I am currently writing a thesis where most of my research is done in python, and I am also comfortable with HTML, json and CSV, as well as Ubuntu - I do all my work on a linux machine. I can do this job quickly and accurately for you. I am a new free-lancer, so I am willing to work for cheaper than usual as well.
I would just like to double-check. If I understand you correctly, you would like a python/html web-interface that the user can access [via html] that interacts with the program you have on your server, and then returns the values, and displays them to the user on their browser? If I have miss-understood you, then please message me with further details.
Thank you
Janco