You can use the following website to find jobs for English-speaking professionals in Italy:
A bi-monthly publication in English, EasyMilano, also has some job listings and can also be used to post an ad seeking work. And don’t forget about the worldwide social network for professionals, LinkedIn, which is widely used in Milano, and which has lots of job listings, both in English and Italian.
Other very popular job websites are exclusively in Italian, but with English in some job titles or descriptions. If you’re just a beginner, you can browse them with a friend who speaks Italian until you learn how to navigate. Be sure to check out the vacancies and the career articles.