Hi there, I'm Matt Sergei (call me Matt, please) and can help you (26 years an IT developer).
What does your bash script do? It can be changed to:
1. AppleScript => application.
2. Python script => application.
3. Node.js => application.
And this is more a task for a fixed rate (based on complexity from 100 USD and above).
Regards and hope you are safe,
Matt