In general, yes, it tends to be looked down on, particularly if it's most of your history. Obviously there are exceptions, but as a general rule, people will

In general, yes, it tends to be looked down on, particularly if it's most of your history. Obviously there are exceptions, but as a general rule, people will assume you are contracting because you could not get a full time position. This is more true at big tech firms that don't hire contractors for "core" engineering roles.