Check first if your existing contract allows you to transfer to another company without the need for an NOC then you can regularly check vacancies under www.gulf-times.com and post your cv here in QL... as already stated...you can also try jobsites like bayt.com or gulf talents..key resources..etc.. if you can get hold of qatar business directory, then use the info about the websites of the various business and industries then try your luck applying on-line.. goodluck.