Since 1993 I'm developing software for accounting, fixed assets, human resources, stock management, inventory, production in several kind of database engines used among time, such as dBase IV, FoxPro, Postgresql, and since this year MS-SQL.
For last ten years I was develop an ERP system used on a retail chain of shops, managing a network with 35 desktops/servers, spread into 7 locations, each one having one linux server with postgresql, 1 to 5 POS with frontend app, creditcard POS Vx510 and fiscal printer/cashregister, Bizerba or Digi weighing scales, 1 to 15 backoffice workstations with CRM, SRM, fixed assets, hr.
Those facts - I think - could be a demonstration about my skills.
If you consider this relevant for your job, let's go transform your old application.
My idea looks like this:
one server SQL MS-SQL or if you prefer, could be Open-source PostgreSQL whose performance is similar or even higher than microsoft's product, at a lower price (exactly 0$).
several (...actually how many are installed now....) workstations with Borland Delphi (or, if you like, it's open-source FreePascal/Lazarus at 0$ license costs).
That could be done if I can see or test a while the old application and it's facilities/automations.
If you consider, I can give detailed info on your request, so please contact me...
Kindly regards,
Dan Minciu