The computer operator's role is to provide first-level support for any problems associated with IBM i system activity. It is common for this person to perform the following tasks:

• Powering the IBM i system up and down
• Monitoring the IBM i system for any error messages and responding to simple requests
• Monitoring the processing of IBM i operational jobs and resolving basic problems
• Identifying and resolving general network problems
• Responding to tape or cartridge requests and performing recovery action if required

The IBM i application programmer is responsible for creating and maintaining user systems and supporting system changes. They are responsible for performing the following types of tasks:

• Designing, coding, testing and documenting new programs
• Analyzing and resolving coding problems
• Developing specifications for program enhancements

The IBM i Systems Programmer is responsible for establishing and maintaining the IBM i software system and performs the following tasks:

• Managing the installation, configuration, maintenance, customisation and tuning of the IBM i operating system
• Identifying, analysing and rectifying problems associated with IBM i system software

The AIX administrator is responsible for providing technical support and monitoring of IBM pSeries servers running the AIX operating system The duties of this position are:

• Installing and configuring AIX operating system software
• Performing major system software upgrades
• Undertaking AIX system administration tasks and performance tuning