SecOps Engineer - M365 Security

SecOps Engineer – M365 Security

Full-Time / Permanent Role.

Hybrid – Central London (4 days in office).

Salary – £70,000-£75,000

Areti are recruiting for a SecOps Engineer for a well-established infrastructure and engineering services organisation delivering complex projects across utilities, energy, and critical national infrastructure.

You’ll have a strong background in Microsoft 365 Security to help protect and strengthen critical systems, corporate IT infrastructure, and cloud environments.

In this role, you will bring expertise across application, network, and infrastructure security, ensuring the effective implementation of technical security controls. You will play a key part in mitigating risk and contributing to the ongoing improvement of the organisation’s overall security posture.

How your day will look:

Cloud Security (M365 Focus):

• Identify and remediate gaps or misconfigurations across cloud-based security controls.
• Manage and optimise email and collaboration security tooling, including anti-phishing, link protection and attachment scanning capabilities.
• Enhance access control policies, including multi-factor authentication, device compliance and location-based rules.
• Assess risks associated with legacy authentication and service accounts, implementing improvements where required.
• Support device compliance initiatives and contribute to readiness for external security audits.

Security Operations (SecOps):

• Monitor security tooling and respond to alerts escalated through third-party or internal monitoring functions.
• Perform triage, analysis and prioritisation of security incidents, ensuring timely and effective response.
• Investigate incidents to determine root cause and recommend appropriate remediation actions.
• Collaborate with infrastructure and IT teams to strengthen system security, implement controls and improve overall posture.
• Support the implementation and maintenance of security frameworks and standards aligned to industry best practice.
• Develop and maintain documentation for operational processes and incident response procedures.
• Contribute to internal knowledge bases to support consistency and efficiency within the function.
• Identify opportunities to automate security tasks and workflows using scripting or similar tools.
• Produce regular reporting on security activity, including incident trends, performance metrics and compliance status.

Experience wanted:

• Proven experience operating within a Security Operations or Incident Response environment.
• Strong knowledge of securing and hardening Windows-based environments.
• Experience using scripting (e.g. PowerShell) to support automation and security-related tasks.
• Good understanding of cloud security principles across major platforms, including Microsoft and other leading providers.
• Exposure to enterprise-scale IT environments and infrastructure.
• Relevant industry certifications in information security or cloud security (or equivalent practical expertise).
• Degree-level education in IT, Cybersecurity or a related discipline, or equivalent hands-on experience.

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