OT Cyber Security Engineer

Stevenage

An exciting opportunity for an OT Cyber Security Engineer, you'll bring visibility and resilience to live operational environments - integrating manufacturing networks into cyber monitoring, protecting availability and safety, and turning complex OT systems into something the SOC and the business can confidentially defend.

Salary: £50,000 - £60,000 depending on experience
Dynamic (hybrid) working: 3 days per week on-site due to workload classification

Security Clearance: British Citizen or a Dual UK national with British citizenship.

This role will require SC Clearance and applicants will be required to undergo DV clearance if they do not already possess it. Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a minimum and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS) and a Security Check (SC) clearance, which are managed by the MBDA Personnel Security Team.

What we can offer you:
Company bonus: Up to £2,500 (based on company performance and will vary year to year)
Pension: maximum total (employer and employee) contribution of up to 14%
Overtime: opportunity for paid overtime
Flexi Leave: Up to 15 additional days
Flexible working: We welcome applicants who are looking for flexible working arrangements
Enhanced parental leave: offers up to 26 weeks for maternity, adoption and shared parental leave -enhancements are available for paternity leave, neonatal leave and fertility testing and treatments
Facilities: Fantastic site facilities including subsidised meals, free car parking and much more...
Healthcare Cash Plan: The Healthcare Cash Plan benefit provides the option to claim cash back on everyday healthcare expenses such as optical, dental, health and wellbeing and moreThe opportunity:

We have an opportunity within MBDA UK's Cyber Security function for an OT Cyber Security Engineer supporting the secure integration of OT control network and wider Operational Technology environments into central cyber monitoring and governance.

This role is focussed on OT Asset visibility, technical integration, and safe data onboarding, ensuring MBDA maintains an authoritative, accurate understanding of its operational technology estate while protecting availability and safety.

The OT Cyber Security Engineer will act as a hands-on technical contributor, working under the OT Cyber Security Lead, and collaborating closely with Networks, SOC Engineering, IT Infrastructure, Facilities Management, and Manufacturing Teams.

OT Asset Visibility & Inventory

Create, maintain and continuously improve and authoritative OT asset inventory covering PLCs, HMI's, SCADA systems, historians, and associate infrastructure. Identify asset ownership, criticality, and operational constraints. Ensure asset records support incident response, risk management, and audit requirements.

OT Control Network Integration & Data Onboarding

Support the onboarding of OT control networkenvironments into enterprise cyber monitoring. Liaise with Network Engineering and SOC Engineering teams to identify appropriate data sources and telemetry points. Validate that data collection is non-intrusive and production-safe.

Technical Liaison

Act as the OT technical interface between Cyber Security and operational stakeholders. Translate OT system behaviours and constraints into actionable security context. Support change activities related to connectivity and digital interfaces in OT environments.

Operational Support.

Provide OT asset context during cyber incidents and investigations. Support security assurance, testing and readiness activities as directed by the OT Cyber Security Lead.

What we're looking for from you:
Operational Technology / ICS knowledge
Must be able to identify PLCs, HMIs, SCADA and historians, explain their function in the process and articulate operational and safety constraints when discussing security controls

OT Networking & Segmentation
Must be able to read and interpret OT network diagrams, understand segmentation and data flows, and explain where monitoring can be safely places without impacting availability (e.g. boundaries)

Cyber Security Fundamentals in OT Contexts
Must be able to apply cyber controls proportionately in OT environments, explaining trade-offs between confidentiality, integrity, availability and safety and challenge IT-centric controls

Incident Response Support (OT)
Must be able to provide rapid, accurate OT context during incidents, explain "do-not-touch" systems, and support triage decisions without acting as incident commander

Asset Management & Visibility
Must be able to build and maintain authoritative OT asset register, validate asset accuracy with service owners and keep records current following change or investigation activity.

Desirable Certifications (one of, or equivalent):

• GICSP (GIAC Global Industrial Cyber Security Professional)
  
• IEC 62443 Training / Cert
  
• SANS ICS410 / ICS 515
  
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