He is the current editor-in-chief and anchorman of Jornal Nacional, the most-watched Brazilian news program, aired by TV Globo.

In 1985, he started working at Radio USPFM and was eventually hired as announcer and television host on TV Bandeirantes until June 1986.

He then moved to Rede Globo, assigned as editor and presenter of SPTV, a São Paulo local news program and, later, host of Fantástico.

Since April 1996, after Cid Moreira and Sergio Chapelin left their positions, Bonner became lead anchor and, later, editor-in-chief of Jornal Nacional, Globo's main weekly news program, alongside Fátima Bernardes, Patrícia Poeta and, currently, Renata Vasconcellos.

Bonner met Fátima Bernardes when they were the main newscasters of SPTV in 1986; they married in 1990 and had triplets: Beatriz, Laura, and Vinicius in 1997.