Specific questions about Berlin

My husband is partway through the interview process for a teaching position in an international school in Berlin, but they don't have a vacancy in EAL, so I'm putting out feelers for other opportunities in case he gets offered the job. I've already read the Wiki about Germany, and all of the general info about finding jobs, and I've done my own research online, as well as reading through all posts on here from the last couple of years about Germany, but I have a couple of questions that are specific to my situation that I haven't been able to answer.

I'm a UK citizen and I've been teaching French and EAL in international schools in Asia for the last 9 years. I have a PGCE, QTS, and CELTA, and have almost finished an MA in Applied English (60 credits each of TESOL, Linguistics and Literature). I also speak German at about B2 level. I've only ever taught in UK and international secondary schools, but I'm open to teaching adults.

My German isn't currently fluent enough to teach in German state schools, so that's not an option. I know about the companies like Berlitz etc, and I'm looking into them, but there's nothing on the Wiki about university or vocational college jobs in Germany. Can anyone suggest any additional places to look for jobs in Berlin, outside of the links on the Wiki?