Platform and Cyber Security Specialist - Hybrid

Ashdown Group; Hounslow; Hybrid; GBP 55,000 - 65,000; Full time

Benefits offered by this job

Hybrid work arrangement

Pension plan

Salary range disclosed

Job summary

A Platform & Cyber Security Specialist role at Ashdown Group involves protecting a cloud-first environment within a hybrid work model. You will own security controls, manage Microsoft Entra ID, Defender tools, and core networking while ensuring secure, resilient digital services.

Responsibilities include monitoring alerts, investigating incidents, configuring SSL VPNs, and leading audits and policy work across Office 365 and endpoints.

Qualifications

• Strong understanding of cyber security principles, identity and access management and MS security best practices.
• Experienced with Hybrid Exchange environments, including Exchange Online and on-premises services.
• Skilled in managing Microsoft Entra ID environments, including Conditional Access, MFA, SSPR, PIM, and identity lifecycle management.
• Experience of Microsoft 365 Defender and Sentinel to monitor, investigate, and respond to security threats and incidents.
• Strong knowledge of Active Directory management, including Group Policy, DNS, DHCP, domains, trusts, replication, and certificate services.
• Familiar with Microsoft Intune and endpoint management including device security and compliance policies.
• Knowledge of VPN technologies, SSL certificates, and core networking concepts
• Proficient in PowerShell scripting and automation.

Responsibilities

• Take ownership of platforms, cyber security controls and emerging technologies that underpin the organisation's digital environment.
• Configure and manage security across Office 365 and endpoints, including Defender RBAC and Defender for Cloud Apps.
• Investigate alerts and incidents, monitor and remediate risks, generate audits and reports.
• Safeguard the organisation from spam and phishing through Microsoft 365 email remediation, eDiscovery, and retention policy configuration.
• Maintain SSL certificates and the wider VPN estate; manage DNS, DHCP and name resolution to configure SSL VPN profiles.

Skills

Cyber security principles

Identity & Access management

MS security best practices

Hybrid Exchange environments

Microsoft Entra ID

Conditional Access

MFA

SSPR

PIM

Audits & reporting

DNS & DHCP

Certificate services

Intune & endpoint management

VPN technologies

PowerShell scripting

Tools

Microsoft Entra

Office 365

Defender for Cloud Apps

Defender

Sentinel

Intune

Job description

We are seeking a Platform & Cyber Security Specialist to work within a large organisation as they move through an IT transformation programme. This is a key role where you will help deliver and secure the organisation's cloud-first technology environment, ensuring their digital services remain modern, resilient and secure. This is a hybrid role based 3 days a week at their offices in North West London and 2 days working from home.

The Platform and Cyber Security Specialist will take ownership of the platforms, cyber security controls and emerging technologies that underpin the organisation's digital environment. This includes managing the Microsoft Entra environment end to end - from Entra Connect, ID objects, and licensing through to security controls such as PIM, Conditional Access, MFA, and SSPR.

You'll also configure and manage security across Office 365 and endpoints, including Defender RBAC and Defender for Cloud Apps, staying ahead of emerging threats by investigating alerts and incidents, monitoring and remediating risks and generating audits and reports, alongside safeguarding the organisation from spam and phishing through Microsoft 365 email remediation, eDiscovery, and retention policy configuration. Additionally, you'll be responsible for SSL certificates and the wider VPN estate, applying a strong understanding of DNS, DHCP, and name resolution to configure SSL VPN profiles and maintain a robust security posture.

Key skills

• Strong understanding of cyber security principles, identity and access management and MS security best practices.
• Experienced with Hybrid Exchange environments, including Exchange Online and on-premises services.
• Skilled in managing Microsoft Entra ID environments, including Conditional Access, MFA, SSPR, PIM, and identity lifecycle management.
• Experience of Microsoft 365 Defender and Sentinel to monitor, investigate, and respond to security threats and incidents.
• Strong knowledge of Active Directory management, including Group Policy, DNS, DHCP, domains, trusts, replication, and certificate services.
• Familiar with Microsoft Intune and endpoint management including device security and compliance policies.
• Knowledge of VPN technologies, SSL certificates, and core networking concepts
• Proficient in PowerShell scripting and automation

This is a great opportunity to play a leading role in maintaining secure, resilient and highly available technology services that support the delivery of critical services. The role is hybrid based and offered with a salary range of between £55,000-£65,000 depending on experience plus a very generous pension and other benefits.