efinancialcareers is a good place to start looking for accounting jobs. If you do a search by location - Germany and then Bavaria there a plenty of jobs around. If there are none that take your fancy listed then look at the websites of the recruitment firms that have placed the ads.
What the Germans call 'Controlling' is essentially financial accountant in a normal business. They don't seem to have the equivalent qualification of what in the UK is CIMA (Chartered Management Accountant) here so not sure what training is usual in a German firm.
In your general accounting firms there isn't really the equivalent of the UK's ACA or US's CPA. Instead they have Steurberater (tax advisor) which is a waste of time, completely non commercial and teaches you nothing about accounting but everyone does it because it's a title and they love that over here. Once this has been achieved then you are allowed to study for the Wirtschaftsprüfer which is a qualification to say you can audit. Again this is non-commercial, very technical in the sense they can quote German commercial law at you and teaches the holder nothing about proper finance. Some departments of some firms are now allowing people to study for the ACCA (Certified Chartered Accoutant - somewhere between CIMA and ACA) which is more commercial and can be used in the real world as well as in an accounting firm.
To get work at a general accounting firm I would say a willingness to learn German and throw yourself in is essential, maybe more so initially than your actual german ability. I would give the larger firms' (PwC, KPMG, E&Y, Deloitte, Grant Thornton, BDO, PKF) HR departments a call and just ask what positions are available and what are the requirements- or look on their websites.
Hope this makes some sense and good luck