Ask HN: Good sources to find part-time contract work?

I have been having trouble finding a new web dev job for a while, but recently luck fell in my favor and found a new contract job I'm enjoying. This job sort of fell on my lap, rather effortlessly compared to other job interviews I've had. It's also not web dev related, and in a language I've wanted to get professional experience in (C#).

It's also a part-time job which makes my current situation interesting. I'd like to supplant it with another contract job as otherwise I'm not being paid well enough as I would as a full-time contractor. So I have a few months till this contract expires, and ideally I'd like to get a second part-time contract (preferably also in C#) to fill the rest of my time.

Where should I go to get another part time programming job like this? I know part-time is not very common in software development. Am I required to take a more freelancer approach to this? I also don't want to use those freelance job sites that create a race to the bottom in price and quality due to global competition.