I wrote and executed a full load test suite for a high-traffic Magento store. We successfully emulated up to 5 orders per second, caught major performance bugs from release to release, and fine-tuned MySQL in AWS's RDS for peak write throughput.
A fresh store concept, Squix sells boxes with super-effective cleaning products, on a subscription basis. I led development of a 4-6 man team. We delivered on Magento Enterprise, with a full NetSuite integration, custom product recommendations and a nifty integratoin with an email automation tool.