I've spent most of my library career working with ILS/LSP's and related software, both in libraries and at vendors.  I tend to gravitate toward the more complicated setups of consortia and larger libraries, and I also enjoy strategic planning and visioning.  Currently I work with these products at EBSCO: Software as a Service, FOLIO Services, OpenAthens, Stacks, Bibliograph, Panorama, EBSCO Discovery Service.