Not my company personally (which is a development house), but another company asked me to recommend junior contractors for a single 6 month contract (no idea if there are future opportunities or not) in the Randburg area. I mentioned all the juniors I know are all seniors or managers now, hence the thread.
However, if you or anyone else are looking I can put you in contact with the company's HR department if you PM me.
I also do-not know where you should look, but can offer my services if it's Silverlight stuff (not junior though).
May get some results by putting an ad on gumtree.