Hi
SAS2019,
Thank you for your post. It's great to hear about your international experience and active involvement in areas about which you are passionate.
Observationally, I would encourage you to try to improve your GMAT score. As a an example, the average GMAT score for NUS's part-time program is 635, which unfortunately puts your current score below competitive range. This is even more pronounced when we consider how crowded and competitive the pool is for Indian applicants. The "Indian male applicant" side is even more crowded, but I would still encourage you to target a GMAT score that is 20 to 30 points above the average for whatever schools you're interested in. (That doesn't get you in, of course, but it can "neutralize" the GMAT, after which you will need to differentiate yourself through your applications, essays, resume, recommendations, etc.)
I would also encourage you to conduct further research into these programs and others to ensure that they align with your professional standing, work experience, and career interests. IESE's Executive Program, for example, tends to target students who are more "mid-career", so you might be a few years early for a program like that. Finally, please be sure to research the various visa considerations associated with these. As part-time programs, they won't necessarily offer the requisite sponsorship. But that can vary from country to country, and program to program, so please do your due diligence!
I wish you the best of luck!!
Kind Regards,
Greg