Crh

5 days ago

ICS Cyber Security Engineer

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Last checked: 14 hours agoStatus: Live

Job Summary

Bridge corporate IT security with plant floor automation by designing, deploying, and maintaining OT cybersecurity controls across manufacturing facilities. You’ll support OT cybersecurity deployments for automation teams, manage industrial security solutions (segmentation, remote access, endpoint protection, backup/recovery, patching), mitigate vulnerabilities in PLC/HMI/SCADA environments, secure OT/production integration points, and maintain monitoring and incident response capabilities using OT visibility and SIEM/log tools.

Location: Atlanta

Workplace: Hybrid

Employment Type: Full time

Job Function: Cybersecurity

Seniority: Mid level

Key Responsibilities

•Provide technical consultation and hands-on engineering support to divisional automation teams for OT cybersecurity deployments, line expansions, and plant modernization projects.
•Operate and manage industrial security solutions, including network segmentation (Purdue Model), secure remote access for third-party OEMs, endpoint protection, backup/recovery, and firmware/patch management.
•Identify, assess, and safely mitigate cybersecurity vulnerabilities in legacy PLCs, HMIs, and SCADA networks without disrupting critical manufacturing uptime.
•Secure integration points between OT plant networks, proprietary batching/mixing software, weighbridges, and bulk logistics/distribution interfaces.
•Maintain OT visibility platforms, build search queries within SIEM/log management tools, and participate in incident response planning for physical process disruption and disaster recovery.

Pay and Benefits

Perks:Health InsuranceDentalDisability InsurancePension

Key Requirements

•5+ years of experience in IT/OT operations, system administration, or industrial cybersecurity engineering, preferably in heavy industry, process manufacturing, or mining/aggregates.
•Deep understanding of OT networks/architectures (Purdue Model) and cyber threats for heavy industrial Cyber-Physical Systems (CPS).
•Hands-on experience with Windows Server/Workstations, industrial networking, virtualization hosting environments, and backup/disaster recovery for plant networks.
•Proven experience with CPS visibility platforms (e.g., Claroty, Armis) and security tooling (endpoint protection, network security).
•Strong grasp of industrial incident response and change management, with exposure to log management/SIEM tools (e.g., Splunk) for threat detection.

Experience:5+ yearsHeavy industryProcess manufacturingIndustrial cybersecurityIndustrial control systemsOT cybersecurity

Education:Bachelor's in Automation Engineering, Electrical Engineering, Information Technology, Computer Science, or Industrial Cybersecurity

Skills:Interpersonal skillsTechnical documentationSelf-motivationProcess-drivenCollaboration

Certifications:SANS/GIAC GICSPSANS/GIAC GRIDSANS/GIAC GCIPISA/IEC 62443 ExpertCISSPCCNA

Tech Stack:OT cybersecurityPurdue ModelPLCsHMIsSCADAWindows ServerWindows WorkstationsIndustrial networkingVirtualizationBackup/disaster recoveryClarotyArmisEndpoint ProtectionNetwork SecuritySIEMLog managementSplunkSIEM/log management toolsFirmware/patch managementNetwork segmentation

Company Brief

Crh

Global building materials business supplying aggregates, cement, asphalt, ready-mixed concrete, and construction products and services to the construction industry across Europe, North America and other markets.

Industry: Building Materials

Company Size: Enterprise (1,001+ employees)

Revenue: USD 1B+

Growth: Public Company

Valuation: Public Company (Market Cap in USD)

Funding: IPO / Publicly Listed

Headquarters: Dublin, Ireland

Founded: 1970

Website LinkedIn

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Crh