[6] During his time at Brown, he was a representative for CBS Records, and programmed urban and rock specialty shows for WBRU-FM.

[10][11] He distributed his first single "Join Hands" out of a supermarket shopping cart personally selling over 5,000 copies to independent local record stores.

called Undeas), Changing Faces, Robin S., Fat Joe, Junior Mafia, Artifacts, Jomanda, Double X Posse, Inner Circle, The Bucketheads, Jay Williams, and Quad City DJs.

[12][13][14] Kallman first began working at Atlantic in 1991, when the label acquired Big Beat as a dance and rap imprint.

[15] Upon joining Atlantic, Kallman established his A&R credentials by signing and developing a number of major artists, including P.O.D, Aaliyah, Brandy, and Timbaland.

While holding this position, one of his accomplishments was establishing an alliance with VP, an independent dancehall and reggae record label.

[17] The first collaboration between labels was Sean Paul's album Dutty Rock, which sold six million copies and won a Grammy.

[20] During his time as CEO, Kallman has been responsible for signing notable artists that have included Bruno Mars, Ed Sheeran, Death Cab For Cutie, Trey Songz, Flo Rida, Zac Brown Band, Gnarls Barkley, B.o.B, Janelle Monáe, Wiz Khalifa, Gucci Mane, Cardi B, Nipsey Hussle, Lizzo Halestorm, Hunter Hayes, Fitz and the Tantrums, Charlie Puth, Sturgill Simpson, The War on Drugs,[6] Melanie Martinez, A-Boogie Wit Da Hoodie, Kodak Black, YoungBoy Never Broke Again, Lil Uzi Vert, Roddy Ricch, and Tiesto.

[24] Kallman is also credited with co-writing and producing the 2008 Grammy award-winning song Daydreamin' by Lupe Fiasco.

[25] As an executive producer for television and film, he's worked on Laurel Canyon: A Place in Time, a two-part documentary about the music scene in the Laurel Canyon neighborhood of Los Angeles in the late-1960s and 1970s; Genius: Aretha Franklin, the third season of the National Geographic anthology series; and Love, Lizzo, a documentary about the American singer/rapper/songwriter that streamed on HBO MAX.

In 2010, Craig re-launched his Big Beat label, signing artists such as Skrillex, Icona Pop, Chromeo, Galantis, and Martin Solveig.

[10] In 2023, Kallman and Julie Greenwald, Chairman & CEO of the Atlantic Music Group, were the Grammy Salute to Industry Icons honorees.