Senior Information Security Analyst

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AJ Bell is hiring a Senior Information Security Analyst to support the CISO in strengthening security across Technology Services in a hybrid role in London. This hands-on position focuses on detecting and responding to threats, monitoring alerts, threat hunting, incident response and vulnerability management with SIEM, endpoint protection and email/web security tools. You’ll drive continuous improvement, report security metrics and work with Windows, Linux, Active Directory and cloud security controls. The role offers a competitive salary, holiday, pension, bonus and share schemes, plus health benefits, with a hybrid model. To apply, tailor your CV to incident response and threat hunting, highlight frameworks such as ISO27001/NIST and certifications like CISSP, and apply directly via our in-house recruitment team.

Job Description

We’re recruiting a Senior Information Security Analyst to support the Chief Information Security Officer in strengthening and evolving the organisation’s security posture across Technology Services.

This is a hands-on, operational role where you’ll play a key part in protecting our systems and customers by identifying, analysing and responding to security threats. In many ways, you’ll act as a digital detective,  investigating unusual activity, uncovering potential risks, and helping to keep both our customers and organisation safe.

You’ll also help drive continuous improvement across our security operations capability, influencing how we detect, prevent and respond to risk across the organisation.

Key responsibilities

• Act as a first responder for security incidents, including participation in on-call support
• Monitor, triage and respond to security alerts and events, prioritising based on risk and impact
• Analyse security data to identify trends, vulnerabilities and emerging threats
• Support incident response activity, ensuring effective investigation and resolution
• Oversee vulnerability management and support patching activities, validating effectiveness through scanning and review
• Operate and support key security technologies including SIEM, endpoint protection and email/web security tools
• Monitor external threat intelligence sources and assess relevance to the organisation
• Produce and report on security metrics, KPIs and operational performance

Technical expertise

• Strong understanding of information security principles, risk management and the threat landscape
• Experience operating and monitoring security tooling such as SIEM, endpoint protection and email/web security solutions
• Ability to conduct proactive threat hunting and contribute to improving detection capability
• Awareness of cloud security controls and standards
• Experience working with enterprise systems such as Microsoft Active Directory, Windows and Linux
• Understanding of network security technologies such as proxies, DLP and endpoint controls

Skills and experience

• Experience working within recognised information security frameworks (e.g. ISO27001, NIST)
• Proven experience in an information security role, ideally within financial services or a regulated environment
• Strong analytical skills with the ability to interpret data and support decision-making
• Confident taking ownership and driving issues through to resolution
• Comfortable challenging processes to improve security outcomes
• Strong communication skills, both written and verbal
• Well organised with the ability to manage competing priorities
• Commitment to continuous professional development (e.g. CISSP or equivalent)

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.

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 working

At 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 & diversity

We’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.

Agency information

This vacancy is being managed exclusively by our in-house Recruitment team. We are not partnering with recruitment agencies on this opportunity and will only accept applications submitted directly by candidates.