He has been refereeing in the J-League since 2008 and has officiated a number of international club and country matches.

Toma's first J-League game was in 2008, when he officiated the match between Omiya Ardija and Jubilo Iwata.

[1] Toma has also officiated in the Asian Champions League.

In November 2011, Toma became the first foreign referee ever to be invited to officiate in a match in England's FA Cup when he was chosen to referee the First Round match between Brentford and Basingstoke Town.

His most notable fixture to date has been a friendly between England and Mexico in 2010.