As you want to get the details of career after M.Sc Mathematics so here is the information of the same for you:

Government Sector Jobs after M.Sc Mathematics:
Several other jobs available for these graduates in government sector are given below

Quantitative Risk Analyst
Equity Quantitative Analyst
Director Statistical Programming
Interest Rate Trading Strategist
Director Statistical Programming
Quantitative Developer
Treasury Management Specialist
Statistician
Researcher and Accountant
Demographer

Job Prospects Abroad after M.Sc Mathematics:
There are several job opportunities available for M.Sc Mathematics graduates in foreign countries. They can look for jobs in several research organizations and laboratories in foreign countries.