Looking for a new job, but want to be picky

I am in the process of looking for a new job (I am a senior software engineer - web related mostly).

Now there are websites like linkedin but i find all the jobs there not really interesting. What other job search sites are there? I would love to be able to enter my interests and skills and get a list of companies that could be a match. Or enter a list of companies i like and find similar.

For example I would like to work in the space industry but i find it hard to find all companies, big or small.