We are doing an Odoo implementation right now. (a few months in)

What did you find is a mess about Odoo? And why is customizing it a nightmare?

SQL database was a large amount of tables alike and if you try to add a feature that it doesn't implement yet (such as drop shipping capabilities) I couldn't figure it out because its not as simple as creating a new set of forms like in Django you basically have to understand the whole system and I think the task would take a year.

It would have been better to integrate an existing system instead.

Hi, Vanderson. I'm doing the same thing here where I work. I would be interested in sharing experiences. You can contact me via my profile if you'd like to chat more about it. I would say from my part it's been a good choice, but so much complexity to deal with.

I actually have not touched any of the code yet as we are using a 3rd party developer to help us. (I will likely work on templates and other things down the road)

My experience when evaluating Odoo was using Studio, which I have found can really mess up your Odoo instance.

Are you working with Odoo code directly?

No. We are using a 3rd party developer, too. But I'm interested in eventually becoming a developer/consultant for the product. I already do python programming at my current job, too.