Senior Security Engineer Jobs

Senior Security Engineer

PEXA UK

Location:
United Kingdom, Leeds ▼
Thame

Category:
IT - Administration

Contract Type:
Not provided

Salary:

65000.00 - 75000.00 GBP / Year

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Job Description:

The Senior Security Engineer will provide hands-on technical leadership within the UK, ensuring that cyber security strategy and architecture defined by AU are implemented effectively across UK subsidiaries, aligned with local jurisdictional compliance requirements. This role bridges between AU Security, outsourced partners, and UK subsidiaries (Optima, Smoove, Legal Eye, Amity Law), ensuring successful delivery of projects, uplift initiatives, and BAU operational excellence. This position will own UK technical approvals, impact assessments, and project-specific security delivery, acting as the local escalation point for incidents and implementations.

Job Responsibility:

Maintenance and Operational Security: Ensure all security solutions remain operationally effective
Ensure technical teams timely patch applications, systems, software, and hardware
Maintain and audit secure configurations for devices, applications, and cloud environments
Access Control and Identity Management: Conduct regular user and privileged account reviews
Manage and monitor Privileged Identity Management (PIM) profiles and elevated access accounts
Coordinate with IT and HR for onboarding/offboarding
Tool, Infrastructure, and Encryption Management: Maintain and optimise security infrastructure and tools
Oversee encryption key and certificate management
Work with vendors and internal teams to ensure tools remain current
VPN, Network & Firewall Security: Design, configure, and maintain secure VPN and Zero-Trust network solutions
Manage access controls, MFA policies, and authentication mechanisms
Administer and maintain network firewalls
Collaborate with the SOC to investigate network-related incidents
Document network topology, firewall rules, and VPN configurations
Endpoint Security: Deploy, manage, and monitor Endpoint Detection & Response (EDR) and associated endpoint controls
Maintain secure endpoint baselines
Integrate endpoint compliance and posture assessments with MDM platforms
Work with the SOC on endpoint incident investigations
DevSecOps & Application Security: Provide hands-on security guidance to development teams
Embed security into CI/CD pipelines
Contribute to secure cloud architecture and application design
Support application security testing, sign-offs, and remediation of vulnerabilities
Monitoring, Threat Management & Incident Response: Collaborate with the SOC team to monitor, investigate, and triage security alerts and incidents
Conduct log and event analysis
Participate in incident response, root cause analysis, and post-incident reviews
Governance, Compliance & Continuous Improvement: Maintain accurate documentation
Support compliance efforts against frameworks such as ISO 27001, SOC 2, CIS benchmarks, and Cyber Essentials Plus
Participate in change management, risk assessments, and architecture reviews
Identify process optimisation opportunities
Awareness & Training: Assist with internal security awareness initiatives
Promote a culture of security accountability
Partner & Vendor Engagement: Serve as the primary UK liaison with third-party security partners
Ensure outsourcing arrangements deliver effective outcomes
Collaborate with AU procurement and security leadership on vendor performance
Security Advisory & Collaboration: Provide security consultancy and expertise to IT, DevOps, and Infrastructure teams
Contribute to vulnerability management and remediation planning
Evaluate emerging tools, frameworks, and security technologies
Support penetration testing, application reviews, and other proactive security improvement initiatives

Requirements:

Proactive, can-do attitude to get things done quickly and efficiently
Strong collaboration and communication skills
Willingness to contribute ideas to the security programme
Demonstratable first-hand experience in achieving organisational adherence to security best practices
Experience in the practical protection of a remote working laptop estate and SaaS cloud solutions
Experience in identity and access management solutions
Experience in device business automation and updates
Experience in the security aspects of cloud web application hosting and defence measures like WAF

Nice to have:

Technology product specific desirable skills: Palo Alto Cortex ERD
Palo Alto Global Protect VPN
Palo Alto Prisma Cloud Firewall
Nucleus vulnerability management
Airlocker application whitelisting
Trend Micro and Abnormal email security
OKTA / Entra IDAM

What we offer:

Your growth: We encourage you to hit your personal and professional learning and development goals with our tailored programs and tools
Your wellness: We care about your holistic wellbeing
Your work/life blend: We want to help you create your ideal work/life blend

Additional Information:

Job Posted:
December 11, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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