Security Engineer

Brunswick Group; City Of London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Brunswick Group is seeking a Security Engineer to join the Information Security team in the UK. You will provide technical security expertise across AI-related requests, third-party AI tools, and internal AI-enabled applications, shaping security reviews, architecture input, and risk-based guidance throughout the lifecycle.

Working with the AI team, ICT, and stakeholders, you will implement guardrails, threat modelling, and secure design patterns to protect new technologies across the firm.

Qualifications

• 5-7 years' experience in cyber security, information security or security engineering.
• Proven experience providing security guidance across technology projects, AI initiatives, cloud-based solutions, or internally developed applications.
• Strong understanding of security architecture and secure design principles, including identity and access management, data protection, logging, monitoring, encryption.
• Familiarity with AI-related technologies, enterprise AI platforms, large language models, agentic AI, and associated security risks.
• Experience conducting STRIDE-based threat modelling, technical risk assessments, or security design reviews.
• Practical understanding of cloud/enterprise environments, particularly Microsoft 365, Azure, SaaS platforms.
• Ability to translate technical security risks into clear business-oriented recommendations.
• Security risk considerations for third-party AI tools, AI apps, integrations, automation, and agent-based use cases.
• ISO27001-aligned or regulated environment experience would be beneficial.

Responsibilities

• Review and assess third-party AI tools, enterprise AI platforms, and AI-enabled features.
• Provide security architecture guidance for AI-related applications and solutions.
• Support the implementation of security guardrails, governance processes, and secure design patterns for AI adoption.
• Conduct STRIDE-based threat modelling for AI-enabled workflows and integrations.
• Assess risks such as data exposure, prompt injection, model misuse, third-party dependency risk, and insecure integrations.
• Advise on secure design principles including IAM, data protection, logging, monitoring, encryption, resilience.
• Define and document security requirements, design decisions, and remediation actions.
• Monitor emerging AI security risks and industry best practices.

Skills

Security engineering

Threat modelling STRIDE

Cloud / Azure / M365

Communication skills

Risk assessment

Stakeholder engagement

Tools

Azure

Microsoft 365

Job description

Opportunity

The Security Engineer will join Brunswick's Information Security team and play a key role in supporting the firm's secure adoption of AI and emerging technologies.

This role will act as a dedicated security professional supporting requests and initiatives originating from the firm's AI team, providing security review, architecture input, and risk-based guidance across third-party AI tools, enterprise platforms, AI-enabled applications, and internally developed solutions.

Working closely with the AI team, ICT, application owners, and business stakeholders, the Security Engineer will help ensure new technologies are protected through appropriate security controls and guardrails throughout the development and delivery lifecycle.

About the Role

In this role, you will provide technical security expertise across AI-related requests, third-party AI tools, internally developed applications, workflows, enterprise features, and emerging agent-based use cases.

Key responsibilities include:

• Review and assess third-party AI tools, enterprise AI platforms, and new AI-enabled features, including solutions such as ChatGPT, Claude, Microsoft Copilot, and other emerging technologies.
• Review and assess requests relating to AI-enabled solutions, enterprise AI platforms, new features, integrations, and internally developed applications.
• Provide security architecture guidance for applications and solutions developed or introduced by the AI team.
• Support the implementation of security guardrails, governance processes, and secure design patterns for AI adoption across the firm.
• Conduct STRIDE-based threat modelling for new internally developed solutions, AI-enabled workflows, integrations, and automation use cases.
• Assess risks associated with AI use cases, including data exposure, prompt injection, model misuse, third-party dependency risk, inappropriate access to sensitive information, and insecure integrations.
• Advise on secure design principles, including identity and access management, data protection, logging, monitoring, encryption, resilience, and secure configuration.
• Define and document security requirements, architecture decisions, design recommendations, and risk-based remediation actions.
• Monitor emerging AI security risks, attacker techniques, and industry best practices, ensuring relevant mitigations are considered within Brunswick's environment.

What We're Looking For

We're looking for an experienced, technically capable security professional who can combine strong security engineering expertise with practical judgement and clear communication.

The ideal candidate will demonstrate:

• 5-7 years' experience in cyber security, information security, security engineering, or a related technical security role.
• Proven experience providing security guidance across technology projects, enterprise platforms, AI-related initiatives, third-party tools, cloud-based solutions, or internally developed applications.
• Strong understanding of security architecture and secure design principles, including identity and access management, data protection, logging, monitoring, encryption, network security, and resilience.
• Familiarity with AI-related technologies, enterprise AI platforms, large language models, agentic AI, and the security risks associated with AI adoption.
• Experience conducting STRIDE-based threat modelling, technical risk assessments, or security design reviews.
• Practical understanding of cloud and enterprise environments, particularly Microsoft 365, Azure, SaaS platforms, and modern workplace technologies.
• Ability to translate technical security risks into clear, business-focused recommendations.
• Strong written and verbal communication skills, with confidence engaging technical and non-technical stakeholders.
• Understanding of security risks associated with third-party AI tools, internally developed AI applications, integrations, automation, and agent-based use cases.
• Sound judgement, attention to detail, and the ability to balance security requirements with business needs.
• Experience working in an ISO27001-aligned or regulated environment would be beneficial.
• Preferred, but not essential, certifications:
  • ISC2: CISSP, CCSP, SSCP
  • ISACA: CISM, CISA, CRISC
  • CompTIA: Security+, CySA+, CASP+

Why Join Us

Whether you are joining a client facing team, a core services team, or starting out on your professional career journey, joining Brunswick unlocks a range of employee benefits to support your financial future, health and wellness, family and community and continuous professional development.

About Brunswick

Brunswick is a global advisory firm. We help companies tackle high-stakes issues, navigate complex stakeholder relationships, and deliver high-impact outcomes.

Our clients value our ability to anticipate, shape, and respond to the key players and forces in the financial and investment arena, regulatory and geopolitical universe, NGO community, workforce and beyond. They rely on us for deep experience, fresh perspectives and original thinking. So, in Brunswick you will find an exceptional range of experience and talent with a rich mix of backgrounds. From the beginning, we have prioritized attracting, developing, and retaining the best professionals in the industry, united by a culture of inclusivity, excellence, and intellectual curiosity.

Founded in 1987 in London, the firm has organically grown to 27 offices in 18 countries across the Americas, Europe, Middle East, Africa, Asia and Australia. We operate as a "one-firm firm" with no individual profit centers. This allows us to assemble fully integrated, bespoke teams for each client, able to draw on the full resources of Brunswick anywhere in the world.

Brunswick is an equal opportunity employer. All qualified applicants will be considered without regard to race, religion, color, national origin, gender, sexual orientation, age, disability, pregnancy, genetic information, or any other status protected by applicable law. Please read our Global Privacy Notice to understand how your data is managed.