bschool student need advice on FT recruiting

Hey everyone, so I just finished my first year at a T20 MBA program. I had pretty good pre mba experience, two years at an FLDP program in big pharma (think Merck, J&J, etc), then 3 years at a big 3 credit rating agency as a credit analyst. I ended up doing an internship a local PE firm, but looks like it won't go anywhere. I am thinking about options for full time recruiting. How hard would it be for me to get the following roles, and does anyone have any advice on how to break in:

• sell side credit research
• buy side fixed income investing
• equity research
• corporate banking

I understand employers don't formally recruit on campus for these roles, but do you think I have a shot given my pre mba rating agency experience? Any advice on what to focus on to land these roles would be appreciated!

Thanks!