Complete Custom Accounts Program

I'm looking for an experienced developer to finish off a custom-made accounts program running on Windows. The program is nearly complete but needs some critical functionalities added and updates to align with the latest trends.

Key Requirements:
- Reporting Features: Develop comprehensive financial, sales, and inventory reports.
- Invoicing System: Implement a robust invoicing system.
- Final Configuration: Finish configuring the program for seamless operation.

Ideal Skills and Experience:
- Strong background in accounting software development.
- Proficiency in Windows application development.
- Experience with reporting tools and invoicing systems.
- Ability to update and modernize existing software.

Please provide examples of similar work done.

add easy jod sheet site sheets into a statement like history for the clients
be able to use it on the phone
cloud back
easy instal on a new laptop ETC
work finish of construction like interm record payments, claims and balances , to able to add materila or allocate material cost on the client flier and or on the cas book