cperciva is the creator of the Tarsnap backup service. So yes, he is very much a software developer. For future reference since you're new here, I suggest clicking on the username above a post to investigate a person's identity.

Often the important part of an invention isn't figuring out how solve a problem; it's figuring out what the problem is in the first place.

Yes, I'm quite aware that some problems only have a few feasible solutions.