The phrase "a major position in" is correct and usable in written English.
It can be used when referring to someone's significant role or status within an organization, field, or context.
Example: "She holds a major position in the company, overseeing multiple departments and projects."
Alternatives: "a key role in" or "a significant role in".
On the contrary, WikiLeaks recently revealed that Israel was angling for a major position in Unesco.
The Politburo soon assumed a major position in party and state administration, and it eventually came to overshadow the role of the Central Committee.
From this relatively modest beginning, personal photocopier makers gradually built a major position in the mainstream photocopier market that Xerox valued.
Moreover, Universal raised a small amount of money last fall, saying at the time that it planned to acquire a major position in a health care concern.
Within days of Senator John Ashcroft of Missouri's narrow re-election defeat by a candidate who died three weeks before Election Day, religious and conservative leaders began promoting him for a major position in a Bush administration.
A major Democratic Party contributor, he backed Senator Hillary Rodham Clinton's presidential campaign, and some speculated that he would have been interested in a major position in a Clinton administration, possibly as Treasury secretary.
"Glencore is now the world's largest producer and exporter of seaborne thermal coal". But where Glencore has a major position is in the highest-quality coal which is in increasing demand because it generates more heat and is less polluting.
Next, when I saw that Citi had taken a bath in collateralized debt obligations and subprime, and saw that Robert E. Rubin had been on the board in a major position and had failed to stop the train wreck, I was staggered.
But if the appeal fails, Mr. Anderson will become one of the few Democrats in recent history to hold a major elected position in Dutchess, a Republican-dominated county.
