Must-Have Technical Skills: Oracle & Database (Critical): Oracle PL/SQL development (4+ years) Writing functions, procedures, packages, views Complex business logic implementation Database performance tuning and optimization Oracle mod\_plsql web framework Database-driven web application patterns Understanding of Oracle Application Server deployment Advanced SQL Multi-table joins, analytical functions Query optimization for large datasets Oracle-specific features and functions Frontend Legacy Technologies (Critical): DHTMLX Suite v5.1 Professional (2+ years preferred) Grid components, forms, layouts, charts Custom component configuration and styling Event handling and data binding patterns Vanilla JavaScript DOM manipulation without frameworks AJAX patterns and asynchronous programming Cross-browser compatibility considerations HTML/CSS Semantic markup for data-heavy applications CSS for enterprise application styling Responsive design principles Web Application Architecture Database-driven web applications: Understanding of thick database, thin application layer patterns Session management and state handling Server-side rendering from database procedures jQuery (2+ years) DOM manipulation and event handling AJAX integration with Oracle backend Plugin development and integration Modern Backend Development: Node.js/Express.js (2+ years) RESTful API development Oracle node-oracledb connectivity Authentication and middleware patterns Cloud & DevOps: AWS services: ECS, RDS Oracle, S3, CloudWatch Docker: Basic containerization concepts Git: Version control and collaboration workflows Development Environment: Oracle SQL • Plus/SQL Developer/TOAD: Database development tools JavaScript debugging: Browser dev tools, debugging techniques Unix/Linux command line: Basic system administration