Assuming you are coming to back to Doha with a valid Visa, you will have no problem entering Qatar but the problem will arise when YOU WILL EXIT DOHA.
Your details (from passport/ QID) will be in the immigration watch list for hold departure once the bank has filed a case against you.
When you arrive here and found a job better check with the bank for your repayment and if the bank has not filed a case against you yet and there is no hold departure on you then you can still exit doha.
Assuming you are coming to back to Doha with a valid Visa, you will have no problem entering Qatar but the problem will arise when YOU WILL EXIT DOHA.
Your details (from passport/ QID) will be in the immigration watch list for hold departure once the bank has filed a case against you.
When you arrive here and found a job better check with the bank for your repayment and if the bank has not filed a case against you yet and there is no hold departure on you then you can still exit doha.