Hello,
I have a lot of experience with customisation and modules development for Odoo ERP (from v10 to v14).
That basically concerned to modules of sales, invoicing, website, web sales, payments (a lot of experience with different payment gateways integrations), POS, integration with other systems (telephony, marketplaces etc.) and deep customisations of basic Odoo (development of new fields and widgets, core widgets and forms modiffications etc.), but projects, events, stock, delivery and mrp modules also.
I have done a lot of projects like this with varying complexity: low (simple customization of standard modules or reports), medium (create new modules for extend standard functionality) or high (create web portal, customize web store etc.)
I like to customize and develop modules for Odoo, I do it well, quickly and very high quality.
So I think I can help you.
If you are interested, feel free to contact with me to discuss details.
Thanks,
Max.