I joined at the start of the project as UI lead, my responsibility was User Interface, Public API and creating tools for QA team to make sure it works with required quality.
It's a DevOps automation. User defines requirements for his application and hits the ‘Run’ button. The platform does the rest - prepares machines in the Cloud, installs and runs all needed dependencies and then run the user application in specified environment. It also does lots of other things like monitoring, logging etc.
I also like to spend some time on small experiments, like mobile prototype of the product.
I also worked with QA team and created tools helping ensuring required quality of service using web browser automation and executable specifications.