DV Cleared OT Cyber Security Engineer

CONVENTUS SOLUTIONS LIMITED; Location (WV); On-site; USD 129,855 - 170,389; Full time

Job summary

A leading cybersecurity firm is seeking a DV Cleared OT Cyber Security Engineer to ensure Operational Technology environments are protected. The role includes applying Secure by Design principles and conducting security design reviews within a critical Defence programme. Candidates must hold current Developed Vetting (DV) clearance. This position requires strong expertise in security architecture and a background in Defence or Critical National Infrastructure.

Qualifications

• Strong expertise in Secure by Design principles.
• Active UK DV Clearance is mandatory.
• Proven experience in security architecture and engineering.

Responsibilities

• Apply Secure by Design principles throughout the engineering lifecycle.
• Conduct threat modelling and risk assessments.
• Work closely with engineering and project teams.

Skills

Secure by Design principles

Operational Technology security

Threat modelling

Security design reviews

Risk management methodologies

Job description

Overview

Location: Aldermaston – Onsite 1-2 days per week.

Duration: 2 years

Rate: £600 per day inside IR35

We are seeking a DV Cleared OT Cyber Security Engineer with strong expertise in Secure by Design (SbD) principles to join a high-profile Defence programme. This is a critical role ensuring that Operational Technology (OT) environments are protected against evolving cyber threats while remaining resilient, safe, and compliant with security standards.

The successful candidate will be responsible for designing, implementing, and reviewing OT security controls across complex systems, supporting both engineering and assurance activities.

Key Responsibilities

• Apply Secure by Design principles throughout the engineering lifecycle.
• Conduct threat modelling, risk assessments, and security design reviews for OT environments.
• Work closely with engineering and project teams to embed security into delivery.
• Produce and review security documentation in line with MOD/Defence standards.
• Provide SME input on OT security to stakeholders across projects.
• Active UK DV Clearance (mandatory).
• Security Practitioner
• Strong background in Operational Technology.
• Demonstrable experience applying MOD/Nuclear Secure by Design (SbD) principles.
• Proven experience in security architecture and engineering within Defence or Critical National Infrastructure.
• Knowledge of risk management methodologies and security assurance.
• Experience with IEC/ISA 62443 standards.
• Familiarity with NIST 800-82, ISO 27001, and Defence Security standards (e.g., JSPs).
• Previous MOD/Defence and or Nuclear experience.

Due to the nature and urgency of the role, candidates are required to hold current Developed Vetting (DV) clearance, if you do not hold this, unfortunately we cannot sponsor. Please familiarise yourself with the security vetting process before applying.