Now a days, so many students are asking similar questions about career prospects in Mathematics. Its a very interesting field having various career options. Firstly you have to decide where you want to make your career. What unique skills you are having. Choosing a right career option should be purely on the basis of our interest and passion to do something. So analyse yourself and then decide where you want to move yourself.
Common job profiles of students after completing Graduation in Mathematics include:

Statistician, Research Analyst, Operations Analyst, Data Analyst, Business Analyst and Finance Analyst. Numerical Analyst, Mathematician etc