Jared Kushner and wife Ivanka Trump attend the 2016 Met Gala in NYC.

He also happens to be the Republican presumptive nominee’s son-in-law, having married Trump’s daughter Ivanka Trump in 2009 after dating for two years. The pair have three children together.

The 35-year-old real estate investor and newspaper owner is just one of the many rich and famous names attached to the Trump family. But, once a behind-the-scenes type operator, Kusher’s name has appeared more and more in recent months as his involvement in the campaign and his presence at events has increased.

Like his wife, Kushner is the son of a New York real estate mogul, Charles Kushner. He is the eldest of four children and has been the chief executive officer of his family’s real estate company, Kushner Properties, since 2008.

Often described as a wunderkind, Kushner has doubled the assets of his family’s empire since taking over. Kushner Properties now owns and operates more than 20,000 residential apartments nationwide, along with 1.1 million square metres of office, industrial and retail space.

In 2007, the business savvy billionaire bought a 41-storey building on Fifth Ave in Manhattan for $2.5 billion — the most expensive office building sale in US history up to that point. In 2015, he landed spot No. 25 on Fortune’s “40 under 40” list ranking the most influential young people in business.

Donald Trump, Ivanka Trump and Jared Kushner in NYC back in 2012.Source:Supplied

But Kushner first gained notoriety in 2006 when he purchased weekly newspaper the New York Observer for a record $US10 million ($13.8 million) at the age of just 25. Unsurprisingly, the Observer endorsed Trump for president last month, a move that led to the sudden resignation of the newspaper’s national political reporter, Ross Barkan.

In its endorsement, the Observer’s editorial writers addressed the publication’s connection to the candidate. “Donald Trump is the father-in-law of the Observer’s publisher. That is not a reason to endorse him,” the editorial read. “Giving millions of disillusioned Americans a renewed sense of purpose and opportunity is.”

Before Kushner took over, Trump was one of the paper’s favourite targets to mock.

Jared Kushner in 2006, one year after purchasing the New York Observer.Source:AP

Kushner’s involvement in his father-in-law’s unexpectedly successful White House bid is the latest step in a rapid ascent for the Orthodox Jew from New Jersey.

During the campaign, Kushner has appeared frequently on stage beside Trump and has played an active role in helping him formulate policy positions and campaign strategy.

“Jared has impressed everyone on the campaign, including seasoned campaign veterans with his instincts and intellect,” a campaign adviser revealed to ABC News this month.

“He’s emerged as a quiet power whose input is sought on a wide variety of important issues.”

Kushner’s reach includes making phone calls to various Republican powerbrokers on Trump’s behalf and facilitating meetings with top leaders including Senator Jeff Sessions, the Alabama Republican who is one of Trump’s most vocal supporters.

Kushner played a key role in writing the speech that Trump delivered last month before the American Israel Public Affairs Committee (AIPAC), in which he strongly defended the Jewish state and condemned President Obama. But he ended up in hot water after it emerged that Ken Kurson, the editor-in-chief of the Observer and a former speechwriter, read a draft of the speech and provided feedback to Kushner. After the details surfaced, the Observer issued a statement saying it was “revisiting” its policy on Trump coverage, and that no editorial staffer would give input to the Trump campaign.

Ivanka Trump and Jared Kushner on their wedding day at Trump National Golf Club in New Jersey.Source:Supplied

‘The Donald.’Source:Getty Images

A far cry from his brash father-in-law, famous for constantly commenting on how smart, successful, popular and wealthy he is, Kushner prefers to steer clear of the spotlight and has been described as a well-mannered, reticent and self-effacing kind of guy. Vanity Fair recently said he was “the sort of gentleman who opens doors.”

Evidently, opposites attract. Trump is openly very fond of his son-in-law and has welcomed him into his inner circle, often singing his praises in public. The billionaire businessman singled out his daughter’s husband during his victory speech in New Hampshire in February. “Jared is a very, very successful real estate entrepreneur in Manhattan,” Trump proudly declared. “But I actually think he likes this [politics] better than real estate. I’m excited. And he’s very good at politics.”

He often refers to his “fantastic” son-in-law when touting his pro-Israel position. “I am a great friend of Israel,” Trump said at a February town hall meeting in Las Vegas. “I was the grand marshal of the Israeli Day Parade … My son-in-law is Jewish, and he’s fantastic — a very successful guy in the New York real estate.”

It’s not clear if Kushner supports Trump’s more controversial ideas, such as banning Muslim immigrants from entering the country. In fact, he’s only given one interview about his father-in-law since his campaign kicked off 11 months ago. All he said was that he thinks ‘The Donald’ would “be great.”

Trump has now secured the support of enough delegates to clinch the Republican presidential nomination, after unbound delegates pledged to back him. The Republican Party will not make the results official until its national convention in July, when delegates actually cast their votes for the nominee.

Vanessa Trump, Donald Trump Jr., Ivana Trump, Ivanka Trump and Jared Kushner in 2015.Source:Supplied