We are an elixir shop and we never advertised for Elixir devs. Instead we looked for people who knew Javascript and one other language.
That works well. We find the people get up to speed completely in Elixir in a matter of weeks. And are quite fluent by the second month. There are a few people who just can't grok it and they were generally bad programmers in the first place.
But if you're a shop with an obscure stack - never insist on someone knowing it as a condition of employment.
They should know the environment well (Linux, Postgresql, Javascript, HTML, SQL, etc) and they will be fine.
We are an elixir shop and we never advertised for Elixir devs. Instead we looked for people who knew Javascript and one other language.
That works well. We find the people get up to speed completely in Elixir in a matter of weeks. And are quite fluent by the second month. There are a few people who just can't grok it and they were generally bad programmers in the first place.
But if you're a shop with an obscure stack - never insist on someone knowing it as a condition of employment.
They should know the environment well (Linux, Postgresql, Javascript, HTML, SQL, etc) and they will be fine.