OT Cybersecurity & Systems Engineer

Cobb County-Marietta Water Authority; Marietta (GA); On-site; USD 95,000 - 125,000; Full time

Job summary

Cobb County-Marietta Water Authority is seeking an OT Systems & Cybersecurity Specialist to lead hands-on administration, security, and lifecycle management of OT computing systems supporting critical water infrastructure.

You will coordinate with IT, Security, SCADA, Engineering, and vendors to protect confidentiality, integrity, availability, and recoverability of OT systems while aligning with regulatory requirements and industry guidance.

Qualifications

• Bachelor's degree and 3+ years in systems administration, cybersecurity, OT/SCADA tech, or related field, or equivalent experience.
• Experience with Windows Server/Workstations, AD, DNS, and Microsoft technologies.
• Knowledge of OT/SCADA networks, HMIs, historians, and domain segmentation preferred.
• Certifications such as Security+, CySA+, Network+ or CCNA are a plus.

Responsibilities

• Administers Windows servers, workstations, VMs, applications, and SCADA OT environments; patches, upgrades, troubleshoots systems.
• Supports SCADA-related servers, historians, databases, HMIs, and engineering workstations with proper separation from process-control duties.
• Manages accounts, permissions, authentication, and access controls for OT systems.
• Maintains endpoint protection, vulnerability management, logging, and cybersecurity technologies in OT.
• Monitors performance, availability, and cybersecurity events; participates in incident response and post-event analysis.
• Coordinates vulnerability assessments, patching, and system hardening with operational constraints.
• Assists with OT cybersecurity policies, standards, and secure baselines in line with regulations.
• Participates in audits, risk assessments, tabletop exercises, and remediation for OT systems.
• Maintains OT inventories, configurations, and recovery documentation for resilience.
• Supports OT network segmentation, secure remote access, and trust boundaries.
• Evaluates vendor access, cybersecurity practices, and architecture changes for risks.
• Provides OT cybersecurity guidance and security awareness training.
• Monitors threats related to water utilities and industrial control systems; participates in threat-hunting.
• Coordinates during incidents with internal and external stakeholders.
• Develops and tests OT disaster recovery and business continuity plans.
• Reviews proposed technologies and participates in FAT/SAT and commissioning.
• Tracks OT cybersecurity metrics and supports continuous program improvement.
• Collaborates on physical security integration for OT assets.
• May require after-hours work and other duties as assigned.

Skills

Windows Server

Active Directory

Vulnerability management

EDR/anti-malware

SCADA/OT security

Network fundamentals

Incident response

Education

Bachelor's degree in Computer Science or related field

OT/SCADA or cybersecurity certifications preferred

Tools

Virtualization (VMware/Hyper-V)

Firewalls

Patch management

Job description

Cobb County-Marietta Water Authority is seeking an OT Systems & Cybersecurity Specialist to lead hands-on administration, security, and lifecycle management of OT computing systems supporting critical water infrastructure.

You will coordinate with IT, Security, SCADA, Engineering, and vendors to protect confidentiality, integrity, availability, and recoverability of OT systems while aligning with regulatory requirements and industry guidance.