Algorithms, Testing, Design Patterns, Coding Standards, data structures, build processes, reliability and scaling, component architecture simplification, engineering excellence, large scale distributed systems, code refactoring, object-oriented concepts, code reviews, source control management, operations, multi-tier systems, retail e-commerce system design, high-volume transaction processing

Java, Golang, Data Modeling, Linux, Node.js, Data Structures And Algorithms, Python, AWS Ecosystem, Functional Programming