Until December 2012, Klaiman was Executive Vice President of Promotion and Artist Development for Universal Republic Records, a division of Universal Music Group. Most notably, he was responsible for the overall strategic promotion of multiple Grammy winning, platinum and gold artists, including Amy Winehouse, The Band Perry, Colbie Caillat, Damian Marley, Drake, Enrique Iglesias, Gotye, Florence + the Machine, Jack Johnson, Jessie J, Lionel Richie, Lil Wayne, Nicki Minaj, as well as the mainstream radio and video promotion of country superstar Taylor Swift.
In 2007 under Klaiman's stewardship Universal Republic promotion helped launch that year's two most successful radio and digital artists: Amy Winehouse, who won 5 Grammys in 2008, and Colbie Caillat, whose hit single "Bubbly" dominated the Top 40 and AC platforms for 19 weeks.
In 2008, Klaiman helmed the radio promotion partnership between the country label Big Machine Records and Universal Republic to bring mainstream radio success to country superstar Taylor Swift. This partnership led to Swift's single "Love Story" becoming the first ever crossover Country recording to reach #1 on the Mediabase Top 40 Radio format in the almost-two decade history of the radio platform.
Klaiman also worked in 2009 to breakout two new artists who went on to achieve number one hits under Universal Republic: Minnesota artist Owl City aka Adam Young with "Fireflies," and Cash Money's first non-hip hop mainstream success, UK singer/songwriter Jay Sean, with "Down." The song was the first Cash Money single to hit the Top 40 top spot, and Owl City's "Fireflies" took over the #1 position on the Billboard Hot 100 immediately after "Down," making the two debut singles the only back-to-back number one hits from new artists via the same label in 2009.
Klaiman's 2009 success was commended by Street Information Network, who awarded him the 2009 Promotion Excellence Award, and with Friday Morning Quarterback, naming him "Executive Of The Year." 
In 2010, Klaiman led the revitalization of Enrique Iglesias’ pop music career, helping spearhead campaigns for the artist’s hit single “I Like It” which peaked at #1 in both sales and airplay. In 2010, Klaiman also guided the U.S. breakout of Florence + the Machine, who performed at the 2010 MTV Video Music Awards and received a Grammy Nomination for Best New Artist. Klaiman also led Nicki Minaj’s mainstream foray with her single "Super Bass" which went on to become one of the [List of best-selling singles in the United States|best-selling singles in the United States].
In 2011, through the strategic partnership with Republic Nashville, Klaiman steered the mainstream career of The Band Perry through an implementation of the country-crossover promotion strategy initially created to break country superstar Taylor Swift. Klaiman also worked closely on the US debut of UK superstar Jessie J, whose 2011 singles “Price Tag” and “Domino” confirmed her success as a singer-songwriter in the US. 2011 also saw the continued success of Enrique Iglesias with the follow-up #1 single “Tonight”, as well as the release of Drake’s #1 album debut Take Care which has, as of May 2012, produced 5 hit singles under Klaiman’s aggressive radio promotion.
In 2012, Klaiman led the breakout of the year’s most popular new act, Gotye, taking the breakout single “Somebody That I Used to Know” to the top of 4 radio formats, according to Mediabase: AAA, Alternative, Hot AC, and Top 40 in addition to reaching #1 on the Billboard Dance chart. "Somebody That I Used to Know" is at #1 on the Billboard Hot 100 chart (encompassing airplay, sales, and streams) for 6 consecutive weeks as of May 25, 2012. Gotye’s 2011 album “Making Mirrors” is certified gold, and is one of the best-selling albums of 2012.
Klaiman began his career in 1990 as a manager at Frank DiLeo Management. He served as Senior Director of National Alternative Promotion for Elektra Entertainment Group before joining the Epic Records Group in 1996 as Vice President of Alternative Music. In 1998 he was named Vice President of Promotion for Sony 550 Music, becoming Vice President of Promotion for Epic Records Group in 1999. He was named Senior Vice President of Promotion for the company in 2001, helping to plot the strategic radio development of artists such as Celine Dion, Shakira, Korn, Oasis, Fiona Apple, Incubus, Sade, Jamiroquai, in addition to others. In 2006 he was appointed Executive Vice President of Promotion for Epic Records.
- FMQB.com, December 10, 2012, "It's Official: Joel Klaiman Named Columbia Records EVP/GM"
- File:Taylor Swift- Love Story. Top 40 Billboard.jpg Billboard Magazine - Feb 28, 2009. Pg 44
- Trust, Gary (2012-05-23). "Carly Rae Jepsen Jumps to No. 2 on Hot 100, Gotye Still No. 1". Billboard (Nielson Business Media, Inc). Retrieved 2012-05-23.