Looking for advice: Online Master's in Applied Math for ML while working full-time

Hi everyone,

I'm looking for some honest input from people who've been down this road or know the landscape well.

My background:

• B.Com in Finance & Accounting from Delhi University (2019)
• During Covid somewhat made my way into machine learning by doing self study at home.
• Currently a Senior ML Engineer at a large financial data/tech company in Bengaluru
• Day-to-day work spans around NLP/LLM systems, real-time ML pipelines, distributed data infra, and AWS.

What I'm trying to do: I want to seriously deepen my foundations in applied mathematics for ML — think probability, linear algebra, optimization, statistical learning theory, the actual mathematical machinery behind modern ML rather than just the engineering side. I've been doing ML professionally for a few years now and I keep hitting the ceiling where deeper math intuition would make me significantly better at my job (and at research-leaning problems).

My constraints:

• Can't leave my job. I need a fully online / part-time / WILP-style program.
• Based in India, so an Indian program is ideal (IISc, IIT online degrees, CMI, ISI, BITS, etc, i know getting into top tiers college is very very hard for someone whose background isn't in engineering but still if there's any way they accept non-techincal degree holders, I would like to know more about how one can enrol for such programes)
• Open to foreign universities too if the program is genuinely online and the time zones work out

What I'd love input on:

1. Programs you'd actually recommend (and ones to avoid) for applied math / mathematical ML at the master's level, fully online
2. If anyone has done IIT/IISc online degrees coming from non-technical background in math/stats/ML while working full-time, how was the experience and workload?

Not looking for career change advice happy in my role. Just trying to build deeper foundations the right way. Any pointers appreciated.