On the other hand, when introduced, Brufen has a hexagonal badge that says Tek in a black circle, worn centrally. Both shoulder pads are non-eagle.
Arguably there are two Brufens. Since he looked entirely different and died twice. And more pertinently, he's a Dept head rather than a rank-and-file Tek, so not the best guide. But then Stitch, of Mechanismo fame, rocked something similar.
I'd go with the full Carlos meself - rounded pads and soft helmet with goggles, as seen in The Starborn Thing. Dillon's Tek Judge Cassidy in Cry of teh Werewolf just had a green smock with his name on it. McCarthy's teks on Atlantis (and in Oz) had mad helmets with any number of lenses, aerials and servo arms
Or to put it another way, as long as its distinct from street uniforms, you just can't go wrong.