Senior OT Cyber Defense Engineer

Orion International; United States; On-site; USD 145,000 - 170,000; Full time

Job summary

Orion International is seeking a Senior Cyber Systems Administrator (Operational Technologies) in the United States. The role centers on building and securing an industrial control systems lab, installing and hardening OT environments, and administering security tools (NDR/EDR/SIEM).

The candidate should have 5+ years in OT cybersecurity or 10+ years for senior level, with knowledge of NIST CSF and embedded system security.

Qualifications

• OT cybersecurity architecture knowledge aligned with NIST CSF.
• Experience with NDR, EDR, and SIEM tooling.
• 5+ years in cybersecurity or 10+ years at Level IV.
• Experience building and hardening industrial control systems labs.
• Familiarity with IEEE/IEC standards in cyber security for embedded systems.

Responsibilities

• Install, harden, and administer OT systems in a lab and production environment.
• Build and maintain an ICS/OT-focused lab to support security testing and validation.
• Manage cybersecurity tools (NDR/EDR/SIEM) and incident response processes.
• Collaborate with engineers to ensure compliant OT security designs.

Skills

OT cybersecurity

SIEM setup

EDR/NDR experience

NIST CSF knowledge

Industrial control systems

Threat detection

Cybersecurity tooling

Tools

NDR

EDR

SIEM

Job description

Orion International is seeking a Senior Cyber Systems Administrator (Operational Technologies) in the United States. The role centers on building and securing an industrial control systems lab, installing and hardening OT environments, and administering security tools (NDR/EDR/SIEM).

The candidate should have 5+ years in OT cybersecurity or 10+ years for senior level, with knowledge of NIST CSF and embedded system security.