Senior Information Security Engineer

Responsibilities

• Lead the design, delivery and ongoing improvement of enterprise security solutions across endpoint, cloud, network, DevOps and security monitoring environments.
• Design and implement secure infrastructure controls aligned to industry best practice, ensuring scalability, resilience and operational effectiveness.
• Evaluate, select and implement new security tools and platforms, driving automation, integration and measurable value across the estate.
• Lead the adoption of new security technologies, ensuring smooth transition into operational support and long-term sustainability.
• Oversee patch management across systems and hardware, ensuring effective coordination and risk reduction.
• Support server hardening and secure configuration initiatives in collaboration with Infrastructure and Service Delivery teams.
• Provide security oversight across projects and change initiatives, ensuring security is embedded from design through to delivery.
• Support audits, regulatory reviews and due diligence activities, ensuring evidence and controls are robust and well maintained.
• Act as a key technical link between the CISO function and Infrastructure teams, ensuring alignment across security and operational delivery.
• Contribute to continuous improvement of cybersecurity risk management processes, helping to enhance maturity across the organisation.
• About you
• Technical expertise
• Proven experience implementing enterprise security platforms
• Strong knowledge of security risk management tools and techniques
• Deep understanding of security solutions (e.g. SIEM, PAM, IGA, endpoint protection, email/web gateways)
• Experience with firewall technologies (desirable)
• Knowledge of cloud security standards and solutions (desirable)
• Strong understanding of core IT and networking principles
• Awareness of the evolving threat landscape

Requirements

• Experience working within frameworks such as ISO27001, NIST or similar
• Significant experience in IT security
• Financial services or e-commerce experience preferred
• Strong problem-solving skills and attention to detail
• Ability to take ownership and deliver end-to-end solutions
• Effective communicator, able to work across technical and non-technical teams
• CISSP (achieved or in progress) desirable
• About AJ Bell
• At AJ Bell, we believe investing should feel good. Whether you're looking for an ISA, pension or dealing account, whether you want to invest with the help of a financial adviser or do it yourself, we have easy-to-use solutions to suit people from all walks of life.
• We're one of the UK's fastest-growing investment platform businesses, trusted by everyone from professional financial advisers to first-time investors.
• Today, over 723,000 customers trust us to manage more than £108.7 billion of assets. By continually striving to make investing simpler and more accessible, we're helping more people take control of their financial futures.
• We're proud to be recognised as one of the UK's Best 100 Companies to Work For for six consecutive years, and a Great Place to Work® in 2025 and 2026, a reflection of our supportive and collaborative culture.

Benefits

Additional Information

We're recruiting a Senior Information Security Engineer to support the Chief Information Security Officer in managing and reducing information security risks across Technology Services. This is a hands-on, technical engineering role where you'll help design, build and continuously improve the security controls, platforms and infrastructure that protect AJ Bell and our customers. You'll be at the forefront of how we evolve our security capability, making sure our tools, systems and integrations are not only secure, but scalable, automated and effective. In many ways, you'll be a builder of our security foundations, helping ensure we can detect, prevent and respond to threats at pace while enabling the business to move safely and confidently.

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