Jack McDowell

Jack was the Assistant Chief engineer at Starbase 134 in the late 23rd century. 

Early life before Starfleet
Jack was born on June 29, 2228 human calendar time on the planet Earth in Ethiopia, Africa.

Chronology

 * 2228: Jack is born on Earth in Ethiopia, Africa.
 * 2246: Jack enters Starfleet Academy
 * 2250: Jack graduates Starfleet Academy and is promoted to Ensign, the first assignment is the USS Suleiman as an engineer.
 * 2255: Jack is promoted to Lieutenant junior grade and assigned to the USS Constellation as an engineer.
 * 2260: Jack is promoted to full Lieutenant and is made the Assistant Chief Engineer on the USS Tori.
 * 2265: Jack is promoted to Lieutenant Commander and is assigned to the USS Rigel as the Chief Support Officer.
 * 2270: Jack is promoted to Commander and becomes the Assistant Chief Engineer at Starbase 134.