Try https://toptal.com Once you pass their screening process, you will get jobs in one or two weeks
Something I find rather intimidating about toptal is their top 3% advertising, when I think of top 3% work I think of, say, writing an RFC of a widely used internet protocol, inventing a language and writing its optimizing compiler, automated air traffic control, debugging live code on nuclear reactor SCADA systems, that kind of stuff. I'd be interested in work at a calmer more laid back environment like only top 5%…
[0] http://www.computerworld.com/article/2483690/it-careers/indi...