As we have just seen, you can also transition into a work permit through a residence modification.
That is the best alternative for those individuals who have enough savings to stay one year abroad (in Spain) but then would like to continue working in order to earn a living. 
In that case, you can spend part of your last non-lucrative months searching for a job in the country. Once you find it, the procedure for your employer will be easy. Why? Because you already possess an authorization to live.
He or she will just need to present an authorization to make you able to work in the country. That will grant you an authorization to live and work in Spain for two additional years. 
But you can also transition into a work permit as a self-employed individual, so you don’t work for anyone but for yourself. You would then become “autónomo” in the country. 

Non-lucrative visa modification to work permit image
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