Though Permadi had demonstrated impressive ability by 1990, he was often passed over in selection for international competition at a time when Indonesia had elite world class singles players such as Ardy Wiranata, Alan Budikusuma, Joko Suprianto, Hariyanto Arbi, and Hermawan Susanto.

Moving to Taiwan in the middle of the decade, Permadi played perhaps his best badminton in the late 1990s, after his thirtieth birthday.

He won a number of significant international titles (as shown by the chart below), and at thirty-one was runner-up to China's Sun Jun at the 1999 IBF World Championships.

He competed for Chinese Taipei at the 2000 Summer Olympics in the badminton men's singles event.

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