The epidemiological situation in Kazakhstan is not looking very good for now, they're in a second lockdown until the end of July. Strangely enough, this doesn't affect domestic flights. Domestic services run with almost their pre-pandemic frequency, international ones are very limited though. Air Astana are planning on establishing a cargo division with the 767s.
Job applications via CAE have not been open for quite a while now. Whether that's temporary or Air Astana will only work with Sigma for now, I have no clue.