Amazon Web Services (AWS), Apache Kafka, Application Programming Interface (API), Automation, CPU (Central Processing Unit), Caching, Cloud Computing, Continuous Deployment/Delivery, Continuous Integration, Data Management, Data Partitioning, Distributed Computing, Docker, Ecosystems, Event Management, Express.js, High Availability, JavaScript, Microservices, MongoDB, Multithreaded Programming, Node.js, Operational Strategy, Performance Tuning/Optimization, REST (Representational State Transfer), React.js, Redis, Scalable System Development, System Architecture, User Interface/Experience (UI/UX)