We use selected subcontractors for the provision of our Knowledgeworker services. You can find an overview of the current subcontractors here: https://www.knowledgeworker.com/legal/sub-processors.html 

All service providers and subcontractors are carefully screened. Before commissioning, a risk assessment is carried out with regard to the relevance of the service for our business processes. In addition to the actual functional test, the contractual basis, the technical and organisational measures as well as the compliance regulations of the providers are also evaluated. We conclude a contract processing agreement with all subcontractors who process personal data on our behalf.