Senior M365 Security Consultant

CyberOne
London

“I am hugely excited about my future and the future of CyberOne. I have enjoyed my time here immensely and have learnt a huge amount in a short space of time, year-for-year I've learnt more here than I have at Microsoft and PwC.” - CyberOne Consultant

About CyberOne

CyberOne is a pure-play Microsoft security partner dedicated to helping enterprises realise the full value of the Microsoft Security portfolio—across Defender XDR, Sentinel, Entra, Purview, Intune, Copilot for Security and more. We combine deep technical expertise with outcome-driven services that accelerate secure cloud adoption, modernise threat protection and simplify compliance.

Job Title: Senior M365 Security Consultant

Location: Remote ; Occasional travel

Employment Type: Full-time

The Role:

We are looking for an experienced Senior M365 Security Consultant to join our leading Microsoft Security Practice. In this role, you’ll help organisations design, improve, and mature their Cyber Security posture through the use of M365 Security and Compliance technologies.

This is a client-facing, senior-level role where you’ll combine deep hands-on technical expertise with strong consulting skills. You’ll own engagements end-to-end: from discovery and strategy through to design and implementation.

If you enjoy solving complex security challenges, influencing stakeholders, and seeing the tangible impact of your work, this role gives you the space and trust to do exactly that.

What You’ll Be Doing

  • Advise & Assess: Partner with customers to understand their business and security challenges, assess their Microsoft 365 environments, and identify meaningful improvement opportunities.

  • Design & Deliver: Architect and implement security and compliance solutions across Microsoft 365, aligned to Microsoft best practices, Zero Trust, and regulatory requirements.

  • Shape Strategy: Help clients define security strategies, roadmaps, and policies across organisations of varying sizes and maturity.

  • Hands-On: Lead implementations, tenant migrations, and greenfield deployments translating designs into secure, usable solutions.

  • Support Pre-Sales: Collaborate with sales teams on solution design, provide technical input, and contribute to Statements of Work and proposals.

  • Microsoft Partnership: Become the technical face of CyberOne when engaging directly with Microsoft by engaging with their product group and engineering teams.

What You’ll Bring

You’re an experienced M365 security professional who is comfortable working independently, engaging directly with customers, and making informed technical decisions.

Strong experience with Microsoft 365 security and compliance technologies, including:

  • Microsoft Purview

  • Microsoft Defender for Endpoint

  • Microsoft Defender for Office 365

  • Microsoft Defender for Identity

  • Microsoft Defender for Cloud Apps

  • Microsoft Entra ID

  • Microsoft Intune

Plus

  • Experience delivering M365 tenant migrations and greenfield deployments

  • Ability to assess existing environments, identify gaps, and implement effective remediation

  • Confidence explaining technical concepts to both technical and non-technical stakeholders

Preferred Certifications

  • SC-100 – Microsoft Cybersecurity Architect

  • SC-200 – Microsoft Security Operations Analyst

  • SC-300 – Microsoft Identity and Access Administrator

  • SC-400 – Microsoft Information Protection and Compliance Administrator

  • MS-500 – Microsoft 365 Security Administrator Associate

  • MS-102 – Microsoft 365 Administrator

What Sets You Apart

  • You’re comfortable operating as a trusted advisor, not just a technical implementer

  • You can influence stakeholders from engineers through to senior leadership

  • You take a pragmatic, outcome-focused approach to security

  • You enjoy variety and can manage multiple client engagements without losing quality

  • You’re curious, motivated, and keep up with evolving threats and Microsoft capabilities

Why Join Us?

  • Work with experienced cybersecurity professionals on meaningful, high-impact engagements

  • Exposure to a wide range of industries, challenges, and modern Microsoft security solutions

  • A collaborative environment that values expertise, autonomy, and continuous learning

  • Competitive compensation, strong benefits, and a clear path for career progression

If you’re passionate about Microsoft 365 security and want a role where your expertise genuinely makes a difference, we’d love to talk.


Let’s redefine what it means to be secure. Together.

#CyberDefenders

Posted 2026-02-06

Recommended Jobs

Caretaker - West London

Marchant Recruitment
London

A welcoming and community-focused primary school in West London is seeking a reliable and proactive School Caretaker to join their team. This is a part-time position ideal for someone who takes p…

View Details
Posted 2025-11-15

Science Teacher - Independent School - Romford

Marchant Recruitment
Romford, Greater London

Our client, a highly regarded independent 11–18 day and boarding school in Romford, is seeking a dedicated, knowledgeable, and inspiring Science Teacher to join their thriving Science Department, s…

View Details
Posted 2026-03-07

Penetration Tester

Capital One
London

White Collar Factory (95009), United Kingdom, London, London Penetration Tester About the role Capital One Offensive Security reduces cyber risk by uncovering vulnerabilities and weaknesse…

View Details
Posted 2026-02-03

Year 3 Teacher | Havering

Marchant Recruitment
Havering, Greater London

• Year 3 Teacher required to join a supportive team • Full-time Year 3 Teacher position available in Havering • Start date January 2026 A well-established independent school in Havering is seeki…

View Details
Posted 2026-01-10

Dog Sitting needed near Goodmayes IG3

Tailster
Goodmayes, Greater London

Sitting from 8.30-4pm Tuesday and Thursday

View Details
Posted 2025-10-15

Spontaneous Application (Account Executive)

Infraspeak
London

Welcome to Infraspeak. Our mission is simple: to transform facilities management with a collaborative platform that unifies every part of FM operations into one cohesive system — enabling every…

View Details
Posted 2026-02-06

Chief Information Security Officer

Freedx
London

Who We Are  Freedx is a newly established cryptocurrency exchange focused on building a scalable, compliant, and liquidity driven trading platform. Our team brings deep experience across crypto exc…

View Details
Posted 2026-03-31

Senior Scientist

National Physical Laboratory
Teddington, Greater London

About the Role The Electromagnetic Technologies Group is hiring a Senior Scientist for the Assured Autonomy Group. NPL’s Assured Autonomy programme is supporting a critical technology sector which…

View Details
Posted 2026-04-12

History Teacher (ECT) - Structured Induction - Waltham...

Marchant Recruitment
Waltham Forest, Greater London

ECT: History Teacher – Launch Your Career with a Structured, Rigorous Induction Programme – Waltham Forest A progressive secondary school in Waltham Forest is seeking an enthusiastic ECT of Hi…

View Details
Posted 2025-10-16