Job DescriptionDue to growth within our security engineering department we are now looking for a Principal Information Security Engineer to join the team. The role will support the Senior Information Security Engineering Manager by providing technical leadership and oversight across the Information Security Engineering team.
This role is responsible for the day‑to‑day technical execution by our security engineering team, ensuring that project engagements are delivered to a high standard and support activities are dealt with in line with organisational SLAs.
You will act as the team’s primary technical lead and escalation point, driving efficiency, validating designs, and ensuring that all engineering outputs remain consistent and aligned with the security strategy.
The Key Responsibilities Of The Role
Act as the primary technical escalation point for the team, providing hands‑on guidance and decision‑making for complex technical challenges.
Oversee the day‑to‑day execution of security engineering, ensuring that BAU work is delivered to high standards and that all team SLAs are consistently met.
Ensure the quality and consistency of engineering outputs, specifically for project engagements, technical tasks, and documentation, ensuring they align with established security standards.
Support the technical delivery of our security tooling roadmap, helping to bridge the gap between high‑level strategic objectives and operational outcomes.
Work closely with the Information Security Architecture team to validate design concepts, ensuring solutions are robust, scalable, and fit for our enterprise environment.
Collaborate with the Information Security Operations team to drive operational efficiency, quality improvements, and the seamless integration of security controls across the estate.
Provide technical leadership and mentoring to the engineering team, ensuring they have the support and direction needed to deliver secure, automated, and effective solutions.
Technical Skills
Demonstrable experience implementing enterprise security platforms
Strong hands‑on experience with Microsoft security stack
Strong hands‑on experience using, managing, and securing diverse end‑user compute environments, including Windows, macOS, Linux, and mobile device platforms.
Knowledge/experience working with firewalls and cloud security solutions is highly advantageous
Deep understanding of Information Security solutions e.g. email / web gateways, Privileged Account Management (PAM), Identity Governance and Administration (IGA), Security Information and Event Management (SIEM), Endpoint protection
Strong understanding and knowledge of Information Security risk management tools and techniques.
Awareness of Information Security control standards and frameworks.
Hands‑on experience with automation and scripting highly desirable.
Competence, Knowledge And SkillsCompetence
Experience working within recognised Information Security frameworks and best practices such as ISO27001, NIST etc.
5 years’ experience in an Information Security role gained in a financial services or e‑commerce environment is preferred.
Knowledge & Skills
Significant experience in the area of Information Technology (IT) security
Strong knowledge of core IT and networking concepts
Well versed in IT security capabilities, framework and concepts
Extensive experience implementing industry‑standard IT security platforms
Strong ownership of tasks, attention to detail and following through to conclusion
Ability to challenge approach, strategy and implementation to ensure Information Security is consistently considered and improved
Ability to work under own initiative to plan and communicate effectively with colleagues and customers
Structured, self‑starting, flexible and enjoy working in fast‑paced environments
Effective communication skills, both written and verbal
Ability to plan, organise and follow through on assigned tasks and complete with little or no prompting from management
Excellent attention to detail
Attained or working towards CISSP certification.
About AJ BellAt 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.
What We Offer
Competitive starting salary
26 days holiday, increasing with service + buy/sell scheme + bank holidays
7% Pension with matched contributions
Discretionary bonus scheme
Share schemes (including free shares and BAYE)
Health Cash Plan and discounted private healthcare
Free gym
Enhanced family leave (subject to qualifying criteria)
Travel and bike loan schemes
Employee Assistance Programme
Life at AJ Bell
Regular social events including summer and Christmas parties
Learning and development opportunities tailored to you
Casual dress code
Friendly, supportive team environment
Our ways of workingAt AJ Bell, our people are the heart of our culture. We believe in building strong connections by working together. That’s why we offer a hybrid working model, where you’ll spend a minimum of 50% of working time per month in the office. For new team members, an initial period will be spent full‑time in the office to help you immerse yourself in our business and build valuable relationships with your colleagues.
Inclusion & diversityWe’re committed to creating an inclusive environment where everyone feels respected, supported and able to be themselves at work. We welcome applications from all backgrounds and make hiring decisions based on skills, experience and potential.
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