Principal Security Architect

Public Sector Resourcing•London Britain Township, PA

3d•Remote

About The Position

On behalf of the Ministry of Defence, this is a contract role until 31 March 2027, based hybrid in Corsham or London with occasional onsite attendance as required. The position can only be worked within the UK, not overseas. The posting also lists the workplace type as Remote. The Principal Security Architect will shape and assure the security of complex MOD systems and services. The role provides strategic security leadership, influences enterprise-level decisions, and works with senior stakeholders to embed security across major transformation programmes. Across multiple projects and technologies, the postholder will drive security best practice, support risk-based decision-making, and help define the organisation’s long-term security architecture vision. SC clearance is essential. Candidates must at minimum be willing and eligible to undergo checks; candidates with active clearance may be preferred because of the short-term nature of the role and the need for a postholder to be in situ quickly. The role falls within the Off Payroll Working in the Public Sector legislation; any quoted payment rate is a gross daily rate and is subject to applicable taxes and statutory costs.

Requirements

Extensive Security Architecture experience in complex enterprise environments.
At least 5 years’ experience leading the secure design of products, services and solutions.
Experience designing, reviewing and assuring secure systems and architectures.
Strong understanding of security risk management, governance, compliance and assurance.
Ability to influence senior business and technical stakeholders and communicate complex security concepts effectively.
Experience defining security strategy, standards and governance across large programmes, organisations or transformation initiatives.
Ability to lead risk-based security decision-making and act as a trusted advisor to senior stakeholders.
Deep cyber security expertise across multiple security domains.
Must be willing and eligible to undergo SC clearance checks; active clearance may be preferred.
Must be able to work within the UK and not overseas.

Nice To Haves

Public sector or defence experience.
CCSP, TOGAF, SABSA or equivalent certification or qualification.
Active security clearance may be preferred.

Responsibilities

Work on projects with high strategic impact, setting a long-term strategy applicable across the organisation.
Communicate with senior stakeholders and define the vision, principles and strategy for security architects.
Recommend security designs across multiple projects or technologies, up to organisational or inter-organisational level.
Maintain and apply deep, evolving technical expertise, acting as an exemplar.
Make and influence important business and architectural decisions.
Research, identify, validate and adopt new technologies and methodologies.
Solve unprecedented issues and problems as a recognised expert.
Further the profession by demonstrating and sharing best practice within and outside the organisation.
Shape and assure security for complex systems and services across the MOD.
Drive security best practice, support risk-based decision-making and help define the long-term security architecture vision.