The first interview is with human resources. They contacted me within a week to organise a second meeting with the direct supervisor and to make a technical test. The interview with human resources is quite standard. It lasted 30-40 minutes. They mainly want to test your communication skills and check that your profile and expectations matches what the company is looking for. The interview with the supervisor mainly consists in him explaining your (future) tasks and you explaining your background and expectations. It lasted 30-40 minutes. The technical test is an email test customised for the company and role that is reviewed by the direct supervisor afterwards. It lasted an hour.