Unrelated to elixir, but a company I worked at used a legacy and niche programming language in a few of their older projects. Their hiring strategy was similar:

Unrelated to elixir, but a company I worked at used a legacy and niche programming language in a few of their older projects. Their hiring strategy was similar: have a few seasoned programmers and hire juniors that are willing to learn (and there wasnt' a shortage of these). Never had a problem.