Praise be to Allah.
What we think is that you should tell the woman to whom you want to propose about your contract with the company and what you intend to do, because people may have different attitudes regarding such matters. Perhaps the woman will accept that, or her guardians will accept for her to marry you, because they think that you will continue in this job, which will guarantee you a good income, and if they knew that your work there is temporary, or they knew that you want to leave it, perhaps they would not accept that situation.
You may be rewarded for that too, if you intend thereby to show sincerity towards the woman, so that she will agree to marry with full awareness of the situation.
But if she asks you, in that case you must tell her the truth and not deceive her.
It was narrated from Abu Hurayrah that the Messenger of Allah (blessings and peace of Allah be upon him) said: “Whoever bears weapons against us is not one of us, and whoever deceives us is not one of us.” Narrated by Muslim (164).
And Allah knows best.