has three operating divisions: (a) Security, providing security and inspection systems, turnkey security screening solutions and related services; (b) Healthcare, providing patient monitoring, diagnostic cardiology and anesthesia systems; and (c) Optoelectronics and Manufacturing, providing specialized electronic components and electronic manufacturing services for original equipment manufacturers with applications in the defense, aerospace, medical and industrial markets, among others. The successful candidate will have practical experience administering Windows and/or Linux servers, virtual machines, network services, user accounts and access controls, patching, backups, system monitoring, and technical documentation in a DoD, federal, defense-contractor, regulated, or similar security-conscious environment.