All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
If you are obliged to continue in that job and you can not find another work where you perform Jumah prayer without trouble, in this case you have a legal excuse not to perform Jumah prayer. But, you are obliged to perform Zuhr prayer instead, four Rakah.
We advise you to find another job where you can carry out your Shariah obligations, since the obligations of Shariah are more important than other matters. For more details, please refer to the Fatwas:
Allah knows best.