Earlier quoted context omitted.
Offering someone you don't know a senior position without some kind of insight into their level of competence is just a lottery. I've screened a number of very senior developers with impressive CV's applying for senior C++ positions. When I look at their code, usually it just sucks. More often than not it's just plain old C code with C++ dressing. For example, using pthreads in stead of C++11 std::thread, and mostly…
> Offering someone you don't know a senior position without some kind of insight into their level of competence is just a lottery. So what do you think the rest of the world does? Mechanical, civil, electrical engineering, lawyers, doctors, HR, managers? What makes software so special?
For many jobs, the world outsources candidate quality assessment to trusted academic institutions and certification boards. But the software industry has decided — perhaps rightly — that software engineers do not have to go the traditional route of getting a tertiary education attested to by diplomas and certificates.
So rather than comparing with doctors and lawyers, you need to look at what the rest of the world is doing with professions that lack institutional gatekeeping. For example, it's pretty common for translators to do tests before they are offered a job. An agile consultancy described in a podcast how they are hiring scrum masters — and there is a combination of checking the certificates (PSM3's are fast-tracked to a final interview) and tests (seeing how a candidate scrum master can run a scrum event with a team). I am sure there will be lots of similar examples in other areas.