Mr Biden hailed the 38-year-old as “a frontrunner, patriot, and problem-solver” as he introduced the decide on Tuesday night time.
“He speaks to the very best of who we’re as a nation,” he wrote on Twitter.
Mr Buttigieg mentioned he was “honoured” to have been requested to fill the position.
“It is a second of large alternative—to create jobs, meet the local weather problem, and improve fairness for all,” he mentioned.
He’s the primary of Mr Biden’s Democratic rivals for the presidency to land a job in his Cupboard, and is in step with his pledge to usher in America’s most various management staff when he takes workplace subsequent month.
It marks one other step in a meteoric political rise for the previous US Navy officer who grew to become a shock contender within the Democratic nomination contest earlier this 12 months.
Mr Buttigieg’s marketing campaign finally faltered amd he dropped out of the race in early March earlier than he endorsed Mr Biden.
The 78-year-old has in contrast Mr Buttigieg to his late son, Beau.
“To me, it’s the best praise I can provide any man or lady. And like Beau, he has a spine like a ramrod,” he mentioned in March.
“I promise you, over your lifetime, you’re going to finish up seeing a hell of much more of Pete than you might be of me.”
Mr Buttigieg has been married to his husband, Chasten, a junior highschool instructor, since 2018.
He went from “Mayor Pete” to “Slayer Pete” throughout the presidential marketing campaign as he efficiently took on Trump supporters on Fox Information.
Mr Biden returned to the campiagn path in Georgia final night time forward of two essential run-off votes within the southern state on January 5 that may resolve which social gathering – the Republicans or Democrats – will management the Senate.
At a drive-in rally in Atlanta, the President-elect slammed Georgia’s two Republican senators, David Perdue and Kelly Loeffler, for siding with President Donald Trump in his efforts to undo the presidential election leads to Georgia.
He mentioned they “stood by” and “totally embraced nullifying practically 5 million Georgia votes”.
If the Democratic challengers, Jon Ossoff and Loeffler and Reverend Raphael Warnock, win each races, they might wrest management of the Senate from the Republicans, wiping out their two-vote majority and making Vice President-elect Kamala Harris the tiebreaker of a 50-50 chamber.