Freelance OT Security Engineer — Industrial ICS/SCADA

Proactive Global; Poland; On-site; PLN 111,000 - 221,000; Full time

Job summary

Proactive Global is seeking a Freelance OT Engineer with InfoSec knowledge to support OT infrastructure and cybersecurity initiatives across industrial environments. The contract is freelance with your own limited business setup, spanning Poland, the Netherlands, Portugal, Germany, Romania, and France (CDG only).

The role covers designing secure OT environments, managing network architectures, and leading incident response activities while aligning with IEC 62443 standards to ensure operational

Qualifications

• Experience as OT Engineer, Industrial Network Engineer, OT Security Engineer, or similar role.
• Strong knowledge of ICT, SCADA, PLCs, and industrial networks.
• Experience with OT network architecture, system maintenance, and lifecycle management.
• Understanding of OT cybersecurity principles and network segmentation.
• Familiarity with IEC 62443 or similar standards is desirable.

Responsibilities

• Design, implement, and maintain secure OT environments (ICT, SCADA, PLCs).
• Manage OT network architecture, lifecycle, asset maintenance, and patch strategies.
• Support redundancy planning, DR, and high-availability for production environments.
• Perform OT risk assessments, vulnerability management, and network segmentation.
• Implement and support secure remote access and OT cybersecurity controls.

Skills

OT Environments

Industrial Networks

Security Monitoring

IEC 62443

Incident Response

Cross-team Collaboration

Job description

Proactive Global is seeking a Freelance OT Engineer with InfoSec knowledge to support OT infrastructure and cybersecurity initiatives across industrial environments. The contract is freelance with your own limited business setup, spanning Poland, the Netherlands, Portugal, Germany, Romania, and France (CDG only).

The role covers designing secure OT environments, managing network architectures, and leading incident response activities while aligning with IEC 62443 standards to ensure operational