Refining the online store on Bitrix

The level of PHP programming and knowledge of bitrix is not lower than the middle, preferably senior.
It is necessary to make a number of improvements, for example, to refine the basket, personal office, service of determining the addresses of the warehouse and delivery. Integration with 1c et al.

You should have experience of integrating with 1c and customizing complex services.
Deal through the safe. You have at least 20 reviews.