> Why do you think of that? were you hired as the person that knows all of them?

> Remember that as software engineers, our job is to solve problems. It doesn't matter what technology, language, or framework as long as you bring value on the table.

What I observe in the industry is different. The market is so fierce and competitive and many companies (especially non-enterprise, medium-sized startups) are looking for people who perfectly fit their positions. Tools, domain, methodologies, etc.