If your Rheumatoid arthritis isn't bad enough to where you're unable to type for hours on a computer keyboard or use a computer mouse then yes you should be able to work.
A friend of mine has rheumatoid arthritis and it's painful for her but thankfully it's not so bad yet where she can't continue to work her office job she loves typing on the computer.
In some cases the rheumatoid arthritis can be so severe and painful where it would be nearly impossible to type on the computer for long periods of time then you should be able to qualify for disability payments.