This is part of the horrible brokenness of IT labor.
I don't know the features of PostgreSQL that you want to use, but I'm totally willing to learn if somebody is going to cover my living costs. But I'm not even going to respond to your job ad if you put "PostgreSQL plv8 REQUIRED" in it.
For that matter, if you think it's simple enough for a part-time DBA, then why don't you just assign one of your existing IT people to learning and implementing the RDBMS that you need? Surely not all of them want to do the exact same job forever. PostgreSQL has excellent documentation.
Because our resources (time) is already pretty thin wrt maintenance as well as our next generation version. PostgreSQL has several unsupported, and a commercial option for replication. Unfortunately you need a support contract to even talk about getting the commercial/supported version, and there's ongoing development towards bringing it in the box. I already expended enough time trying to get up to speed and have something reasonable working, and it was less time to look elsewhere for the features I needed in another database that had redundancy/scale features in the box.
If I was hiring a full time DBA, I would have put POSTGRESQL DBA as the job title, and made plv8 a feature requirement that I needed/wanted. As it is, there's no budget for that.
I don't know the features of PostgreSQL that you want to use, but I'm totally willing to learn if somebody is going to cover my living costs. But I'm not even going to respond to your job ad if you put "PostgreSQL plv8 REQUIRED" in it.
For that matter, if you think it's simple enough for a part-time DBA, then why don't you just assign one of your existing IT people to learning and implementing the RDBMS that you need? Surely not all of them want to do the exact same job forever. PostgreSQL has excellent documentation.