Unless you will be providing a service that nobody else is, I fear you stand little chance of employment due to the present state of the economy;if there are any jobs going they will go to Spanish workers first. Even highly qualified people cannot get work.This is the worst time to come looking for work.
Hope you have researched the healthcare tax implications of living in Spain if you are not retired, and meet the criteria for becoming resident which is much stricter now, especially regarding your financial status.
You might stand a chance on an urbanisation of mainly Brits,eg supermarket, hairdressers etc. Best thing is to distribute your CV among local businesses and wait!