I am a graduate from computer science and working in Bay Area on L1 , Which partime ms will be good for carrier or should I opt for mba?
If you get a good job after a Bachelor's in CS degree, I will recommend you to try MBA at a Top-5 college once you gain godly job experience. Considering you are already staying in US or not interested in research, I don't see a reason for Masters. You can try becoming a CFA while doing job. Also, participate in things like "Global Shapers", "Toastmasters". It will strengthen your profile for MBA application. A MBA even from a Tier2 college is not worth the cost and time, your tech degree is better.
What are your goals? This is an impossible question to answer without more info.