It was luck. I was the beneficiary of greenfield projects built with Elixir that proved their worth to the organization before I started working with them. Onboarding with Elixir as a senior engineer was fun and interesting, most recently coming from prior years of full time experience working with Rust.

There aren't many data engineering related jobs in either Elixir or Rust, yet, but as someone with depth in both I can use either and lead a team to use them successfully in short time.