Just because of different nomenclature amongst different companies you should write a very brief job description (no more than 2 lines of text in a single - bulleted paragraph). (epiccv.com)
I also recommend providing a «Selected Skills» listing under each position below the brief job description. (bluesteps.com)
Each sample includes a brief job description, credentials and qualifications that will help you understand the job nature and importance of that particular position. (bestsampleresume.com)