Billionaire investor Warren Buffett shared some career advice as his company, Berkshire Hathaway, hit a $1 trillion market cap – a milestone that coincides with Buffett’s 94th birthday. What Happened: The “Oracle of Omaha” has had a significant week. Berkshire Hathaway reached a market capitalization of $1 trillion on Wednesday. Buffett also celebrated his 94th birthday on Friday, with no intentions of retiring. Buffett, who has led Berkshire Hathaway since 1965, offered his unique viewpoint on career decisions. He suggested to those seeking employment to “take the job that you would take if y…