"sales engineer"

I haven't looked much into that job description but, on the face of it, it seems like an oxymoron.

Salespeople have emotional intelligence to spare; they go around shaking hands, smiling, and making eye contact. Meanwhile, engineers are barely funcional autists who toil away in their cubicles, happily employed in designing some contraption, disturbed only by the perspective of having to engage from time to time in dreaded human contact.

I conclude therefore that the "sales engineer" is the chimera of the IT world, a fictional creature whose hold on our imaginations is explained by the the shocking dissimilarity of its component parts.