OT Security Engineer

Overview

A proactive and detail-oriented OT Security Specialist with strong analytical mindset and practical/hands‑on experience in securing industrial environments. This professional excels at understanding and managing complex and legacy OT infrastructures, and is able to advocate efficient and transparent solutions ensuring they become secure.

With foundational expertise in OT network technologies and firewall configurations, this specialist can cooperate with other teams—such as operations, IT, and engineering—to assess risks, strengthen network segmentation, and maintain a resilient OT security posture.

• In-depth knowledge of OT security and networking in industrial environments (e.g., SCADA, PLCs, DCS)
• Skilled in analyzing and mapping complex or legacy OT networks
• Hands‑on experience with segmentation and IP (re‑)numbering of OT networks
• Experienced with risk assessments and developing mitigation strategies
• Practical understanding of firewalls, network segmentation, and secure architecture principles
• Understanding of the Purdue model
• Hands‑on experience in implementation of at least one of the following technologies (OT‑firewalling, automated network monitoring, network restructuring)
• Proficient in continuous monitoring using SNMP, Net Flow, or similar protocols
• Works cross‑functionally with IT/OT teams to align security with production needs
• Knowledge of Fortinet firewalls configuration
• Experience with Active Directory (AD) management
• Hands‑on experience with Nozomi Networks solutions (e.g., Guardian) for network traffic analysis, anomaly detection, and asset visibility in industrial/OT environments is a plus
• Cisco certificate is a plus
• Palo Alto firewall configuration is a plus
• Travel required to customer sites during key project phases (e.g., commissioning, testing, audits). Flexibility for short‑term international travel is essential

Preferred location is Houston, Texas

At AG Solution, we build intelligent solutions for the process industry, combining automation, process control, data management, and MES/MOM systems to help manufacturers reach operational excellence.

Now part of the Saphir Group, we are one of Europe’s leading Industry 4.0 partners, with more than 400 engineers and consultants working across Europe, the UK, and the US.

Join us and work on meaningful projects that drive efficiency, sustainability, and digital transformation worldwide.