Many IITians target a coding job or a job in the IT sector be it CS or non-CS students. This is somewhat easy for CS students as they are in direct contact with computer science courses and have enough knowledge of the same. So, what should Non-CS students do to get IT or coding jobs?
Non-CS students can do the Data Structures course as an open course. This course will mar you somewhat suitable for Software Engineering roles and interviews. The knowledge acquired through these courses is more than enough to clear the interview successfully. The next step is to determine what CGPA will get you what kind of job.
Extracurriculars hardly matter in the IT industry unless you are targeting HUL or ITC.
For Finance jobs, the Probability and Stochastic Processes course in the 4th semester is a good choice.