Public Sector Resourcing
Lead Security Architect

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Lead Security Architect (Inside IR35) - 6 Month Contract
On behalf of the MOD, we are looking for a Lead Security Architect (Inside IR35) for a 6-month contract. Hybrid working with 1 day per week in Corsham or Bristol.
About the Ministry of Defence (MOD)
The Ministry of Defence (MOD) is a central government department with a mission to protect our country and provide the ultimate guarantee of its security and independence, as well as helping to protect its values and interests abroad.
The MOD is one of the biggest public procurement organizations in Europe and the single largest customer for UK industry. It currently manages approximately £20 billion of spend on capital investments in equipment and infrastructure every year. Over the next decade the MOD is committed to spending over £190 billion on equipment and support. The MOD’s customers include both the armed forces and national security agencies, and it has a diverse range of requirements, including military fighting vehicles, education services, nuclear submarines, and facilities management.
About the Role
As a Lead Security Architect, your main responsibilities will be to:
- Interact with senior stakeholders across departments.
- Reach and influence a wide range of people across larger teams and communities.
- Understand the impact of decisions, balancing requirements and deciding between approaches.
- Produce particular patterns and support quality assurance.
- Be the point of escalation for architects in lower-grade roles.
- Lead the technical design of systems and services.
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Essential Requirements


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- An active SC Clearance is an essential requirement for this role; as a minimum, you must be willing and eligible to undergo checks. (Please note, due to the exceptional requirements of this position, preference may be given to candidates who meet all of the essential criteria and hold active security clearance.)
- Security Architecture & Framework Expertise.
- Experience of NCSC Common Architecture Framework, NCSC Architectural Principles, and NCSC Cloud Security Guidance.
- Security by Design and Zero Trust architectural patterns experience.
- Experience in a similar role within a Defence / Public Sector environment.
- You can effectively translate and accurately communicate security and risk implications across technical and non-technical stakeholders.
- You can design and review system architectures through the development of patterns and principles.
- You can work with higher impact or more complex risks and advise on the impact of these and whether this is within risk tolerance.
- You can contribute to and inform developments on security properties in technology.
- You have strong knowledge of system architectures and can understand and articulate the impact of vulnerabilities on existing and future designs, systems, and how easy or difficult it will be to exploit these vulnerabilities.
Desirable Requirements
- Technical / Solution / Enterprise Architecture experience.
- GDS experience.
- Agile delivery experience.
Important Notes
- This role can only be worked within the UK and not overseas.
- Disability Confident: As a member of the Disability Confident Scheme, the MOD guarantees to interview all candidates who have a disability and who meet all the essential criteria for the vacancy. In cases where we have a high volume of candidates who have a disability who meet all the essential criteria, we will interview the best candidates from within that group. This scheme encourages candidates with a disability and/or neurodivergence to apply. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.
- Armed Forces Covenant: The MOD guarantees to interview veterans or spouses / partners of military personnel who meet all the essential criteria for the vacancy. In cases where we have a high volume of ex-military candidates / military spouses or partners, who meet all of the essential criteria, we will interview the best candidates from within that group. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.
- In applying for this role, you acknowledge the following: "this role falls in scope of the Off Payroll Working in the Public Sector legislation. Any rates of payment quoted will reflect the gross rate per day for the assignment and will be subject to appropriate taxes and statutory costs. As such, the payment to the intermediary and your income resulting from this contract will be different."
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