The background:
So, I'm starting a new role in a month or so managing a development/support/test team of about 12 in a software house.
While there is a Director of Technology in place he's not been involved with the team day to day for some while (it's a small company and he's involved in a lot of other things, strategy, pre-sales consultancy and is out of the office a lot) so the team has effectively been self managing for some time.
From what I understand they've doing most of the basics right (automated build, source control, bug tracking all in place, hitting release schedules though by the sound of things there's a fair bit of overtime contributing) but there are going to be things which need improving.
There are senior developers in place each of whom look after one area and three or so staff and apparently they (or at least some of them) have said they want a manager - and didn't want the job themselves. According to the Director of Technology there are no significant issues there but they have growth plans and feel that it's time to have someone in there.
I've run development teams before, read peopleware, been a developer for a decade, know the joel test and know what a working team looks like and what it should be doing.
My concern is that as this that the first few weeks are key to whether any of that will actually matter - get off to the wrong start and it doesn't matter how good you are, it's going to be an uphill battle. Do too little and you're seen as ineffective, do too much and you're seen as meddling.
So, to make this a solid question (or two):
1) What one or two things should I absolutely do in the first fortnight?
2) What one or two things should I absolutely not do in the first fortnight?
Thanks in advance (and apologies if it's too subjective).