Algorithms, Analysis Skills, Apache Kafka, Cloud Computing, Continuous Deployment/Delivery, Continuous Integration, Data Processing, Data Structures, Database Optimization, Debugging Skills, Design Services, Distributed Computing, Docker, Java, Linux Operating System, Messaging Middleware, Messaging Technology, Microsoft Windows Azure, NoSQL, Operating Systems, Performance Management, Performance Tuning/Optimization, Production Systems, SQL Databases, Server Architecture, Software Engineering, System Operations, User Interface Design, User Interface/Experience (UI/UX)