Hi. I'm a programmer from Russia with strong skills in Python. Here's my offer:
I use Django and Flask frameworks to develop web applications. I work with full stack of technologies from back end to front end.
The application will contain Flask WTF form, which will be tranformed into <form> with <input> tags on the client side. One of the inputs will be <input type="file">.
When a user chooses "Process", the server side will read the requests parameters, such as file attached, and process them and return an answer to the client.
If you need, I can use Grid for responsive design, or stick with usual <div class="row"> paradigm.
If you're interested, feel free to contact me.
All the best,
Sergey.