An application analyst is someone whose job is to support a given application or applications. This may entail some programming, some system administration skills, and the ability to analyze a given problem, diagnose it and find its root cause, and then either solve it or pass the problem on to the relevant people if it does not lie within the application analyst’s area of responsibility. Typically an application analyst will be responsible for supporting bespoke (i.e. custom) applications programmed with a variety of programming languages and using a variety of database systems, middleware systems and the like. It is a form of 3rd level line technical support. The role may or may not involve some customer contact but most often it involves getting some description of the problem from helpdesk, making a diagnosis and then either creating a fix or passing the problem on to someone who is responsible for the actual problem area.
They are classified under Computer Systems Analysts and the associated job title is programmer analyst.
If you choose an educational/career pathway as a quality assurance engineer you would find employment in computer systems design and related services, finance, insurance, information technology, as well as government.