Experience with designing and writing Restful APIs.
Third party API's integration.
XML and JSON
working from the command line (OS X or Linux)
Bootstrap
Implement coding best practices and maintain good code organization
Willingness to debate ideas with an aim at finding the best solutions
Increase team skill level in areas of software design and systems architecture
Strong understanding of database design process and query engines.
Develop and maintain best practices across the products
Analyze and resolve technical and application problems
Front-End familiarity - You need to be familiar with front-end work in order to be amazing at the backend. If not your best, HTML, CSS, and Javascript should be your good friends.
Strong knowledge & concepts of OOP, OOD, Design patterns.