Microsoft 365 Security Engineer in London

Microsoft 365 Security Engineer in London

London Temporary 43200 - 72000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Lead and optimise Microsoft 365 security technologies to enhance cyber defence.
  • Company: Join a key client in the tech industry focused on cybersecurity.
  • Benefits: Competitive daily rate, hybrid work model, and hands-on experience.
  • Why this job: Make a real impact in strengthening cyber security for a major enterprise.
  • Qualifications: Experience with Microsoft Security Stack and incident response skills required.
  • Other info: Dynamic role with opportunities for professional growth and collaboration.

The predicted salary is between 43200 - 72000 £ per year.

i‑confidential is supporting a key client in the search for an experienced Security Operations Engineer (Microsoft 365) to strengthen their cyber defence capability and accelerate the adoption of Microsoft security technologies across their enterprise environment. This role blends technical leadership with hands‑on engineering, working at the heart of the client’s Cyber Operations function to uplift detection, response, and overall M365 security maturity.

Key Responsibilities

  • Lead the configuration, optimisation and ongoing management of the Microsoft Security Stack, including Defender for Endpoint, Identity, Cloud and Office 365.
  • Maintain, tune and operationalise Defender policies and alerts to ensure high‑quality detection and response.
  • Provide flexible support across incident response, detection engineering and log enrichment workstreams.
  • Ensure Microsoft security telemetry is fully integrated into the central SIEM.
  • Support operational excellence through proactive policy management and threat analysis.
  • Collaborate with Cyber Security, Infrastructure and IT teams across multiple regions.
  • Present technical recommendations and security improvements to senior stakeholders.

Expected Deliverables

  • M365 E5 security assessment, baseline and improvement roadmap.
  • Alignment of M365 detections and configurations to MITRE ATT&CK.
  • Integration of M365 detections into SOAR with defined automation and enrichment.
  • Ongoing incident handling support (live or simulated).
  • Completion of E5 security configuration optimisation.
  • Engineering enhancements to support improved visibility, enrichment and integration.

Microsoft 365 Security Engineer in London employer: i-confidential Limited

At i-confidential, we pride ourselves on being an exceptional employer that fosters a collaborative and innovative work culture. Our London-based team enjoys the flexibility of a hybrid working model, competitive daily rates, and ample opportunities for professional growth in the rapidly evolving field of cybersecurity. Join us to make a meaningful impact while advancing your career in a supportive environment that values your expertise and contributions.
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Contact Detail:

i-confidential Limited Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Microsoft 365 Security Engineer in London

✨Tip Number 1

Network like a pro! Reach out to your connections in the cybersecurity field, especially those who work with Microsoft 365. A friendly chat can lead to insider info about job openings or even referrals that could give you an edge.

✨Tip Number 2

Show off your skills! If you’ve got experience with Defender for Endpoint or other Microsoft security tools, consider creating a portfolio or a project that highlights your expertise. This can be a great conversation starter during interviews.

✨Tip Number 3

Prepare for the technical interview! Brush up on your knowledge of M365 security configurations and MITRE ATT&CK framework. We recommend practising common interview questions and scenarios related to incident response and detection engineering.

✨Tip Number 4

Don’t forget to apply through our website! We’ve got loads of opportunities that might just be perfect for you. Plus, applying directly can sometimes get your application noticed faster!

We think you need these skills to ace Microsoft 365 Security Engineer in London

Microsoft Security Stack
Defender for Endpoint
Defender for Identity
Defender for Cloud
Office 365 Security
Incident Response
Detection Engineering
Log Enrichment
SIEM Integration
Policy Management
Threat Analysis
Collaboration Skills
Technical Presentation Skills
M365 E5 Security Assessment
MITRE ATT&CK Framework

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Microsoft 365 Security Engineer role. Highlight your experience with Microsoft security technologies and any relevant projects you've worked on. We want to see how your skills align with what we're looking for!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about cyber security and how you can contribute to our team. Be sure to mention specific experiences that relate to the job description.

Showcase Your Technical Skills: In your application, don't forget to showcase your technical skills, especially around the Microsoft Security Stack. We love seeing candidates who can demonstrate their hands-on experience with tools like Defender for Endpoint and SIEM integration.

Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of your application and ensures you get all the updates directly from us. Plus, it shows you're keen on joining our team!

How to prepare for a job interview at i-confidential Limited

✨Know Your Microsoft Security Stack

Make sure you’re well-versed in the Microsoft Security Stack, especially Defender for Endpoint, Identity, Cloud, and Office 365. Brush up on how to configure, optimise, and manage these tools, as you'll likely be asked about your hands-on experience with them.

✨Demonstrate Incident Response Skills

Prepare to discuss your approach to incident response and detection engineering. Have examples ready that showcase your ability to handle incidents, tune alerts, and operationalise policies effectively. This will show your practical knowledge and readiness for the role.

✨Familiarise Yourself with MITRE ATT&CK

Understanding the MITRE ATT&CK framework is crucial for this role. Be prepared to explain how you would align M365 detections and configurations to this framework, as it demonstrates your strategic thinking and technical expertise.

✨Engage with Stakeholders

Since presenting technical recommendations to senior stakeholders is part of the job, practice articulating complex security concepts in a clear and concise manner. Think about how you can convey your ideas effectively, making them relatable to non-technical audiences.

Microsoft 365 Security Engineer in London
i-confidential Limited
Location: London

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