If you ask the Tachlis mailing list, we should be able to turn you in the right direction. Also, when you start discussing with your new contacts, you can discover additional sources of information and target companies. If you are told that there are no jobs for you there, ask them nicely if they can help you get in touch with other companies or professionals, who could have jobs for you. It is key for a candidate, especially if new in the country, to establish and expand his own professional network. Do not forget to send him your first business card, once you are employed.
Many Israeli companies are visible on the web, both on their own and on other web sites.
You can always make blind calls to companies or to their distributors to better know them. Prepare questions in advance. This is a good opportunity also to test your new network, especially if you are already in Israel. You are not expected to know everything on the company, but you must show that you have done reasonable homework. A. State clearly when you will be available.