Solid knowledge on:

• Object-oriented design
• GoF Patterns, DDD, SOLID
• Programming concise, clean, without coupling, easy maintainability, safe and performance.
• Architecture and development of REST APIs
• Complex problem solving
• Zend, Yii and own frameworks
• Apache, PHP, Javascript (pure and frameworks like Backbone.js / Ember.js and library jQuery)
• Relational Databases
• UML
• Agile Development and Classics Methodologies
• Versioning