Hi
You need to find an employer first.........
Assuming that the OP is apply for an open work permit under the IEC, s/he doesn't require an employer. The Letter of Introduction is supposed valid for admission for 1 year, BUT there have been a couple of people on other forums who haven't got the full year. Since it takes about 2 months to process an IEC, Nov/Dec should be fine, That is if there are any left for this year. You may have to wait until January/12 to apply.