Librarianship and information architecture

As a retired librarian I have thought back over the years at the profession I loved.  I went from card catalogs to automated systems and I have been amazed at what is possible for libraries.
The part of librarianship that currently fascinates me is information architecture -- how many of you out there have explored information architecture as a speciality?  As I mentioned this line of librarianship fascinates me and I have begun to think of it as the central hub of modern libraries.
As a catalog librarian I was always involved in the organization of information  but what we could do with MARC records didn't always translate well into the databases that were around at the time.  Database developers start with their concept of what is needed and after square pegging it into a round hole they usually sell their product to libraries who then spend years trying to get the product to perform the tasks.
The Obamacare database debacle is a strong example of square-pegging a database to try to fit a specific use.  It seems many companies can build a database but to build one that handles specific information requirements and heavy volumes of traffic is difficult.  Whether you like Obamacare or not it is deeply mired in a dysfunctioning database and web site that seems to have been developed without the end user in mind.
It seems to me that the once "professional" tasks of reference, acquisitions, and cataloging are increasingly being handled by paraprofessionals.  Private information companies in many instances are taking over much of the "professional" work and even the now "paraprofessional" work.  The tasks of ordering books, media, and electronic resources and creating MARC records, authority control, subject analysis, etc. are currently being done in many instances by private companies.
If what I knew as professional librarian tasks are now delegated to paraprofessional librarians or outsourced to private companies - what constitutes professional librarianship today?

I would like to hear from you all!  What area of librarianship are you involved in today and what are your tasks?  Are they teaching Information Architecture in the Library Science and Information Science Degrees?  If you don't think information architecture is the hub of library science today - or are you still involved in the "old school" of acquisitions, reference and cataloging?