Conversation so far:
What was Irving Thalberg's role at Universal Studios?
office secretary.
What year was he hired in this role?
CANNOTANSWER.
Was he ever promoted during his time with Universal?
later became personal secretary to the studio's founder and president, Carl Laemmle.

Question: What did he do after becoming Laemmle's secretary?
Self-contained rewrite: What did Irving Thalberg do after becoming Laemmle's secretary?