In a parallel universe, the Starfleet Corps of Engineers (also referred to as "Corps of Engineers" or SCE) was a special projects division of Starfleet, assigned to deal with projects and missions requiring high degrees of engineering expertise.
An SCE team commanded by Captain Ochoa worked on Naia VII in 2368, mining materials vital to rebuild Starfleet's defenses following the Battle of Wolf 359. They were ordered to meet specific quotas and to maintain those quotas despite the dangers, which led to reduced safety standards. Though an engineering achievement, the mining operation was difficult and dangerous, and the personnel particularly stressed. (COMIC: Assimilation²)