Absolutely! In fact, if you have a stellar track-record, you could even apply whilst you complete your Bachelor's (see below). Leave the Bureaucracy to us.

Masters: While we do not have restrictions on your current semester of study, especially for candidates with strong academic background or experience in research, most applicants find more success applying in their final year of studies. 
Bachelors: You do have to have a completed degree or be in your last semester.

We only accept applications in German and English.

Applications usually take up to a month to process but, circumstantially, can go until two months or more.

This depends on the post. For research positions, there are either (a) General Calls - e.g. for PhD students, internships and Tenure-Track Faculty - that have deadlines in their respective description. In addition, you will find (b) positions that are dedicated to a specific research group. Once all the open positions are filled, the offer will be taken offline.
For jobs in science support, administration or infrastructure, there are always dedicated posts, sometimes with and sometimes without deadlines.

Of course! Please note, however, that applications for the same position within 3 months of rejections are not considered but you can apply for a different position and it will be assessed independently of your previous applications. 

It may differ position to position, but almost all require your CV, cover letter, transcript of records / degree certificates & enrollment certificate (e.g., for PhD students)

For the initial stages of our screening process, unofficial documents are also accepted such as a scan or a screenshot. However, official documents or proper copies therefore will be required by our HR department should a Faculty or Department Head decide to move forward with hiring.

It is not a mandatory field in the form so you may choose to upload as many or none at all.

It depends on prospective supervisor (Faculty or Department Head) whether they wish to reach out to your references. We will not reach out to someone who you did not suggest yourself.

Yes.