eServices in the area of healthcare are developing quickly. Providing services for researchers in healthcare deals with both complex domain and sophisticated requirements. The objective of this paper is to propose an architecture of an online service to support collaboration of healthcare researchers. The service facilitates the task of seeking collaborators for joint work on producing scientific artefacts. The search of potential collaborators is based on matching the researcher's profile against others' profiles. Profiles are ontology-based and composed of all different scientific-related activities and products of a person. A first prototype of the service was developed in the CLICK project to support researchers in the projects funded by the Vinnvård Programme. The interviews with several users showed appreciation of the usefulness of the tool.