AWS Lambda, Amazon Web Services (AWS), Application Programming Interface (API), Best Practices, CSS (Cascading Style Sheet), Change Management, Communication Skills, Continuous Deployment/Delivery, Continuous Integration, Debugging Skills, ECMAScript, ERP (Enterprise Resource Planning), Git, GitHub, GraphQL, HTML (HyperText Markup Language), HTML5, Identify Issues, Information Technology & Information Systems, JavaScript, Leadership, Mentoring, Node.js, Operational Support, Peripheral Hardware, Point of Sale (POS) Hardware, Point of Sale (POS) Systems, REST (Representational State Transfer), Radio Frequency Identification (RFID), React.js, Reporting Dashboards, Retail, Retail Operations, Root Cause Analysis, Smart Grid, System Integration (SI), Use Cases, User Interface/Experience (UI/UX), eCommerce