проработав несколько лет на заводе,

проработав несколько лет на заводе,Петр накопил большой опыт

Результаты (английский) 1:

After working for several years at the plant, Peter has extensive experience

Результаты (английский) 2:

worked for several years at the plant, Peter has extensive experience

Результаты (английский) 3:

After a few years in the factory,Jake has accumulated a lot of experience