I need a professional python developer

General information for the business: plagiarism checker software
Kind of development: New program from scratch
Description of requirements/functionality: Assignment
“Make plagiarism checker desktop tool”
Requirements:
Front end (User interface): Make user-friendly front end. (using C# , .Net platform)
Back End : Use Python Language .
Helping Hints : Vector Space Model, Cosine Similarity , Tf-idf ,stop words, Steming,
Input:
 User can input any readable file (.pptx, .docx, .txt, .xlsx, pdf).
 User can also input text.
Output:
 Plagiarism checker takes input file and check similarity with all the files(.pptx, .docx, .txt, .xlsx, pdf) one by one in folder(any drive folder that we use as database)Repository Drive and give output the path and name of file with which the input file is plagiarized the most. Also tell percentage of similarity and print text that is similar in files.
Note: For more Information about this assignment do contact me.
Specific technologies required: python nltk nlp
OS requirements: Windows
Extra notes: