Prior to joining PIMCO, he was Vice Chairman of Investor Relations and Business Development and a Senior Managing Director at The Blackstone Group.

[7] He worked in soup kitchens as a teenager, and helped start a toll-free number to inform adolescents about sexually transmitted diseases.

[16][19] CEO Stephen A. Schwarzman said in 2006 that Studzinski's "outstanding track record in transatlantic investment banking will be invaluable in accelerating the growth of our advisory business".

[20] He advised multinational corporations, conglomerates, governments, banks, and institutions, on acquisitions, equity investments, restructurings, spin-offs, mergers, and overseas operations.

[12][21][22][23] In early 2015, Blackstone began spinning off three of its divisions, including its M&A advisory group, to avoid any potential conflicts of interest with its primary private-equity business.

[27][28] In this capacity, he holds responsibility for a number of sovereign and international institutional relationships, as well as ultra high-net-worth families outside the U.S.[27] In September 2018, Studzinski was appointed to the newly created roles of Managing Director and Vice Chairman of the global investment-management firm PIMCO.

It supports and nurtures outstanding artists and creative professionals, especially in the early stages of careers in music, theatre, and the visual arts.

While its core funding is devoted to training programmes that equip emerging artists for life as a creative professional, the Genesis Foundation is also the UK's largest commissioner of sacred music, having commissioned 30 new choral works to date.

Among these is James MacMillan's Stabat mater, a 60-minute work for choir and string orchestra commissioned by the Genesis Foundation and premiered by Harry Christophers, The Sixteen and Britten Sinfonia at the Barbican Centre, London in October 2016.

[37] In April 2018 a performance of MacMillan's Stabat mater, presented by the Genesis Foundation, became the first concert to be live-streamed from the Sistine Chapel in the Vatican.

The work subsequently received its US premiere in New York at Lincoln Center's Alice Tully Hall (November 2019), again with Harry Christophers conducting The Sixteen.

In October 2022, the Genesis Foundation presented the concert A Tribute to the Life and Reign of Elizabeth II: A Garland for the Queen in the Chapel Royal of St Peter ad Vincula at the Tower of London.

[38] The performers were once again Harry Christophers and The Sixteen, and the programme included the Genesis Foundation's 30th choral commission, Cecilia McDowall's 'O Lord, Make Thy Servant, Elizabeth'.

[40] When launching the Kickstart fund, Studzinski said: "Covid-19 has changed the world for all of us, and at this crucial juncture we cannot afford to risk losing a whole generation of outstanding creative talent through lack of opportunity.

The pandemic has jeopardised the current livelihoods and long-term careers of both young and established professionals in the arts, with freelancers especially adversely affected.

The Genesis Foundation's new £1million fund will engender vital new opportunities for creative professionals through paid work on exciting, innovative and well-structured projects."

Now Vice-Chair Emeritus of Human Rights Watch,[48] John Studzinski was an active board member of the NGO for 18 years, running its investment, audit and fundraising committees and establishing its operations in Europe, India and Japan.

[50] In the UK he has been Chairman of Benjamin Franklin House Museum since 2008 and in 2018 he endowed the £2million Chair of Innovation at the Royal College of Art,[51] where he served from 2011 to 2020 as a Council member.

[2][11] Strongly motivated by his spiritual and religious faith, he has a chapel in his historic London home, and prays and reads books on religion and meditation daily.