Remote: Microsoft 365 Security & Compliance Specialist

Great British Energy Group; Cardiff; Remote; GBP 111,000 - 138,000; Full time

Job summary

Companies House is seeking a Microsoft 365 Security & Compliance Specialist to design, implement and administer security controls across the organisation’s Microsoft 365 environment. You will lead the deployment of Purview, Defender and Entra ID, develop data protection policies, and support investigations and audits under SC clearance requirements.

This is a 6‑month remote contract inside IR35 with a UK focus on regulatory compliance.

Qualifications

• Strong experience administering and implementing Microsoft 365 Security and Compliance solutions.
• Hands-on experience with Purview, Defender and Entra ID.
• Expertise in information protection, DLP, data classification, and retention policies.
• Experience supporting security investigations, incident response and compliance activities.
• Knowledge of security governance, risk management and regulatory compliance requirements.
• Experience creating technical documentation, standards and procedures.
• Strong stakeholder engagement and communication skills.
• Ability to translate technical security concepts into practical business recommendations.

Responsibilities

• Design, implement, and administer Microsoft 365 security and compliance solutions.
• Lead the deployment and optimisation of Purview, Defender, and Entra security capabilities.
• Develop and maintain policies relating to information protection, data governance, retention, DLP and secure collaboration.
• Support security investigations, evidence gathering, and remediation recommendations.
• Assess existing security controls and strengthen Microsoft 365 security posture, resilience and compliance.
• Provide specialist advice and risk-based recommendations to technical teams and business leaders.
• Produce technical documentation, standards, procedures, and implementation guidance.
• Support audits against ISO27001, GDPR, Cyber Essentials, GovS 007, and GovS 013.

Skills

M365 Security

DLP & Data classification

Policy development

Incident response

Governance & risk

Documentation

Stakeholder engagement

Security compliance

Tools

Microsoft Purview

Microsoft Defender

Microsoft Entra ID

Job description

Companies House is seeking a Microsoft 365 Security & Compliance Specialist to design, implement and administer security controls across the organisation’s Microsoft 365 environment. You will lead the deployment of Purview, Defender and Entra ID, develop data protection policies, and support investigations and audits under SC clearance requirements.

This is a 6‑month remote contract inside IR35 with a UK focus on regulatory compliance.