Senior Security Engineer

The Role As a Senior Security Engineer, you’ll play a pivotal role in strengthening and maintaining our technical security setup to protect Next’s systems and customers against emerging threats. Working as part of our dedicated Security Engineering Team, you’ll design, implement, and fine-tune critical security controls while mentoring junior colleagues and taking a leading hand during incident responses and key security projects. You will collaborate closely with wider IT, Vulnerability & Threat Management, and Incident Response teams to ensure our security controls integrate seamlessly across the business. We will support your professional development from day one, helping you expand your technical expertise while working flexibly on an office-based hybrid contract with a 24x7 shift and call-out rota.

What You'll Take On

• Design, deploy, and maintain core technical security controls—including EDR, SIEM, SOAR, PAM, and WAFs—ensuring they remain effective against new and emerging threats.
• Lead key security delivery projects from scoping to completion, clearly communicating progress and collaborating with stakeholders across IT.
• Establish automated workflows to enrich alert data, streamline incident management, and improve operational efficiency.
• Support the Incident Response team during major security incidents, providing clear technical direction and rapid root-cause analysis.
• Maintain accurate control baselines, performance metrics, and operational documentation to inform future budgeting and licensing decisions.
• Mentor and guide junior team members, helping build technical capability and supporting their ongoing development plans.

What You'll Bring

• Proven, hands-on experience configuring and administering enterprise security tools in a complex IT environment, ideally within retail or eCommerce.
• In-depth knowledge of core Information Security domains, attack techniques, and practical application of frameworks such as MITRE ATT&CK.
• Proficiency with scripting languages like PowerShell or Python to automate routine tasks and streamline workflows.
• Strong familiarity with operating system environments (Windows Server or Linux), networking principles, or application security.
• Clear communication skills, with the ability to translate complex technical concepts into concise advice and business cases for senior stakeholders.
• A calm, structured approach under pressure, excellent attention to detail, and a commitment to high change-management standards.
• A collaborative mindset, a passion for sharing knowledge, and relevant industry certifications (or working towards them).

About Us You know Next, but did you know we’re a FTSE-100 retail company employing over 44,000 people across the Next group. We’re the UK’s 2nd largest fashion retailer and for Kidswear we’re the market leader. At the last count we have over 450 stores, plus the Next Online and it’s now possible to buy on-line from over 80 countries around the world! So we’ve gone global!

About The Team

• 25% off most NEXT, MADE*, Lipsy*, Gap* and Victoria's Secret* products (*when purchased through NEXT)
• Company performance based bonus
• Sharesave scheme
• On-site Nursery available; OFSTED outstanding in all areas
• 10% off most partner brands & up to 15% off Branded Beauty
• Early VIP access to sale stock
• Access to fantastic discounts at our Staff Shops
• Restaurants with great food at amazing prices
• Access a digital GP and other free health and wellbeing services
• Free on-site parking
• Financial Wellbeing - Save, track and enhance your financial wellbeing
• Apprenticeship - Grow and develop on the job whilst gaining a qualification
• Direct to Work - Discount online and instore, collect your items the next day for free from your place of work or local store
• Support Networks - Access to Network Groups to empower and celebrate each other
• Wellhub - Discounted flexible monthly gym memberships, with apps, PT sessions and more

Conditions apply to all benefits. These benefits are discretionary and subject to change.

We aim to support all candidates during the application process and are happy to provide workplace adjustments when necessary. Should you need support with your application due to a disability or long-term condition, feel free to get in touch with us by email headoffice_[email protected] (please include 'Workplace Adjustments' in the subject line), or call us on 0116 284 2486 and leave a voicemail.