I don’t work for Jua.ai (is it ok to post for others, even if not primarily a Julia job ad? Julia might be their main language for all I know, or will be…), I just found their work and the job ad intriguing:
Generally, it is not a good idea to post unless it is primarily a Julia job. Ideally, the hiring firm should post, so that people applying know who the contact might be. Otherwise, there are lots of jobs where Julia is applicable, that mention Julia in passing that you can find on indeed.com.