How can multitasking experience be improved on Android tablets?

I have a 10 inch Nexus tablet that I like to carry around while traveling. I can also connect it to a bluetooth keyboard, and this almost allows me to do everything a laptop can, but there are some major annoyances. For example, I want to do web development while traveling. I can SSH into a remote server and edit the code there, and open the page on the Chrome app. However, Android only lets me have one app open at a time, so whenever I need to switch between two documents, it's very inefficient since I'm constantly closing and re-opening my apps. I would like to use my Nexus 10 as my primary computer for working. How can my multitasking experience be improved?