Programmer.
Authority can be used as another word for expert and starts with an "A". Example: An authority on the subject of crime, notes that...
professional
A word that starts with the letter A and means move is:ambulate
Modernize is a word that starts with m and means to upgrade.
"Administrator" is a word that means leader and starts with the letter a.
Make is a word that means to create and starts with "m".
A word that starts with "d" and means a loud noise is din.
A word that starts with CA that means to move friskily is to cavort.
"Psychologist" is a word that starts with a p and means counselor.
"Bisect" is a word that means cut into two halves which starts with bi.
"Conceptualized" is the word that starts with a "c" and means to form an idea.
Awesome is a word meaning great that starts with A.