the car it “was caused to shift forward.”

“It’s just constant abuse after the other, one after the other he just gets punched, brutalized,” Ashley Verdeja, Allan’s sister, said back in November following one of Rivera’s departmental trail appearances. “And it’s really painful to have to relive those images and those videos once again and once again. It is beyond traumatizing to say the least.

“But the biggest slap in the face for all of us here, as the family of Allan and mostly for my mother, is having to see Lt. Rivera walk in with his gun,” she added. “You know, it’s a slap in the face to have to see him still carrying a weapon after what he did to my brother and what he did to her son.”