Gathering software requirements using interviews, documents analysis, use cases and workflow analysis. Django, Celery, RabbitMQ, Django REST framework, AngularJS, JSON, Selenium, uWSGI, PyGraphviz, Salesforce API, Twilio API, REST, Vagrant, Chef, Codeigniter/Kohana, REST Webservice, AWS, Memcached, Amazon AWS, AJAX, REST, Curl, Oauth, XML/XSLT, PostgreSQL, MySQL, Sublime Text