Larry Knopf is the general counsel at HeartWare International Inc., a provider of implantable devices that enable the heart to pump blood throughout the body. The company’s customers include hospitals that provide treatment to heart transplant patients and heart transplant centers.

Headquartered in Framingham, Massachusetts, HeartWare employs about 600. Knopf said the recent hiring trend is slightly up. The firm’s 2015 revenue totaled $277 million.