Our team worked on the eCommerce part of this project. We have integrated Satchmo django plugin into the existing platform. The project itself was built without any kind of eCommerce functionality so that was quite challenging to add that. The main challenges we have faced: Legacy code. The project is old and many developers worked on it. This leaded to quite complex architectural solutions and sometimes poor quality of code. Custom requirements. Satchmo framework we used didn't fit perfectly to the project requirements and we had to customize it. It was quite difficult and required deep understanding of the framework. Timelines. Our team had limited resources and time frame to fulfill requirements. We had to be very careful with what we do to make it right first time. Another important piece of this project was communication. The client location was Australia which is 7 hours ahead of Ukraine (where our team is located). However, we were able to manage timezone difference by scheduling regular meetings. This allowed us to prepare to each of them and be very productive during the meeting.The technologies used on project are: Python&Django as main backend framework Satchmo as an eCommerce engine Celery+RabbitMQ as a background task processor