Contractor Security Engineer — PKI & ISO27001 Focus

General Dynamics Mission Systems, Inc; Blackwood; On-site; GBP 65,000 - 101,000; Full time

Job summary

General Dynamics Mission Systems UK is seeking a Security Engineer (Contractor) to work on a CIS and Cyber project. You will provide security domain expertise, ensure Security influences engineering decisions, and contribute to PKI development and related documentation.

The role requires experience with security architectures and accreditation processes; familiarity with IS1/IS2, ISO27001, NIST/NCIA/NIS Directive standards is preferred. Availability to start in Nov/Dec 2026.

Qualifications

• Experience in large, complex systems across all phases of a project lifecycle in a security context and producing security designs that have been accredited and supported.
• Experience of PKI and its implementation within complex systems.
• Experience implementing and complying with Security Architectural Frameworks listed (e.g., IS1/IS2, ISO27001, NIST 800-53, NIST CSF, NCIA, NIS Directive).

Responsibilities

• Work with Technical Project Managers and Solution Design Team to create required security deliverables.
• Provide security authority and guidance to the project, ensuring Security is part of all Engineering decisions.
• Provide expertise in PKI and development of PKI aspects of the solution.
• Support generation and maintenance of project level security documentation.
• Develop and support assurance for all project Security outputs.
• Hands-on experience of Model Based System Engineering.
• Development and implementation of open architectures.
• Deliver a coherent, integrated, and layered Security Architecture.
• Ensure risks and issues are within the Accreditors risk appetite through mitigation.
• Liaise with customer Security representative and provide artefacts for SyTLMs.
• Traceability of security design to requirements.
• Assist in secure configuration and integration activities.
• Collaborate with wider Design and Test teams to ensure security design compatibility and evidence from security tests.

Job description

General Dynamics Mission Systems UK is seeking a Security Engineer (Contractor) to work on a CIS and Cyber project. You will provide security domain expertise, ensure Security influences engineering decisions, and contribute to PKI development and related documentation.

The role requires experience with security architectures and accreditation processes; familiarity with IS1/IS2, ISO27001, NIST/NCIA/NIS Directive standards is preferred. Availability to start in Nov/Dec 2026.