I agree with Nicole as far as this use of 'work' - I have wroked here for 5 years = I have been working here for 5 years. However, it would not be correct to say "I work on an interesting project at the moment". We would say "I AM workING on an interesting project at the moment". It's not a habitual action, rather a temporary one at the present time. So, you should say "I have been working on the project for the past few months". Unless the verb is stative (e.g. love, want, believe), we use the present perfect progressive to say HOW LONG a continuing action has been happening.

In this case there is not a great deal of difference. Generally: I've worked... = how much experience you have (five months experience, so I know a lot) I've been working... = how long you've been working (five months) So you see, depending on what you are trying to emphasize, you have to chose one.

1. The sentences mean the same thing... there is actually no difference between them in terms of meaning 1. I have worked in my current job since 2009. 2. I have been working at my current job since 2009. both imply that you started the action at a point in the past and the action is continuing until now. I worked at that job in 2009. on the other hand implies that the action is now complete. I used to work there but now I don't hope this is helpful, take care

been is good.

been is good.