Hi,
i am an sugarcrm and suitecrm expert with years of experience in implementation and configuration for both. i have also got extensive experience with custom module development and customizations of existing modules.
you can leverage my experience to get you modules developed easily and quickly. as you have mentioned that you need to add Purchase Order, Purchase Request Module and need to customize Invoice module and need a gantt chart for something, so i can build all of these quickly and reliably for you but please make sure to provide clear and complete specifications.
Regards
Haris
Regards
Haris