Job seekers can connect with potential employers Wednesday at the Marlborough Works! employment fair at the Courtyard by Marriott hotel on Felton Street. The free event runs from 6 to 8:30 p.m., and will feature more than two dozen companies looking to fill more than 100 open positions, according to organizers. Employers at the event will include Boston Scientific, Marlborough Hospital, and Raytheon. The event is a joint effort between the city, the Marlborough Economic Development Corporation, and Quinsigamond Community College. “It was very clear to me after several meetings I had with a number of well-known companies that they were looking to add to their workforce,” Mayor Arthur Vigeant said in a statement on the job fair. “It’s a win-win for everyone.”