Question from an Undergrad

I am a 4th year civil engineering student. I am not so sure what to do or where to go after my school days. I am planning to take an accreditation to be a materials engineer, but i want to be a geotechnical engineer as well (don't know if there is another accreditation or something for this specialization of a civil engineer, i am thinking of further post graduate studies). What do you suggest i do? i am really looking for a path to take right now. Thank you! 😀