Berry, a division of Suffolk Construction, has promoted five of its employees.

Josie Corcoran has been promoted to project executive. Formerly a project director, Corcoran has worked for Berry since 2001. She is a graduate of Carnegie Mellon University and lives in Haverhill.

Neil Slyva, of Topsfield, has been promoted to the position of senior project engineer. A graduate of the University of Massachusetts, he joined Berry in 2008. He is a member of the American Society of Mechanical Engineers.

Stacey Stares has been promoted to senior project manager. Stares, of Medford, has been with Berry since 1998 and is a graduate of Wentworth Institute of Technology.

Sergio Tejada and Jeremy Thomsen have both been named project engineers. Tejada, of Boston, joined Berry in 2007. He is a graduate of Campbell University’s Lundy-Fetterman School of Business. Thomsen has worked at Berry since 2008. He is a graduate of Wentworth Institute of Technology and lives in Chelmsford.

"It’s a pleasure to promote these individuals who have each demonstrated a commitment to their teams and to producing excellent results," said Peter Campot, president of Berry.