OT Cybersecurity Specialist

Puffer-Sweiven; Stafford (TX); On-site; USD 110,000 - 160,000; Full time

Job summary

Puffer-Sweiven, a trusted provider of process control and automation solutions, seeks an experienced OT cybersecurity professional to lead on-site deployment and architecture reviews. You will work with DCS/PLC/SIS systems, implement threat monitoring, and guide customers through audits and compliance processes.

The role requires 5+ years in OT cybersecurity, strong ICS knowledge, and hands-on experience with Dragos/Nozomi/Claroty and industrial protocols.

Qualifications

• Bachelor's degree in Engineering, IT, Cybersecurity or related field.
• 5+ years of OT cybersecurity or industrial networking.
• Strong understanding of ICS and OT environments.
• Hands-on deployment of OT threat monitoring solutions (e.g. Dragos, Nozomi, Claroty).
• Knowledge of industrial protocols such as EtherNet/IP, Modbus TCP, PROFINET, OPC UA.

Responsibilities

• Lead on-site deployment and integration of OT cybersecurity and platform integration solutions including threat monitoring, secure remote access, endpoint protection, network monitoring, and data integration platforms.
• Identify critical logging and monitoring sources and develop corresponding monitoring strategies, baselines, alert tuning, correlation rules, and escalation paths.
• Lead security event analysis and investigate alerts and anomalies.
• Perform security architecture reviews and risk assessments of DCS, PLC, SIS, and supporting infrastructure.
• Develop OT security procedures, standards, and playbooks; support MOC.
• Support network segmentation, secure remote access, firewall configuration, and access control in industrial environments.
• Assist customers with cybersecurity documentation, policies, and procedures to support compliance and audits.
• Collaborate with project teams to integrate cybersecurity into automation project lifecycle phases.
• Serve as a technical advisor to customers, providing recommendations, best practices, and operational guidance.
• Support FAT, SAT, commissioning, and startup activities related to OT cybersecurity.
• Work closely with OEM and technology partners to deliver robust integrated solutions.
• Develop and deliver technical documentation, standards, and customer-facing reports.

Skills

OT cybersecurity

Industrial networking

ICS knowledge

Threat monitoring

Security architectures

Education

Bachelor's degree in Engineering, Information Technology, Cybersecurity

Tools

Dragos

Nozomi

Claroty

EtherNet/IP

Modbus TCP

PROFINET

OPC UA

Job description

For over 80 years, Puffer-Sweiven has set the standard in equipment and services for process control, automation, safety, and reliability. We help process-intensive facilities run more efficiently and safely by delivering quality products, technical support, and knowledgeable staff to implement the needed process solutions — with the goal of exceeding customer expectations. Our dedication brings the most advanced products and services to our customers throughout the Central and Gulf Coast regions of Texas.

As anEmersonImpact Partner, we offer a broad base of superior solutions including the top product lines for a given application. Our specialties at Puffer-Sweiven include:

• Process Control & Safety Systems
• Control Valves & Regulators
• Isolation Valves & Actuation
• Oil & Gas Automation
• Reliability Solutions & Services
• Pressure Management
• Specialty Pumps & Rotating Equipment
• Instrumentation

Duties and Responsibilities:

OT Cybersecurity

• Lead on-site deployment and integration of OT cybersecurity and platform integration solutions including threat monitoring, secure remote access, endpoint protection, network monitoring, and data integration platforms.
• Identify critical logging and monitoring sources and develop corresponding monitoring strategies, baselines, alert tuning, correlation rules, and escalation paths.
• Lead security event analysis and investigate alerts and anomalies.
• Perform security architecture reviews and risk assessments of DCS, PLC, SIS, and supporting infrastructure.
• Develop OT security procedures, standards, and playbooks; support MOC.
• Support network segmentation, secure remote access, firewall configuration, and access control in industrial environments.
• Assist customers with cybersecurity documentation, policies, and procedures to support compliance and audits.

Project & Customer Support

• Collaborate with project teams to integrate cybersecurity into automation project lifecycle phases.
• Serve as a technical advisor to customers, providing recommendations, best practices, and operational guidance.
• Support FAT, SAT, commissioning, and startup activities related to OT cybersecurity.
• Work closely with OEM and technology partners to deliver robust integrated solutions.
• Develop and deliver technical documentation, standards, and customer-facing reports.

Required Qualifications

• Bachelor's degree in Engineering, Information Technology, Cybersecurity, or a related field (or equivalent experience).
• 5+ years of experience in OT cybersecurity and/or industrial networking.
• Strong understanding of industrial control systems (ICS) and OT environments.
• Hands-on experience with industrial networking technologies, including managed switches, firewalls, and routers.
• Hands-on deployment experience of OT threat monitoring solutions (e.g. Dragos, Nozomi, Claroty).
• Knowledge of industrial protocols such as EtherNet/IP, Modbus TCP, PROFINET, OPC UA, and similar.
• Strong troubleshooting, analytical, and problem-solving skills.
• Ability to communicate effectively with operations, engineering, and IT stakeholders.

Preferred Qualifications

• Experience in oil & gas, chemicals, refining, power, or manufacturing industries.
• Experience with Emerson, Honeywell, and Rockwell systems.
• Cybersecurity certifications such as GICSP, GRID, CISSP, or ISA/IEC 62443.
• Experience with secure remote access solutions.

Equal Opportunity Employer
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