Java, Design Patterns, C#, C++, Object Oriented Design, Perl, Software Development Life Cycle, Testing, Code reviews, Build processes, Source control management, Multi-tiered multi-threaded embedded or distributed software applications, Operations

Application Programming Interfaces, Software Development Life Cycle methodologies, Integration techniques, Testing frameworks and methodologies, Payments Fundamentals

Software Development, Testing, Design Patterns, Coding Standards, programming, build processes, Reliability, code reviews, Scaling, source control management, operations, full software development life cycle