OT Cyber Security Engineer – Secure IACS Architect

BILFINGER; Chesterfield; On-site; GBP 70,000 - 95,000; Full time

Job summary

Bilfinger UK is seeking an OT Cyber Security Engineer to join our Automation team in a permanent role. You will support project lifecycles, deliver secure-by-design IACS, and provide OT security consultancy across multiple client projects in the UK.

You will apply ISA/IEC 62443, strengthen cyber security controls, and help grow Bilfinger UK’s CSMS with practical engineering expertise and collaboration with project teams.

Qualifications

• Experience applying OT cyber security to PLC, DCS, RTU, SCADA and HMI systems.
• Design, implement and test OT security controls within IACS environments.
• Familiar with ISA/IEC 62443 standards and relevant security frameworks.

Responsibilities

• Support OT cyber security lifecycle activities and deliver secure-by-design IACS solutions.
• Contribute to OT cyber security consultancy projects and risk assessments.
• Help improve Bilfinger UK's CSMS and security documentation.

Skills

OT cyber security

ISA/IEC 62443

Network security

HIDS/EDR/IDS

Vulnerability assessments

Cyber security consultancy

Security governance

Education

Electronic/Electrical Engineering degree

Professional registration

Relevant OT cyber security certification

Tools

Stratix

Fortinet

Hirschmann

SIEM

EDR

IDS

Job description

Bilfinger UK is seeking an OT Cyber Security Engineer to join our Automation team in a permanent role. You will support project lifecycles, deliver secure-by-design IACS, and provide OT security consultancy across multiple client projects in the UK.

You will apply ISA/IEC 62443, strengthen cyber security controls, and help grow Bilfinger UK’s CSMS with practical engineering expertise and collaboration with project teams.