Top Secret UNIX Systems Administrator - Mission Critical

ERT, Inc.; Yorktown (VA); On-site; USD 80,000 - 110,000; Full time

Job summary

Sev1Tech is seeking a UNIX Systems Administrator to support NAVSUP Ordnance Information System (OIS) on a mission-critical program. You will provide full infrastructure and platform support from Mechanicsburg, PA or Yorktown, VA, on-site five days a week.

Applicants must have a Top Secret clearance and UNIX server experience, with DoD cybersecurity certifications. The role emphasizes reliability, incident response, and collaboration across teams.

Qualifications

• Active Top Secret clearance required to start.
• U.S. citizenship required for Federal Clearance.

Responsibilities

• Provide full infrastructure and platform support for NAVSUP OIS systems.
• Install, monitor, troubleshoot, and optimize UNIX servers and configurations.
• Maintain system security posture in line with DoD/Navy guidance (RMF, STIG).
• Plan, perform disaster recovery, backups, and data integrity checks.
• Collaborate with cross-functional teams to ensure mission-critical reliability.

Skills

UNIX administration

Security+ or equivalent

System monitoring

Disaster recovery

On-call support

Education

Bachelor's degree in CS/IS/Engineering

Tools

STIG/IAVA

ACAS

RMF

AWS SysOps

Job description

Sev1Tech is seeking a UNIX Systems Administrator to support NAVSUP Ordnance Information System (OIS) on a mission-critical program. You will provide full infrastructure and platform support from Mechanicsburg, PA or Yorktown, VA, on-site five days a week.

Applicants must have a Top Secret clearance and UNIX server experience, with DoD cybersecurity certifications. The role emphasizes reliability, incident response, and collaboration across teams.