A gunman was charged with two seemingly unconnected Bronx murders just six days apart – including the shooting of a “selfless” 28-year-old man who took on an extra job at Papa John’s to help support his family, cops said Tuesday. 

Jailyn Wagner was charged with second-degree murder, first-degree manslaughter and criminal possession of a weapon in connection to each case after members of the NYPD’s Violent Felony Squad descended on his home Monday morning, police said. 

In the first murder, just before 3 a.m. July 23, Wagner is accused of shooting Idriss Cherif El Farissy, 28, in the head outside his East 176th Street apartment building in Crotona Park East, authorities said. 

Wagner was the son of a tenant who lived in the same building, according to El Farissy’s fiancée, who identified herself as Maria.

“This person has destroyed our family,” Maria told The Post Tuesday evening. “This person has destroyed our everything, our dreams.”

“To be honest, at this moment, we are just glad that this person has been arrested,” she added. “I think it will definitely help us, all of us, in our grief process, because it is almost impossible to grieve when you know that the person who killed someone that you love so deeply is still outside, just eating, walking and living their life like nothing happened.”

El Farissy was returning home from his delivery driver shift and had just parked his car when he encountered the alleged shooter, according to authorities and his fiancée.

“When he got to the house, I was with him on the phone, and he told me, ‘Baby, I’m going to park the car. Let me hang up on you, just so that I can park and I’m coming inside,’” Maria told The Post. “And I thought, like, OK, but by the time he hung up the phone, got out of the car, all I heard was shots outside the house.”

“And then I got out, and he was on the floor…and he died. He died there.”

The callous shooter rifled through the victim’s pockets before making his getaway on a Citi Bike, according to cops and sources.

El Farissy – who immigrated from Morocco to the US when he was 17, according to his fiancée – was pronounced dead at the scene, authorities said.

El Farissy attended an international high school in the Big Apple before moving on to Medgar Evers College, and then Baruch College, where he obtained a bachelor’s degree in finance, his fiancée said. 

He had been working as a provider contracts manager at Emblem Health for five years, and only recently tacked on the Papa John’s job because he and Maria – who began dating in high school – had hoped to start a family. 

“Idriss really wanted to be a dad, but actually one of the reasons why he worked so hard and worked multiple jobs was not only because he wanted to have a child, but to give them a financially stable life and as well as support people that he cares [for],” Maria said. 

Hours before the murder, he visited his parents to say goodbye because he and Maria were planning an upcoming vacation. 

But then Papa John’s called him for help, because they were short-staffed.

“And then of course Idriss being Idriss was like, ‘Of course, I’ll go,’” Maria said. “Anyone who has met Idriss knows that Idriss was humble, loving, Idriss was respectful, Idriss was selfless.”

He had only been working at the pizza joint for about eight months, according to his colleague Leslie Pozo, 29, a cashier.

During his short tenure there, he’d already won “employee of the month” twice, she recalled.

He had planned to go on vacation to the Dominican Republic with his fiancée two weeks after his life was tragically taken, according to Pozo.

“I don’t understand this sort of violence towards someone who didn’t have any issues with anybody,” Pozo said. “This was truly an act of pure violence. He didn’t have no issues with anybody.”

Then the evening of July 29, Wagner allegedly shot 39-year-old Roman Martinez multiple times in the head, police said. 

Martinez was found unconscious inside of an RV mobile trailer on East 176th Street near Mohegan Avenue just before 8 p.m., cops and sources said. 

Martinez, who lived about a block away from the spot he’d parked the camper, was pronounced dead at the scene. 

The motive for that deadly shooting remained unclear Tuesday. 

Martinez’s cousin Javier Bruno told News 12 at the time that his relative was sleeping in the camper when he was killed. 

“I’m destroyed right now,” Bruno said. “He was a good guy. He didn’t have problems with nobody and he didn’t deserve that.”

Wagner’s arraignment was still pending late Tuesday afternoon.

He has no prior arrests in the city, police said.