NRG Power Trading

A friend who works at NRG in Houston recommended I apply for their open RT desk role but I am trying to get a read on how their shop runs. I've asked him but obviously he's a bit biased.. I currently have about 2 years of RT desk experience at a mid sized shop in NYC and an EE/CS background. Longer term I’m more interested in analytics/prop trading - trading DA, or potentially FTRs than pure ops or asset management type roles. My role at the moment is a mixture of analytics/modeling for our DA desk as well as RT operations + a bit of RT trading (but not much). The reason I'd consider leaving is our DA desk isn't necessarily super successful at pure trading, so I don't really have the greatest learning opportunities. Anything outside of power fundamentals (i.e. how to do quantitative research + build models), I have learned myself/from school which concerns me.

What is NRG’s general reputation/vibe, and is it a place where people can actually move from RT/ops-heavy work into more analytical or cash/risk-taking seats? Do they have people who focus more on quantitative analytics? Curious whether it would be a good learning platform or mainly an operational shop.

Also, would working at a big shop like that viewed more positively by future employers than working at a mid size shop like my own?

Thanks in advance