In the tech field, an unusual combination of specialist skills, knowledge of an "exotic" programming language, and extraordinary experience make a position rare on the market.
For example, not so long ago we found a Senior C ++ developer for a startup. This position was placed into the Executive Search category due to the fact that the developer also had to know Node. js, which is considered to be a rare skill combination in the IT market.
The position can be rare because of the position itself. For example, a month ago we filled a vacancy for the DevOps Evangelist position. This is a very rare profession in the Russian market, so in this case, we were looking for specialists all over the world. The qualified specialist turned out to be a Portuguese citizen and now he successfully works for our client's company. You can read more about the case here.