Some employers will love seeing a CV with just a few long-term roles on there, rather than a CV packed with different roles and experiences. Why you ask? Well, it tells them that you’re loyal and in it for the long haul. That said, other employers will like to see a CV with many different roles and experiences, this can tell them that the individual is not the type to get comfortable, and is an individual who will do anything and everything to develop and pick up more skills.
When you’re young, so let’s say 18-25, you’re likely to move about a little before you find the job that’s right for you. You won’t know where you’re heading and what you want to do if you don’t get out there and work at different companies. You can build confidence this way, and combine all of the things you’ve learned and dealt with to push forward.
If you have a CV with lots of short-term jobs and gaps, this can be problem, but only if you’re unable to explain why you took the route you did. Was you doing work experience at that time? Was you taking time out to travel? There may be good reasons for gaps, but they’re always explainable and so too are short-term positions. Just don’t make a habit out of moving, because if it’s still the case when you’re 30, questions may be asked.