Conversation so far:
when was George Bernard Shaw born?
Shaw was born at 3 Upper Synge Street in Portobello, a lower-middle-class part of Dublin.
where did he go to school?
Between 1865 and 1871, Shaw attended four schools, all of which he hated.
who were his parents?
He was the youngest child and only son of George Carr Shaw (1814-1885) and Lucinda Elizabeth (Bessie) Shaw (nee Gurly; 1830-1913).
where did he grow up?
By the time of Shaw's birth, his mother had become close to George John Lee, a flamboyant figure well known in Dublin's musical circles.
why didn't he like school?
"Schools and schoolmasters", he later wrote, were "prisons and turnkeys in which children are kept to prevent them disturbing and chaperoning their parents..
what did he do when he finished school?
In October 1871 he left school to become a junior clerk in a Dublin firm of land agents, where he worked hard, and quickly rose to become head cashier.

Question: what did he do after he left that  job?
Self-contained rewrite: What did George Bernard Shaw do after he left the Dublin job?