Systems Engineer

+SC cleared role

+Hybrid working 2/3 days a week in Reading

+Inside IR35

+£80 - £83 ph

We are seeking an experienced Senior Systems Engineer to lead the delivery of model-based Product Security digital capabilities across a complex, regulated engineering environment.

Reporting to the Product Owner - Systems Engineering, you will define and implement the reference architectures, toolchains and technical baselines that enable end-to-end traceability across the Digital Thread - from security objectives and threat modelling through to verification, validation and assurance evidence.

This role replaces document-centric practices with authoritative, model-based security engineering across the full product lifecycle.

Key Responsibilities

Deliver and continuously improve Product Security digital toolchains, including:

Threat & risk modelling (STRIDE, STPA-Sec, TARA, attack trees)

Security requirements & controls modelling

SBOM & vulnerability management

Cryptography & key management governance

Configuration/change control

Verification & validation orchestration

Security/assurance case evidence

Define Product Security reference architecture and Digital Thread integrations

Own roadmap, backlog and delivery planning aligned to enterprise priorities

Establish governance, data standards and model quality controls

Lead vendor engagement, technology evaluations and service performance

Drive adoption of model-centric security engineering across programmes and suppliers

Ensure alignment with regulatory frameworks (DO-326A, IEC 62443, ISO/IEC 27001, ISO/SAE 21434, NIST, etc.)

Experience Required

10+ years delivering Product Security capabilities in aerospace, defence or other regulated/safety-critical sectors

Strong understanding of model-based security engineering and Digital Thread integration

Experience integrating modelling, ALM, CI/CD security services and verification pipelines

Proven stakeholder, supplier and budget management capability

ITIL and Project/Programme delivery experience (APM, PRINCE2, SAFe or similar)

SC clearance