Can I have a mortgages in Spain get a permanent contract
Temporary contract sufficient for a mortgage application in Spain
Yes, this is possible, provided you can provide demonstrable income from 2 years before the application as well as salary slips from the past 3 months.
If you work in an industry or profession that is seen as sought-after (current profession), the affiliated experts at holapedro can help represent you at a Spanish bank. This way, you may be able to get a preferential position.