There are two companies that I have seen which offer cleaning services in the way that you suggest;

1. Bonne Menagere ... have heard from personal sources that they are excellent. They find you a cleaner, and charge you the first month's fee. In order for them to make it viable they make the minimum hours 20% ie one day a week (big cleaning job ...). They can also find you a chauffure, nanny, cook ..... you get the picture. Website is not in English:

http://www.bonnemenagere.ch/

2. The second one I saw on a tram and it looks interesting www.putzfrau.ch

In both cases, it will take you a lot to set up (website etc), you will need to pay for advertising to get business going, and if you don't know how to do it yourself, you will pay a fortune for someone to run the administration of the salaries (AHV; BVG ... work permits etc).

If you really want a job why don't you try doing volunteer work for a club or association for a while? If you are good they will notice and help you to find something which pays. I have friends who used this channel very successfully.

Good luck!

Lisa