The phrase "a founder and manager" is correct and usable in written English.
You can use it when describing someone's roles or positions within an organization or business.
Example: "As a founder and manager of the startup, she played a crucial role in its development and success."
Alternatives: "an originator and director" or "a creator and supervisor".
Mr. Johnson, 35, is a founder and a manager of the Johnson Investment Group, an investment management firm in Bellevue, Wash.
The bridegroom, 34, is a founder and the manager of Beyondbond, a financial software consulting business in Manhattan.
"We're not just some disabled people playing out there who are looking for a pat on the back," said Victor Calise, a founder and team manager of the sled-hockey Rangers.
Mr. Stevens, who got his start at 16 while in high school as a scriptwriter for a radio farm program on NBC, was a founder and general manager of the television division of Warner Brothers in the 1950's.
In addition I was a founder and active manager of the United States Servicemen's Fund, which supported many anti-war coffee houses, newspapers and entertainments done for and often by anti-war servicemen and women, and I served on the founding board of the Haymarket Foundation.
The bridegroom, 34, is a founder and the general manager of Octone Records in New York.
The thing that made it unusual was that (a) the deportee in question was not a political prisoner or militant or agitator but instead the founder and manager of a civilized Jerusalem bookstore, and (b) there was no stated reason for the deportation.
He built a successful career as the founder and manager of several international oil distribution and trading companies.
"Back in the '90s, companies got funded for five times the amount that Tumblr raised and didn't have anything close to a business model," said Roger Ehrenberg, founder and manager partner of IA Ventures.
