Hayes (Ensign)

Hayes was a 24th century Federation Starfleet crewmember. In 2370 he served as part of the engineering staff aboard the USS Enterprise (NCC-1701-D). The following year, Hayes was serving as a tactical officer on the bridge. 

parallel reality
In one parallel timeline timeline experiences by Lieutenant Worf in 2370, Geordi La Forge had been injured and Hayes filled-in for the chief engineer.