I want to work in foreign trade in the future.

Literal

I [topic-は] future, foreign-trade [object-を] want-to-do.

将来 ('in the future') is a time adverb. 外国貿易 ('foreign trade') — 外国 ('foreign country') + 貿易 ('trade'). やりたい = やる + ~たい. A straightforward expression of career ambition.