Muangthong United F.C.
Amantegui signed for Thai Premier League side Buriram United F.C. on 23 June 2013, moving to fellow league team Army United F.C. for the 2014 campaign. He continued to play at that level in the following years, with Bangkok United FC, Air Force Central FC, Muangthong United F.C. and Samut Prakan City FC.