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General Dynamics UK

UK defense contractor delivering C4I, AFV

Principal Product Security Engineer

Full-Time
£59.2k - £80k/yr
Expert
Bachelor's
Hastings, UK
HybridAt least three days per week on site.
CybersecuritySecurity Engineering & Architecture

About the job

Requirements
  • Significant experience developing or leading product-security or systems-security architecture for complex engineered products.
  • Knowledge of Secure by Design principles and relevant product and systems security standards, ideally gained within defence, aerospace, or another safety-critical engineering environment.
  • Strong experience defining security requirements and secure-by-design approaches at system or product level.
  • Experience leading threat modelling, security risk assessment, and vulnerability-analysis activities.
  • Experience providing technical leadership and making security architecture decisions across multidisciplinary engineering teams.
  • Knowledge of cryptographic principles and their application within secure products or systems.
  • Experience engaging with customers, partners, and assurance stakeholders on complex security matters.
  • Ability to translate security threats and risks into practical engineering requirements and design decisions.
  • Degree-level qualification in engineering, computer science, cyber security, or a related discipline, or equivalent relevant experience.
Responsibilities
  • Own and lead the product-security architecture for complex airborne mission systems.
  • Define the security strategy, requirements, and secure-by-design approach across the programme lifecycle.
  • Lead threat modelling, vulnerability analysis, security risk assessment, and accreditation activities.
  • Provide technical authority and informed security advice across systems, software, and hardware engineering.
  • Make and communicate proportionate security decisions, balancing operational capability, technical risk, and programme constraints.
  • Lead engagement with customers, programme partners, and relevant assurance stakeholders.
  • Review security evidence and ensure that proposed designs and mitigations support the required assurance outcomes.
  • Coach and provide technical guidance to security and multidisciplinary engineering teams.
  • Drive the adoption of consistent product-security methods, tools, and good practice across the programme.
Desired Qualifications
  • Experience in aerospace, defence, avionics, mission systems, embedded systems, or other safety-critical products.
  • Experience acting as a product-security technical authority, security architect, or engineering lead.
  • Knowledge of accreditation, certification, and security-assurance approaches within regulated environments.
  • Experience coaching or technically leading security engineers.
  • Familiarity with digital engineering, model-based systems engineering, or requirements-management tools.
  • Experience working with or familiarity with artificial intelligence and machine-learning models.

About the company

General Dynamics UK delivers defence technology and services to the UK MoD, including C4I communications, Armoured Fighting Vehicle capability, and avionics systems. Its products work by designing and integrating end-to-end defence systems that plan, deploy, manage and monitor battlefield information, with systems like Bowman, EvO, AJAX, and aircraft avionics. The company differentiates itself through long-standing MoD collaboration combined with in-house design and manufacturing to deliver large, end-to-end programs from a UK base in South Wales. Its goal is to equip the UK Armed Forces with reliable, integrated communications, combat-vehicle, and avionics systems for current operations and future capability programs.

Company Size

201-500

Company Stage

Growth Equity (Non-Venture Capital)

Total Funding

$70M

Headquarters

Blackwood, United Kingdom

Founded

1962

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Simplify Jobs

Simplify's Take

What believers are saying

  • UK resumed Ajax tests in April 2026, restoring deliveries toward 589 vehicles ordered.
  • The 2026 Light Mobility Vehicle consortium with Ford and Ricardo widens revenue beyond Ajax.
  • The 2026 U.S. Navy fire-control award supports UK strategic-deterrent work through 2033.

What critics are saying

  • Ajax safety investigations after November 2025 vomiting incidents threaten cancellations and reputational damage.
  • Three active Ajax investigations in January 2026 expose program stoppages and acceptance delays.
  • A failed LMV bid in 2027 leaves South Wales dependence on one troubled platform.

What makes General Dynamics UK unique

  • Merthyr Tydfil and Oakdale manufacture Ajax, anchoring Britain’s only sovereign armored-vehicle line.
  • Mission Systems supports Royal Navy deterrence through P-8A analysis and submarine fire-control systems.
  • General Dynamics UK sells into programs with deep MoD lock-in and long sustainment tails.

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Benefits

  • Hybrid Work Options

Growth & Insights

6 month growth

-2%

1 year growth

-2%

2 year growth

-2%