Alexandra Riversong

Alex was the Chief engineer onboard the USS Republic (NCC-1371) in the late 23rd century. (Star Trek: The Intrepid Adventures)

Early life before Starfleet
Alex was born on April 5, 2236 human calendar time on the planet Earth in Tempe, Arizona.

Chronology

 * 2236: Alex is born on the planet Earth in Tempe, Arizona.
 * 2254: Alex enters Starfleet Academy
 * 2258: Alex graduates Starfleet Academy and promoted to Ensign, her first assignment is the USS Ari as an engineer.
 * 2260: Alex is promoted to Lieutenant junior grade and is assigned to the USS Essex as an engineer.
 * 2265: Alex is promoted to full Lieutenant and is assigned to the USS Lafayette as the Assistant Engineer.
 * 2269: Alex is promoted to Lieutenant Commander and is assigned to the USS Republic as Chief Engineer.