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Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector)

ExperiencedNo visa sponsorship
Deloitte logo

at Deloitte

Big Four

Posted 3 months ago

No clicks

Senior Manager, Security Architect responsible for designing technical security solutions and leading security engagements for Defence & Security clients within the Government and Public Sector. You will develop and maintain security architectures, articulate design decisions to stakeholders, and work with security SMEs to solve business problems, ensuring alignment with policy frameworks and regulatory requirements. The role involves staying current with emerging threats and technologies, conducting risk and vulnerability assessments, and performing security audits. Candidates must be willing and eligible to obtain UK security clearance to Security Check (SC) or Developed Vetting (DV) level.

Compensation
Not specified GBP

Currency: £ (GBP)

City
Manchester, Birmingham, Edinburgh, Cardiff, Bristol, London, Newcastle
Country
United Kingdom

Full Job Description

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Deloitte

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Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector)

Basic information

Location
Aberdeen, Belfast, Birmingham, Bristol, Cambridge, Cardiff, Edinburgh, Gatwick, Glasgow, Guernsey, Ipswich, Isle of Man, Jersey, Leeds, Liverpool, London, Manchester, Milton Keynes, Newcastle, Nottingham, Port Talbot, Reading, Southampton, St Albans
Business Line
Technology & Transformation
Job Type
Permanent / FTC
Date published
10-Feb-2026
Req #
22214

Job description

Connect to your Industry

Do you want to be at the heart of some of the biggest and most ambitious programmes undertaken to keep our country safe?

We are proud of the impact we have with Defence and Security clients, the strength of our relationships, and the variety of our skills and expertise that we bring to help them achieve their mission.

Were growing our teams across all of Technology and Transformation. If you are cleared to SC or DV level, or willing and eligible to obtain this, and want to grow your career in this sector, we are very keen to hear from you.

Connect to your career at Deloitte     

Deloitte drives progress. Using our vast range of expertise, we help our clients' become leaders wherever they choose to compete. To do this, we invest in outstanding people. We build teams of future thinkers, with diverse talents and backgrounds, and empower them all to reach for and achieve more.

What brings us all together at Deloitte? Its how we approach the thousands of decisions we make every day. How we behave, our beliefs and our attitudes. In other words: our values. Whatever we do, wherever we are in the world, we lead the wayserve with integritytake care of each otherfoster inclusion, and collaborate for measurable impact. These five shared values lead every decision we make and action we take, guiding us to deliver impact how and where it matters most.

Connect to your opportunity

A Security Architect operate as a senior member of the team, responsible for the design of technical security solutions, maintains documentation, develops architecture patterns and approaches for new technologies and solutions.

The Security Architect will lead the technical engagement and bring together technical security SMEs such as Identity, Security Testing and Privacy to solve the business problem.

As a senior member of the technical team, security architects must develop relationships with key stakeholders, understand a client's security policy framework and design solutions that will meet our client requirements.

Our projects vary greatly and your responsibility as a security architect will differ based on the focus of the client engagement and your skillset, but could include and may require you to:

  • Understand clients policies and security landscapes and create vision, principles and architecture solutions
  • Articulate, communicate, and justify design decisions to non-technical stakeholders
  • Maintain relationships with senior technical stakeholders
  • Learn new technical solutions from vendors and articulate how they solve client problems by providing the technical design to be adopted (Architecture Patterns)
  • Collaborate with vendors and third-party partners to ensure the security of external systems and data exchanges.
  • Provide specialist technical advice, recommended approaches, recommended security controls & identify solutions that meet client business objectives.
  • Develop and maintain security architectures, ensuring alignment with business goals, industry standards, established patterns and regulatory requirements.
  • Stay up to date with emerging security threats, technologies, and industry best practices, and provide recommendations for improvement.
  • Conduct security audits and assessments to identify gaps and recommend remediation actions.
  • Conduct risk assessments and scoping vulnerability assessments to identify potential security threats and vulnerabilities.

Connect to your skills and professional experience

All applicants must be willing and eligible to apply for and obtain UK security clearance to Security Check (SC) or Developed Vetting (DV) level, if not holding an existing clearance.

Candidates will be able demonstrate relevant knowledge & experience through a combination of qualifications and evidence of work history such as:

  • Information Security qualification (or equivalent) e.g. CISSP.
  • In-depth knowledge of security frameworks, standards, and best practices (e.g., ISO 27001, NIST, CIS).
  • Experience as a Security Architect or in a similar role, with a strong track record of designing and implementing security controls and/or solutions and leading technical teams.
  • Experience with architecture methodology such as TOGAF or SABSA
  • Experience of threat and risk modelling
  • Strong understanding of network security, encryption, authentication, and access control mechanisms.
  • Experience with security technologies such as firewalls, intrusion detection/prevention systems, security information and event management (SIEM) systems, and vulnerability assessment tools, and their configuration options.
  • Familiarity with cloud security principles and best practices, including securing cloud-based infrastructure and services (AWS, Azure or Google)
  • Experience of DevSecOps
  • Experience of research in technology trends and ways to secure those technologies.
  • Experience with automated deployment techniques and CI/CD pipelines.
  • Experience working in or with Government organisations, including the handling of assets subject to the Government Security Classification Policy.
  • Knowledge of Government cyber requirements related to Defence and Security e.g. Secure by Design, JSP 440.

Connect to your business - Technology and Transformation

Distinctive thinking, deep expertise, innovation and collaborative working. Thats what connects us. Thats what makes us Deloitte. If you want to help solve some of the biggest tech and transformational challenges around, join us. Together, well make an impact that matters.

Cyber

The modern world is more complex than ever before, and we are navigating an ever-changing landscape. We help clients to operate with resilience and grow with confidence to secure success and minimise risk. 

Personal independence

Regulation and controls are standard practice in our industry and Deloitte is no exception. These controls provide important legal protection for both you and the firm. We are subject to a number of audit regulations, one of which requires that certain colleagues abide by specific personal independence constraints (e.g., in relation to any financial interests and employment relationships). This can mean that you and your "Immediate Family Members" are not permitted to hold certain financial interests (shares, funds, bonds etc.) with audit clients of the firm, and also prohibitions on certain employment relationships (e.g., you are not permitted to hold a secondary employment role with SEC audit clients of the firm whilst being employed by the firm). The recruitment team will provide further detail as you progress through the recruitment process or you can contact the Independence team upon request.

Connect with your colleagues

The opportunities to make a difference here are huge. Were constantly encouraged to come up with ideas, so a lot of what we do to drive change comes from within our own workforce. -  Gurpal, T&T

Innovation is at the heart of everything we do, so were using the latest technologies to constantly improve how we deliver our projects and bring insights to our clients. It means Im always learning. -  Gurpal, T&T

Our hybrid working policy

Youll be based in one of our UK offices with hybrid working.

At Deloitte we understand the importance of balancing your career alongside your home life. Thats why well support you to work flexibly through our hybrid working policy. Depending on the requirements of your role, youll have the opportunity to work in your local office, virtual collaboration spaces, client sites and remotely. Youll get the chance to meet face to face when needed, while you collaborate and learn from colleagues, share your experiences, and build the relationships that will fuel your career and prioritise your wellbeing. Please check with your recruiter for the specific working requirements that may apply for your role.

Our commitment to you

Making an impact is more than just what we do: its why were here. So we work hard to create an environment where you can experience a purpose you believe in, the freedom to be you, and the capacity to go further than ever before.

We want you. The true you. Your own strengths, perspective and personality. So were nurturing a culture where everyone belongs, feels supported and heard, and is empowered to make a valuable, personal contribution. You can be sure well take your wellbeing seriously, too. Because its only when youre comfortable and at your best that you can make the kind of impact you, and we, live for.

Your expertise is our capability, so well make sure it never stops growing. Whether its from the complex work you do, or the people you collaborate with, youll learn every day. Through world-class development, youll gain invaluable technical and personal skills. Whatever your level, youll learn how to lead.

Connect to your next step

A career at Deloitte is an opportunity to develop in any direction you choose. Join us and youll experience a purpose you can believe in and an impact you can see. Youll be free to bring your true self to work every day. And youll never stop growing, whatever your level.

Discover more reasons to connect with us, our people and purpose-driven culture at deloitte.co.uk/careers

WPFULL SLTTECH BACYBER LOCOFFICE

Apply
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2026. See Terms & conditions for more information.

Deloitte LLP is the United Kingdom affiliate of Deloitte NSE LLP, a member firm of Deloitte Touche Tohmatsu Limited, a UK private company limited by guarantee (DTTL). DTTL and each of its member firms are legally separate and independent entities. DTTL and Deloitte NSE LLP do not provide services to clients. Please see About Deloitte to learn more about our global network of member firms.

Deloitte LLP is a limited liability partnership registered in England and Wales with registered number OC303675 and its registered office at 1 New Street Square, London EC4A 3HQ, United Kingdom.

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SIMILAR OPPORTUNITIES

No similar opportunities available at the moment.

Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector)

Compensation

Not specified GBP

City: Manchester, Birmingham, Edinburgh, Cardiff, Bristol, London, Newcastle

Country: United Kingdom

Deloitte logo
Big Four

3 months ago

No clicks

at Deloitte

ExperiencedNo visa sponsorship

Senior Manager, Security Architect responsible for designing technical security solutions and leading security engagements for Defence & Security clients within the Government and Public Sector. You will develop and maintain security architectures, articulate design decisions to stakeholders, and work with security SMEs to solve business problems, ensuring alignment with policy frameworks and regulatory requirements. The role involves staying current with emerging threats and technologies, conducting risk and vulnerability assessments, and performing security audits. Candidates must be willing and eligible to obtain UK security clearance to Security Check (SC) or Developed Vetting (DV) level.

Full Job Description

Skip to content

Deloitte

Menu
  • Search jobs
  • Join our Talent Community
  • Why join Deloitte?
  • Login

Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector)

Basic information

Location
Aberdeen, Belfast, Birmingham, Bristol, Cambridge, Cardiff, Edinburgh, Gatwick, Glasgow, Guernsey, Ipswich, Isle of Man, Jersey, Leeds, Liverpool, London, Manchester, Milton Keynes, Newcastle, Nottingham, Port Talbot, Reading, Southampton, St Albans
Business Line
Technology & Transformation
Job Type
Permanent / FTC
Date published
10-Feb-2026
Req #
22214

Job description

Connect to your Industry

Do you want to be at the heart of some of the biggest and most ambitious programmes undertaken to keep our country safe?

We are proud of the impact we have with Defence and Security clients, the strength of our relationships, and the variety of our skills and expertise that we bring to help them achieve their mission.

Were growing our teams across all of Technology and Transformation. If you are cleared to SC or DV level, or willing and eligible to obtain this, and want to grow your career in this sector, we are very keen to hear from you.

Connect to your career at Deloitte     

Deloitte drives progress. Using our vast range of expertise, we help our clients' become leaders wherever they choose to compete. To do this, we invest in outstanding people. We build teams of future thinkers, with diverse talents and backgrounds, and empower them all to reach for and achieve more.

What brings us all together at Deloitte? Its how we approach the thousands of decisions we make every day. How we behave, our beliefs and our attitudes. In other words: our values. Whatever we do, wherever we are in the world, we lead the wayserve with integritytake care of each otherfoster inclusion, and collaborate for measurable impact. These five shared values lead every decision we make and action we take, guiding us to deliver impact how and where it matters most.

Connect to your opportunity

A Security Architect operate as a senior member of the team, responsible for the design of technical security solutions, maintains documentation, develops architecture patterns and approaches for new technologies and solutions.

The Security Architect will lead the technical engagement and bring together technical security SMEs such as Identity, Security Testing and Privacy to solve the business problem.

As a senior member of the technical team, security architects must develop relationships with key stakeholders, understand a client's security policy framework and design solutions that will meet our client requirements.

Our projects vary greatly and your responsibility as a security architect will differ based on the focus of the client engagement and your skillset, but could include and may require you to:

  • Understand clients policies and security landscapes and create vision, principles and architecture solutions
  • Articulate, communicate, and justify design decisions to non-technical stakeholders
  • Maintain relationships with senior technical stakeholders
  • Learn new technical solutions from vendors and articulate how they solve client problems by providing the technical design to be adopted (Architecture Patterns)
  • Collaborate with vendors and third-party partners to ensure the security of external systems and data exchanges.
  • Provide specialist technical advice, recommended approaches, recommended security controls & identify solutions that meet client business objectives.
  • Develop and maintain security architectures, ensuring alignment with business goals, industry standards, established patterns and regulatory requirements.
  • Stay up to date with emerging security threats, technologies, and industry best practices, and provide recommendations for improvement.
  • Conduct security audits and assessments to identify gaps and recommend remediation actions.
  • Conduct risk assessments and scoping vulnerability assessments to identify potential security threats and vulnerabilities.

Connect to your skills and professional experience

All applicants must be willing and eligible to apply for and obtain UK security clearance to Security Check (SC) or Developed Vetting (DV) level, if not holding an existing clearance.

Candidates will be able demonstrate relevant knowledge & experience through a combination of qualifications and evidence of work history such as:

  • Information Security qualification (or equivalent) e.g. CISSP.
  • In-depth knowledge of security frameworks, standards, and best practices (e.g., ISO 27001, NIST, CIS).
  • Experience as a Security Architect or in a similar role, with a strong track record of designing and implementing security controls and/or solutions and leading technical teams.
  • Experience with architecture methodology such as TOGAF or SABSA
  • Experience of threat and risk modelling
  • Strong understanding of network security, encryption, authentication, and access control mechanisms.
  • Experience with security technologies such as firewalls, intrusion detection/prevention systems, security information and event management (SIEM) systems, and vulnerability assessment tools, and their configuration options.
  • Familiarity with cloud security principles and best practices, including securing cloud-based infrastructure and services (AWS, Azure or Google)
  • Experience of DevSecOps
  • Experience of research in technology trends and ways to secure those technologies.
  • Experience with automated deployment techniques and CI/CD pipelines.
  • Experience working in or with Government organisations, including the handling of assets subject to the Government Security Classification Policy.
  • Knowledge of Government cyber requirements related to Defence and Security e.g. Secure by Design, JSP 440.

Connect to your business - Technology and Transformation

Distinctive thinking, deep expertise, innovation and collaborative working. Thats what connects us. Thats what makes us Deloitte. If you want to help solve some of the biggest tech and transformational challenges around, join us. Together, well make an impact that matters.

Cyber

The modern world is more complex than ever before, and we are navigating an ever-changing landscape. We help clients to operate with resilience and grow with confidence to secure success and minimise risk. 

Personal independence

Regulation and controls are standard practice in our industry and Deloitte is no exception. These controls provide important legal protection for both you and the firm. We are subject to a number of audit regulations, one of which requires that certain colleagues abide by specific personal independence constraints (e.g., in relation to any financial interests and employment relationships). This can mean that you and your "Immediate Family Members" are not permitted to hold certain financial interests (shares, funds, bonds etc.) with audit clients of the firm, and also prohibitions on certain employment relationships (e.g., you are not permitted to hold a secondary employment role with SEC audit clients of the firm whilst being employed by the firm). The recruitment team will provide further detail as you progress through the recruitment process or you can contact the Independence team upon request.

Connect with your colleagues

The opportunities to make a difference here are huge. Were constantly encouraged to come up with ideas, so a lot of what we do to drive change comes from within our own workforce. -  Gurpal, T&T

Innovation is at the heart of everything we do, so were using the latest technologies to constantly improve how we deliver our projects and bring insights to our clients. It means Im always learning. -  Gurpal, T&T

Our hybrid working policy

Youll be based in one of our UK offices with hybrid working.

At Deloitte we understand the importance of balancing your career alongside your home life. Thats why well support you to work flexibly through our hybrid working policy. Depending on the requirements of your role, youll have the opportunity to work in your local office, virtual collaboration spaces, client sites and remotely. Youll get the chance to meet face to face when needed, while you collaborate and learn from colleagues, share your experiences, and build the relationships that will fuel your career and prioritise your wellbeing. Please check with your recruiter for the specific working requirements that may apply for your role.

Our commitment to you

Making an impact is more than just what we do: its why were here. So we work hard to create an environment where you can experience a purpose you believe in, the freedom to be you, and the capacity to go further than ever before.

We want you. The true you. Your own strengths, perspective and personality. So were nurturing a culture where everyone belongs, feels supported and heard, and is empowered to make a valuable, personal contribution. You can be sure well take your wellbeing seriously, too. Because its only when youre comfortable and at your best that you can make the kind of impact you, and we, live for.

Your expertise is our capability, so well make sure it never stops growing. Whether its from the complex work you do, or the people you collaborate with, youll learn every day. Through world-class development, youll gain invaluable technical and personal skills. Whatever your level, youll learn how to lead.

Connect to your next step

A career at Deloitte is an opportunity to develop in any direction you choose. Join us and youll experience a purpose you can believe in and an impact you can see. Youll be free to bring your true self to work every day. And youll never stop growing, whatever your level.

Discover more reasons to connect with us, our people and purpose-driven culture at deloitte.co.uk/careers

WPFULL SLTTECH BACYBER LOCOFFICE

Apply
Share this job:
Share
  • Share Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector) with LinkedIn
  • Share Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector) with Facebook
  • Share Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector) with Twitter
  • Share Senior Manager, Security Architect, Cyber, Defence & Security (Government and Public Sector) with a friend via e-mail
tpt.queue.add( function () { "use strict"; (function ($) { $.get( "https://apply.deloitte.co.uk/UKCareers/RelatedJobs", function (data) { var data = $.trim(data); if(data){ $('#relatedJobs').append(data).removeClass('awaiting-content'); } else { $('#relatedJobs').addClass('visibility--hidden'); } tpt.queue.next(); } ); }($ || avajQuery)); } );

Similar jobs

  • AI Data Analytics Manager, IT Business Services
  • AI Delivery Lead, Associate Director - Insurance, Engineering AI & Data, AI&D
  • AI Solution Designer (AI Factory), Senior Manager Financial Services, AI Scaling and Transformation, Technology & Transformation
  • AI Test and Ethics Manager, IT Business Services
  • Analyst - Consultant level, Cloud Engineer (Azure / GCP / AWS), Cloud Engineering
View all
Back to job list

2026. See Terms & conditions for more information.

Deloitte LLP is the United Kingdom affiliate of Deloitte NSE LLP, a member firm of Deloitte Touche Tohmatsu Limited, a UK private company limited by guarantee (DTTL). DTTL and each of its member firms are legally separate and independent entities. DTTL and Deloitte NSE LLP do not provide services to clients. Please see About Deloitte to learn more about our global network of member firms.

Deloitte LLP is a limited liability partnership registered in England and Wales with registered number OC303675 and its registered office at 1 New Street Square, London EC4A 3HQ, United Kingdom.

Customise Cookies

SIMILAR OPPORTUNITIES

No similar opportunities available at the moment.