CareerPlan

Senior Security Engineer OT

Costa Mesa, CA (OC-00)Full-time$166k2026-09-30 → 2026-11-10
Security clearance required

Core

Design and implement foundational security controls for Operational Technology (OT) and Industrial Control Systems (ICS) environments to protect advanced defense technology infrastructure.

Role type

Senior Security Engineer (OT/ICS)

Builds

Defensive security controls, security roadmaps, and automation/visibility systems for factory production environments.

Domain

Defense technology, Operational Technology (OT), Industrial Control Systems (ICS)

Required skills

OT/ICS security architecture, threat modeling (MITRE ATT&CK for ICS), network design (routing/switching), zero trust segmentation, Python/Go/Rust programming, incident response support

Preferred skills

OT protocols (Modbus, DNP3, Ethernet/IP), ICS/SCADA vendor platforms (Siemens, Rockwell, Honeywell), Linux systems administration

Technologies

Python, Go, Rust, Linux, MITRE ATT&CK, Modbus, DNP3, Ethernet/IP, Siemens, Rockwell, Honeywell

Responsibilities

Lead OT risk assessments and develop multi-year security roadmaps; Architect defensive controls for cloud and production environments; Support deployment and maintenance of security tools; Build systems for automation, visibility, and threat detection; Collaborate with factory teams to ensure secure-by-design environments

Seniority

Senior, hands-on IC