Are you planning to apply for jobs or you just want to look at what classified sites have to offer ?? For jobs there are specific sites and you can google them easily.. same is the case with classifieds... you can find both in forums like this one and others as well... The best classified sites are the ones that are the busyiest..!!
You can try https://meastlist.com/ . They also have dedicated pages for each emirates and also for business directory, jobs, autos, real estate, travel and deals. You can find anything in there. Check it now.