Senior UNIX System Engineer (Radford, VA)

**Senior UNIX System Engineer**
_(_ Active SECRET clearance required _)_

Ops Tech Alliance (OTA) is seeking a Senior UNIX System Engineer to support PL ALTESS at Radford Army Ammunition Plant, VA, under Task Area 1 – Operations. The engineer designs, installs, configures, and sustains UNIX/Linux servers hosting ALTESS production applications in a STIG-compliant environment.

_This position is contingent upon contract award._

**Key Responsibilities**

• Administer RHEL, OEL, and Solaris servers supporting production workloads.
• Perform patching via YUM/RPM and maintain DNS, SFTP, SMTP, and NTP services.
• Configure and harden firewalld/iptables; respond to incidents and outages.
• Support STIG compliance, ACAS scan remediation, and POA&M closure.

**Required Qualifications**

• Active IAT Level II certification (Security+ CE or equivalent).
• Computing Environment cert (e...