Languages
Java, Python, HTML, JavaScript, SQL, HTML5, CSS, CSS3, Sass, C#, C++, C, Scala, Ruby, Less
Frameworks
Django, Django REST Framework, .NET, Ember.js, Ruby on Rails (RoR)
Paradigms
Rapid Prototyping, Object-oriented Programming (OOP), Imperative Programming, KISS, Agile Software Development, Object-oriented Design (OOD), Top-down Programming, Promise, Model View Presenter (MVP), Functional Programming, Model View Controller (MVC), DRY, Pair Programming, Unit Testing, Test Automation, REST, Distributed Computing, Parallel Computing, Responsive Web Design (RWD), Test-driven Development (TDD), Socket Programming, MapReduce, Design Patterns
Other
HTTP, Web App Development, Ajax, Prototyping, Minimum Viable Product (MVP), Ubuntu Server, SMTP, Caching, OAuth, CORS, UI Testing, Lean Startups, Multithreading
Libraries/APIs
Django ORM, Requests, Foursquare API, Facebook API, jQuery, South, Mandrill API, Ember Data
Tools
Celery, GitHub, Git, Sublime Text, Adobe Photoshop, Chef, Vagrant, Gimp, Grunt, Bower, Make
Platforms
Amazon Web Services (AWS), Ubuntu, Google App Engine, Linux, Trigger.io, Meteor, Heroku, Parse, Android, Windows, Mandrill
Storage
PostgreSQL, MongoDB, MySQL, Redis