Cover letters are typically not required unless the advertising company specifically requests one. If you want to show a potential employer just how serious your interest is in the position, please do send them a cover letter adapted to the specific job you are interested in along with your CV. Read the recommendations for writing an effective cover letter. Example cover letters in a variety of languages are available on the website to inspire you. We do not recommend copying them word-for-word. Rule No. 1 when writing a CV says that every cover letter should be specifically adapted to the position you are applying for and the company offering the job.
Instead of a cover letter, you can fill out an accompanying letter when responding. Enter a short text into the specified box indicating what interested you about the job, your applicable experience, the level at which you have mastered the required skills and what you can bring to the table for the company.