PHP, JavaScript, Node.js, Object Oriented Programming, Socket Programming, Asynchronous Programming, Software Architecture, Database Architecture, Design Patterns, Domain-Driven Design, Scrum, Jira, Mantis, MySQL, MongoDB, SQLite, ElasticSearch, Redis, Amazon DynamoDB, Amazon SQS, Laravel Framework, Zend Framework, Express.js, Socket.io, API Development, API Integration, JSON, SOAP, XML, Postman, Git, BitBucket, GitHub, Apache, Nginx, Docker, Unix, GNU/Linux, Debian, OS X, Zend Studio, Eclipse, PHPStorm, Sublime, Atom, Traktor, Ableton