Fraudulent or misleading uses or content, including:
Requesting or demanding free services, including requesting Freelancers to submit work as part of the proposal process for very little or no money or posting contests in which Freelancers submit work with no or very little pay, and only the winning submission is paid the full amount;
Also it includes:
If you become aware of any violation of these Site Terms or Use, you must immediately report it to Customer Service.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I'd say it may work out outside the platform, but upwork is about on demand services so no regular job security and perks.
Also, Upwork's TOS explicitly prohibits it:
upwork.com/legal#examplesof
Also it includes: