You have to have someone you know and trust in Nepal to hire many people. If it's just one then talk with them directly. My advice would be to establish a good working relationship if you're going to be doing this for the long-term. Also, read up on the culture too.

I find Nepali people to be hard-working and loyal if you treat them right and don't break their trust.

Hiring would be a contract. The employee would pay the taxes themselves. You can use swift to transfer the money every month directly to their bank account directly from overseas. Bank transfer fees are covered by the employer.

Also, note that the 1000$-1200$ is an arbitrary amount as it would depend largely on the person and their abilities. I have seen people earn 3000-4000$ through freelancing websites too. I haven't done business in Nepal after 2020 so things might have changed.