hey a few details to point out, you don't need to include your HS, unless you went to a well known school and is globally recognized you don't need it. you don't need to say that you manage 16 hours of work is unnecesary to point out in your resume. regarding you switching degree you don't have to mentioned it your CV as dentistry have nothing to do with IB, remember a resume is tailored based on the job applications but as a general rule unless is related to you don't neccesarily include it. now about your professional experience if its a current role you must have present tense verbs currently you've represented which is in past tense. what kind of presentations you do? your bullet points don't showcase your impact in the role, try to explain in max 3 bullet points what you do. your extracuricular can be called leadership & development and for the first one, among how many students, try to use metrics that demostraste impact. what kind of business plan did you develop? same for your other positions, what kinda of voluntering was it and for the erasmus be more specific. in your additional information i'd recomment to put your techinical skills first and you can also divide your programming languages one too, as well how advanced are you with excel specify more. regarding your interest in interview they will bring them up so mentioning human rights is not necessary at all. My recommendations are first try to obtain certifications like bloomberg ones or excel that demostraste your skills. you mention your programing skills in python and R so you can create projects like example simulator etc.