An MCA can open routes into software development, testing, databases, analytics, networking, cybersecurity and other IT functions. Employers will still look at practical skills and experience. If your target role involves MCA after BSc Maths, include at least one demonstrable project rather than mentioning the topic only as a skill. This point is specifically relevant to the MCA after BSc Maths aspect of MCA study. For this specific question about MCA after BSc Maths, the practical takeaway is to relate the concept to your own MCA learning goal.