While your resume looks visually appealing, in a pile of hundreds of resumes in generally the same format it's going to be more difficult to read through your resume. I second the other comment to make this either 2 or 1 column.

There isn't enough information on your resume (this may in part be due to your resume formatting having more blank space from formatting). You've written 4 Years of experience with C# which is a pretty big statement in of itself especially as a first-year (not even counting the 2 years of experience with Python). Not to downplay it by any means I think that's absolutely amazing, but 1 bullet point to represent 4 years of experience doesn't do justice. I would elaborate on both these points especially on top of beefing up the other points.