I am a front-end developer and I myself need some assistance from time to time. Projects that I initiate are not that big, but they compose a very important part of the final result. Usually, for accomplishing them I hire freelancers and the best platform is JointoHire.com: with their small drawbacks, they really do great, guys! Every time, I get satisfied with their results. So, far I have worked with two freelancers, one was Andrew Joseph and Daniel Kask. The first worked for $28/hour and the latter for $20/hour. I think they charged quite reasonably and their service was extra good. Highly recommended!