Can we specify Isolation level for Job or Linked server

Hi,

We have a job that have 40 steps and we are running stored procedures that have queries referring other server/database using linked servers , we need to run the job in read uncommitted isolation level so before we add "read uncommited" in all procedures we were wondering if any of the following option is possible:

Is it possible to specify the isolation level at job level so all the steps run under this isolation level (I doubt this is possible)

If we can't specify at job level, is it possible to specify at linked server level so all connections to other server use read uncommitted.