Long ago, the Israelis invented social and professional networking but called it by a different name - Protekzia (or Vitamin P). It's a well established fact that in Israel, if you want something, need to get something done or be accepted into a specialized fraternity or group, the best way is through a connection. If you want to get into a particular unit in the army you don't do it in the normal way. Your dad's best friend, Moishe, who fought with him in the Yom Kippur War, is now the Minister of Defense. Dad will give him a call, he'll call someone else and organize it. You need root canal work? Your hairdresser's brother is "ne'he'dar" - outstanding - he'll do it for you at a good price. The same is true about getting a job in Israel, do it via your network.
There are many great groups and networks out there. More and more jobs are being advertised in these groups and networks.
These are the professional networking groups, developed by and associated with the Anglo-list, on LinkedIn
Anglo-List: Professional Networking Group for English Speakers in Israel
Haifa Professional Networking Group
Suzanne Suckerman (personal page)
Here are some other professional networking groups on LinkedIn that you may find useful.