In response to the question about whether working in factories that manufacture canned pork and in nightclubs or other centers of corruption is permissible or not, Ayatullah Khamenei says:

Making a living off of haram acts such as selling pork, liquor, establishing or managing nightclubs, centers of corruption and gambling and drinking and the like, is impermissible and the money made from such is haram and one who receives money from it, doesn’t become owner of the money.[1]

As for your second question, Imam Khomeini replies:

Question: Is the employment of Muslims in Jewish companies and institutes, knowing that they aid Israel, permissible or not? What if we don’t know if they aid Israel or not and receive our salary on a daily basis?

Answer: Employment isn't permissible. The money they receive from working there is also haram, and in the case of uncertainty, they shouldn’t go into these institutes.[2]