Our department is expanding and I was encouraged to apply for a new team lead position, which I was hinted as the primary (perhaps even the sole?) candidate for.
We have had an informal interview where we talked about my competencies, ambitions, potential areas for growth, risks and opportunities etc. They reiterated and detailed the expectations and increased/changed responsibilities it would entail for me.
So far, so good... However, it appears that the bump in salary is rather minuscule (got no specifics but based on my conversations with others in the company, I expect it will land around 5%). We've put the specifics aside for the time being as before an offer is put on the table in front of me, there are some paperwork that needs to be cleared (both the HR and the trade union needs to approve).
I am thinking if I can negotiate/reason a bit around that, I realise I won't get a 25-30% increase, as it does not appear to be against the company policy for internal hires. (I hear this is common for large multinational companies)
However, considering that it would be MAJOR headache for them to find another person with my skillset (PhD + relevant work experience) and insight into exactly what we do, with the ambitious expectations that the dept has set out for this year. Thus, I would think they would probably not make a hassle out of a couple of hundred bucks more per month.
What are some good arguments to put forth to make sure I get the best deal I can possibly get, without antagonising the dept head from day 1?
Alternatively, if a more satisfactory salary increase is not an option, what alternatives can I put on the table that might be more amenable?