Dirk Schulze has been appointed CEO of Bentec GmbH.

FreeWave Technologies has hired Clive Winkler, Ph.D., as the new CTO.

Rex Energy Corp. has named Daniel J. Churay president and CEO.

IMV Projects has appointed Kevin O’Brien president. Ivan Velev, founding president of the company, will continue to serve as chairman of the board.

ENGlobal has appointed J. Neal Vizina to serve as the new president of engineering.Vizina will be responsible for the company’s midstream and downstream engineering initiatives.

Expro has appointed Keith Palmer president and region director for Expro North America.

Dan Houser has been appointed senior vice president of operations for McDermott International Inc.