We translate technical things (software, hardware, manuals) and we are technical because we know what happens under the hood. We build our own CAT tools. It doesn't get more technical than that, honestly.
Jokes aside, we are translators. All of us. This is what we love to do and what we actually understand.
You might call this an agency, but that would be a misnomer. Let's not go down that rabbit hole right now (Grimm brothers, etymology, Kissinger... you see?). For now, let's just say system.