OT Cyber Security Engineer in 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 and Working Arrangements

• 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.

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 more

The 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.

Responsibilities

• OT Asset Visibility & Inventory: Create, maintain and continuously improve an authoritative OT asset inventory covering PLCs, HMIs, 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 network environments 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

• 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 placed 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 challenging 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

Our company: Peace is not a given, Freedom is not a given, Sovereignty is not a given. MBDA is a leading defence organisation. We are proud of the role we play in supporting the Armed Forces who protect our nations. We partner with governments to work together towards a common goal, defending our freedom. We are proud of our employee-led networks, examples include: Gender Equality, Pride, Menopause Matters, Parents and Carers, Armed Forces, Ethnic Diversity, Neurodiversity, Disability and more… We recognise that everyone is unique, and we encourage you to speak to us should you require any advice, support or adjustments throughout our recruitment process.