Several questions regarding quant Fixed Income and fundamental FI

I just entered a fundamental FI fund as a quant analyst cuz I graduate with math finance background. I’m a bit unsure of my career progression. May I ask several questions here:
1. For fundamental credit, they can hire new analyst to cover more book. But in the rates team, I observed it’s the head PM who is speaking macro view and makes decisions. How can other members under the rates team expand the role? Especially for me as a quant in a fundamental shop…Is possible to do macro quant stuff like building quant strategies to capture bond risk premium as mentioned in book expected return? Rates investing can not be that quant/HFT at all like qe, quant credit, right?
2. How are people doing with quant credit today? What kinda strategy is used in ur firm/hedge fund?
3. For quant research (like qe) in general at a quant fund, what is the role for each level (analyst -> associate -> vp)? Is it like at first they just clean data, then just everyday doing research of new models and backtesting, and presenting ur model?