opinion it is actually harder to get a job in an institution you are currently working (or studying) at than a new one. This is for the very simply reason that you already work there so why would they offer you a new post and lose out on getting another person - you're going to stay anyway, aren't you? So, look elsewhere for jobs - this means you have to be prepared to move, although it doesn't mean you need to move anywhere. Think of places you'd like to work and live - you might not get a job there but you can at least keep an eye out for opportunities. On the day enthusiasm is a must. Preparation is also crucial for the interview. Make sure you know what the department is actually about and how you can fit into it (i.e. what you bring to it, not what it can do for you). Moreover, don't be presumptive just because they've invited you for an interview; do your homework and realize that job applications and interviews require a bit of work. Apply for jobs every couple of years as it will keep you sharp and in the loop. Even if you don't want to leave your job, it might be a good idea to remind the management that other places value you. This means keeping an up-to-date CV and cover letter.