Deep Space Engineers (=DSE-) is your meat and potatoes "Old School" DSE faction. We have taken the down to earth pragmatic view: "Why reinvent the wheel".
There is innovation, however, to the dual aspects (Primarily) of being Liberty's only legal mining company, and its more important roles being the "muscle" of Liberty industry.
DSE constructs space stations, both civilian and military ships, the processing facilities, and -- most importantly -- the jump gates and trade lanes under special and exclusive contract from Ageira technologies. All gate and lane construction is done under close inspection of an Ageira supervisor, and all key components are delivered as "White Boxes" that are simply plugged in at the appropriate places. These black box components are constructed to defeat scanning attempts and will self-destruct if any attempt is made to open them.
DSE convoys can be found traveling through the four Houses ex-Gallia, but are most commonly seen in Liberty space. Their Heavy Lifter ships are almost always seen around Liberty space stations. If there is heavy construction to be done, DSE will be there. (DSE have repair ships fixing the trade lanes in Frankfurt, and constructing the trade lanes in Poole).