Looking for a specialist for joint research?

Question

IT education

The task was to find a specialist (postgraduate student, researcher) for joint research in the field of high-frequency trading (if not to go deeper, then solve a list of trading tasks using the 'Cloud Computing + Big Data + HPC' bundle).
Despite the fact that I am a graduate student at a university with federal status, a local search—acquaintances of the dissertation supervisor, my acquaintances, the 'social pages' of my university's scientific society—has turned up nothing.
Are there specialized sites / services / social groups? networks / other techniques for finding specialists for joint research?
There is an important aspect of the search, because of which it makes no sense to advertise in the newspaper 'work' (exaggerated): the problem is being investigated within the framework of scientific activity and no one will pay a specialist for his work (i.e. he is either a researcher himself, or an altruist, or in some other way will motivate himself).

Answer 1

blogberg.ru
smart-lab.ru

Answer 2

Links are useful, but still it's social. network for financiers, not the academic community. And having arbitrarily reviewed 10 questionnaires from the rating, I did not find any 'traces' of scientific activity in the questionnaires of the participants.
Another drawback: if tomorrow I have the task of applying Computer Science to the study of the human genome, then I will have to register in biological social networks. networks / forums, but about profiles, experience and connections fin. communities can be forgotten.