If a buy is under Part 12, can you exempt the application of the SCA by characterizing the work as professional?
The services you describe do not fit well in the Professional Services category. The FAR doesn't provide a clear definition for professional services but does provide specific examples; namely legal, accounting, engineering, and architectural. You can view a clear categorization of the different types of services, including Information Technology vis-à-vis Professional Services, at this GSA link
. So your basic question is a moot one, as the services in your situation are not likely to be considered professional services.