Haystack
← Back to Jobs
Technology
NC

OT/ICS Security Architect

NR Consulting LLCSt. Louis, MO🇺🇸United StatesPosted Sep 28, 2026

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
St. Louis, MO, United States
Posted
Yesterday
Zero Trust

Job Description

Key Requirements:

10+ years of cybersecurity experience with strong OT/ICS security architecture expertise.

Experience securing SCADA, PLC, DCS, HMI, industrial networks, and critical infrastructure.

Strong knowledge of IEC 62443, NIST CSF, NIST SP 800-82, and industrial security best practices.

Design network segmentation, zones/conduits, firewalls, secure remote access, IDS/IPS, and Zero Trust architectures.

Experience with IT/OT integration, vulnerability management, incident response, risk assessment, and security monitoring.

Knowledge of industrial protocols such as Modbus, DNP3, OPC UA, Ethernet/IP, and PROFINET.

Experience with SIEM, EDR/NDR, asset discovery, vulnerability assessment, and SOC integration.

Ability to work with engineering, infrastructure, operations, and cybersecurity teams.

 

Ideal Candidate: An architect who can secure industrial environments while understanding the operational requirements of SCADA/ICS systems and critical infrastructure.

 

Similar jobs