Clarity Business Solutions, Baltimore, has named Ryan Hendrickson as director of innovation.
Sentar Inc., Huntsville, Alabama, has promoted Joseph Sabin to vice president of health information technology.
Alluxa Inc., Santa Rosa, California, has appointed Bill Kastanis as the vice president of operations.
Maj. Gen. Michael R. Fenzel, USA, has been assigned as vice director for strategic plans and policy, J-5, Joint Staff, Washington, D.C.
Brig. Gen. Richard E. Angle, USA, has been assigned as deputy commander, Joint Special Operations Command, U.S. Special Operations Command, Fort Bragg, North Carolina.
Advanced Concepts and Technologies International LLC, Arlington, Virginia, has appointed Mike Zembrzuski as chief growth officer.
Altair, Troy Michigan, has named Andrea Siudara as chief information officer.
Andreas Räschmeier has been appointed CEO of Veridos, Munich, Germany.
Alluxa Inc., Santa Rosa, California, has promoted Kevin Nolen to director of engineering.
Teltech Group, Dallas, has selected Mike Meagher as president of the company.
Robin.io, San José, California, has appointed Jef Graham as CEO.
Bryan Copeland has been appointed by Remediant Inc., San Francisco, as global head of channels.
Mercury Systems Inc., Andover, Massachusetts, has appointed William Conley as senior vice president and chief technology officer.
Ed Burrows joined Brillient Corporation, Reston, Virginia, as vice president of intelligent solutions.
Iron Vine Security, Washington, D.C., has appointed Ryan Brewer as executive vice president of strategy and business development.