Despite its seemingly isolated geographic location, Almaty is surprisingly diverse on the ground.
Kazakhstan as a whole is home to over 100 nationalities, and Almaty has the most cosmopolitan population within the country. Ethnic Kazakhs make up the majority of the population, followed by a significant population of Russians who relocated there during the Soviet years.
Prior to visiting, I was intrigued by the dynamics between these two communities. There is some visible segregation in professional and social spheres, stemming from cultural differences between the two communities. Even second or third generation Russians will still refer to themselves as 'Russian' rather than Kazakhstani. But from what I could witness, both groups appear to coexist harmoniously, at least within Almaty.
Russian is by far the dominant language in Almaty, serving as the de facto default even for many ethnic Kazakhs, despite the government's attempts to reinvigorate its use.
Somewhat surprisingly, there is a significant, fully assimilated Korean community, a result of forced migration during the Stalin era in the 1930s. You'll also encounter smaller numbers of Uzbeks and other Central Asian neighbours. To cap it off, there is a large population of Indian students based at the city's universities.
In terms of conventional tourism, the main groups appeared to be Indians and visitors from Arab countries, whilst I occasionally picked up on a stray North American accent. As a place to mix with fellow remote workers or a wider expat community, unless you are a Russian speaker, you're almost certainly better off looking elsewhere.
Whilst the majority of the population is nominally Muslim, similar to Azerbaijan, the presence of Islam on the ground feels incredibly discreet. Kazakhstan is constitutionally secular, and Almaty especially is known for being particularly liberal, so if you did not know beforehand, it would be difficult to make any association with the religion. Alcohol is served and enjoyed freely, and whilst you may see some more conservative dress from women, there's little to identify with the religion.