The Level 4 Software Integration Engineer must possess the following skills and experience: Provide customer support for HPC software to enable High Performance Computers to continue to run in operations, and support the range of UNIX, LINUX, Windows Systems, desktop applications, servers, and networks required in support of the mission. Provide customer support for HPC software to enable High Performance Computers to continue to run in operations, and support the range of UNIX, LINUX, Windows Systems, desktop applications, servers, and networks required in support of the mission.