(c) German-English dictionary:
* Prüfung (noun feminine; from [verb] prüfen [to examine] + [suffix] -ung [-ing: form noun from verb]): "a test or examination" https://en.wiktionary.org/wiki/Prüfung
* In German language: Deutsch (n; definition: German language); deutsch (adj: German, of Germany); Deutscher (noun masculine: male German; feminine form: Deutsche).
* akademisch (adj): "academic" https://en.wiktionary.org/wiki/akademisch
So, how do both adjectives deutsch and akademisch end with "er" here? See German adjectives https://en.wikipedia.org/wiki/German_adjectives
Because Dienst (see below) is a noun masculine, the suffix "er" is added to (both) adjectives.