Hello there!
I am a french native translator, web developer and writer.
For the last 3 years, I've been working with a German, a Spanish and 2 Chinese companies as their transaltor/review writer.
I can write the user manual (PDF) for the 25 modules of your web app in english (and french if needed).
If you have any questions, feel free to get in touch.
Best regards,
Yassine