Contract job with regular course

Just maintain the minimum attendance criterion of your college or see if your college can accommodate you!!

A contract job is not regular employment. If the employee can balance in those two boats, the issue may not bring any complications in the future. Your doubts may be on the validity of the degree. The degree is valid as you are attending a regular course and you will be awarded only depending on your success in the examination. You need not take the doubt seriously, as no one cares as to how you have obtained a degree and considers only merit/marks secured in the examinations only.

Working while learning is no bar. You can definitely accept part-time work without affecting your attendance at the college.