[6] His consulting work on major corporate events with clients included: Anheuser-Busch,[7] Michelin, Electrolux, American Express and Xerox.

As a young boy, he enjoyed trips to Radio City Music Hall with his uncle as he became more and more fascinated with theatre, especially lighting and set design.

Fiorentino recalls, “The man called back later and said, ‘I can hire you as a lighting director for television.’ I said, ‘Who's going to teach me?’ He said, ‘Nobody's going to teach you.’ I said, ‘Well, how will I know if it's right?’ He said, ‘If it looks good, remember how you did it.’ I started the next day.”[8] Fiorentino’s lighting career began during the “Golden Age” of television, when his TV credits included Omnibus, U.S. Steel Hour, The Voice of Firestone, Pulitzer Prize Playhouse, and the Bolshoi Ballet’s first televised appearance in the U.S.[9] Broadcasts were still in black and white.

Fiorentino worked with such directors in those early years of television as Sidney Lumet, John Frankenheimer, Charles Dubin and Alex Segal.

Lighting designers from various networks came to work at IFA such as Fred McKinnon, George Reisenberger, Ken Palius, Leard Davis, William Knight, William Klages, Greg Brunton, Carl Vitelli, Richard Weiss, Carl Gibson, Stig Edgren, Tony DiGirolamo, Alan Adelman, Robert Dickinson, Vince Cilurzo, Jim Tetlow, Marilyn Lowey, John Conti, Jeff Calderon, and Jeff Engle.

[10] Fiorentino actively participated in the artistic as well as company management, leadership and direction and took great pride in helping to guide the many unique projects that came through their doors.

Fiorentino's creativity was evidenced by his participation as leader of the IFA team serving as design and lighting consultants for fourteen Democratic and Republican National Conventions.

Additionally, his credits include: Frank Sinatra - The Main Event, televised live from Madison Square Garden, El Cordobes: The Bullfight of the Century, transmitted live from Spain to 28 countries via satellite, the historic mass audience rock concert event, California Jam and the Broadway show, The Night That Made America Famous.

He has served as consultant to every U.S. President since Dwight D. Eisenhower,[9] and to a multitude of major political candidates in television appearances and campaigns, as well as numerous Presidential Debates.

In 1996, Caribiner International acquired IFA and Imero Fiorentino joined the global communications company as Senior Vice President.