Infrastructure & Security Engineer - London

Mobilus Limited; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Hybrid work model

Salary with bonus and benefits

Job summary

Mobilus Limited in London is seeking an Infrastructure and Security Engineer to shape and execute our cyber security roadmap. The role covers infrastructure, security operations, identity and email security, and automation across the environment.

The successful candidate will mentor junior engineers, collaborate with specialists, ensure PCI-DSS readiness, and maintain incident response and disaster recovery plans, all within a hybrid London-based setting.

Qualifications

• Experience in infrastructure and network connectivity.
• Microsoft environment experience including Microsoft 365, Entra ID and SharePoint.
• Understanding of IT compliance and audit processes such as PCI-DSS.
• Hands-on cyber security experience.
• Eligibility to live and work in the UK.
• Ability to work in London three days per week.

Responsibilities

• Work across infrastructure and endpoints, security operations, identity and email security, and automation and patch management.
• Mentor first-line engineers as part of the role.
• Engage with security specialists to evaluate and introduce new platforms.
• Mature CIS Framework alignment and drive the cyber security roadmap.
• Design playbooks and tune detections with Arctic Wolf Concierge Team.
• Help keep the PCI-DSS audit cycle running smoothly.
• Test and keep incident response and disaster recovery plans current.

Skills

Infrastructure experience

Network connectivity

Cyber security

Mentoring

PCI-DSS awareness

Tools

Microsoft 365

Entra ID

SharePoint

Intune

Meraki

Arctic Wolf SOC

Abnormal Security

Job description

Salary: £60,000 - 80,000 per year

Requirements:

• We are looking for strong experience in infrastructure and network connectivity.
• We need experience in a Microsoft environment, including Microsoft 365, Entra ID, and SharePoint.
• We need understanding of IT compliance and audit processes such as PCI-DSS or similar.
• We want some hands-on cyber security experience.
• We require eligibility to live and work in the UK.
• We require the ability to work in London three days per week.

Responsibilities:

• We will have you work across infrastructure and endpoints, security operations, identity and email security, and automation and patch management.
• We will ask you to mentor first-line engineers as part of the role.
• We will have you engage with security specialists to evaluate and introduce new platforms.
• We will expect you to mature CIS Framework alignment and help drive our cyber security roadmap.
• We will have you design playbooks and tune detections with Arctic Wolfs Concierge Team.
• We will ask you to help keep the PCI-DSS audit cycle running smoothly.
• We will have you test and keep our incident response and disaster recovery plans current.

Technologies:

• Microsoft 365
• Network
• Security
• SharePoint
• Office 365

More:

We are a leading UK retail business, home to well-known high-street brands and employing over 6,000 people across more than 275 locations. Our technology team is lean and high-trust, supporting a modern infrastructure environment that includes Microsoft 365, Intune, Meraki, Arctic Wolf SOC, and Abnormal Security. This is a broad Infrastructure and Security Engineer role with significant autonomy and ownership over our cyber security roadmap. It is based in London on a hybrid model, with three days per week in the office, and offers a salary of 45k to 55k plus bonus and benefits.

last updated 36 week of 2026