Admin work to find job titles for 1000 contacts

We have a list of 940 names, organisations, emails, but need each of their job titles finding, and adding as field. So the task would bedone in an excel file and you would be:
1. adding a column for job title
2. adding a column to copy and paste that persons linked in profile
3. learning up the data - highlighting any individuals that according to your research no longer work at the organisation we have them listed at
4. suggesting the new organisations these individuals may work at.

I can send the spreadsheet over from today and we would like the work completing by the end of this week if possible (by Friday 19th)