Suddenly you feel nostalgic for the IT systems you never had… Web Architecture: Client-server model, MVC, APIs (REST, POX), JSON, XML, HTML, Apache, NGINX, Web Caching (client and server side), CDN, Web Security. Software Architecture: OOD, OOP, Design Patterns, AI Methods and Principles, Web/Mobile/ Desktop Software Principles and Programming Languages: PHP, Python, Javascript, Java (Android & Web Frameworks), Objective C, Swift (iOS), Software Security. Software Product Management: Agile Methodologies, Scrum, Kanban, User Stories, User Journeys, Requirement Elicitation, Stakeholders Considerations, HCI principles, Wireframes, Storyboards, Project Planning, Iteration Planning, WBS Databases: RDBMS, SQL, ETL, Data Integration, Data Cleaning, XML, Data Security, NoSQL. Networking: OSI model, TCP/IP Protocol Stack, Specifications and Standards of Ethernet, WAN Protocols, Multilayered Network Design (LAN/WAN), Network Security, Cisco IOS. Operating Systems: Linux, OS X, Windows.