OT Security Specialist (m/f/d)

Kelvion Holding GmbH; Fareham; On-site; GBP 85,000 - 110,000; Full time

Job summary

Kelvion is seeking an OT Security Specialist to strengthen cyber security across manufacturing and OT environments. The role reports to the VP Information Security / CISO, and focuses on assessing OT risks, defining practical improvements and working with plant, engineering and IT teams to safeguard safety, production continuity and business resilience.

You will conduct IEC 62443 assessments, implement practical remediation, embed security into modernization projects, and enhance monitoring and

Qualifications

• Proven experience in cyber security for OT/ICS environments.
• Strong knowledge of industrial networks, segmentation and remote access.
• Experience with vulnerability management and incident response.

Responsibilities

• Assess OT assets, networks and controls against IEC 62443.
• Develop remediation plans and secure architectures.
• Embed OT security into plant modernisation and technology lifecycle.
• Improve monitoring, vulnerability management and incident readiness.
• Collaborate with plant, engineering, IT and external specialists.

Skills

Analytical skills

Communication

Stakeholder management

English proficiency

Travel willingness

Education

IEC 62443 training or certification

7+ years in cyber security/OT/ICS

Experience with IEC 62443 assessments

Fluent English; multilingual advantageous

Job description

OT Security Specialist (m/f/d)

Kelvion

Our mission is to lead the industrial transformation by championing innovation and sustainability. From optimising data centres and advancing hydrogen production to revolutionising refrigeration and HVAC systems, our mission-critical thermal solutions empower industries around the globe. United as “One Kelvion,” our global team delivers innovative solutions that drive customer success and support a sustainable future.
Together, We Shape the Future

Core Responsibilities

The OT Security Specialist strengthens cyber security across Kelvion’s manufacturing and operational technology environments. Reporting to the VP Information Security / CISO, the role assesses OT risks, defines practical improvements and works with plant, engineering and IT teams to protect safety, production availability and business continuity!

• Assess OT assets, networks and controls across manufacturing sites, primarily against IEC 62443.
• Turn findings into prioritised remediation plans, standards and secure architectures.
• Embed OT security into plant modernisation, automation and technology lifecycle decisions.
• Improve monitoring, vulnerability management, secure remote access, backup, recovery and incident readiness.
• Partner with plant, engineering, IT and external specialists; track progress and elevate significant risks.

Education and Qualifications

• Degree in cyber security, IT, automation, engineering or equivalent professional experience.
• IEC 62443 training or certification strongly preferred; GICSP, CISSP, CISM or comparable credentials are desirable.
• At least 7 years of relevant cyber security, automation, controls or infrastructure experience, including 3 years in OT/ICS security.
• Proven experience with IEC 62443 assessments and practical remediation in manufacturing environments.
• Strong knowledge of industrial networks, segmentation, remote access, vulnerability management, monitoring and incident response.
• Fluent business English; additional European languages are an advantage.
• Strong analytical, communication and stakeholder-management skills, with the ability to work independently across international sites.
• Willingness to travel regularly to Kelvion manufacturing locations.