Senior Security Consultant in London

As a Senior Cyber Security Consultant within a leading Managed Security Service Provider (MSSP) specialising in Microsoft Security Solutions, you will design, secure, and automate cloud-native security platforms with a strong SecDevOps and AI-driven approach. You will help shape the next generation of our managed security services by leveraging Microsoft security technologies, AI-powered threat detection, and emerging agentic AI capabilities.

You will apply both hands-on and strategic expertise to transform our customers' security posture across Microsoft cloud and on-premises environments through modern architecture, design, deployment, and integration of Microsoft Security technologies. You will lead customer workshops, provide technical guidance to stakeholders of all levels, and support the adoption and continuous evolution of managed security services throughout the engagement lifecycle.

This role offers broad opportunities for growth, innovation, and development of subject matter expertise in a fast-moving and dynamic industry.

The role will involve:

• Designing, developing and evolving MSSP-managed security services to support a 24/7 Security Operations Centre.
• Implementing automation using AI and agentic frameworks across monitoring, detection, incident response, remediation and configuration management in Microsoft Defender, Sentinel, and Azure security services.
• Building reusable deployment templates (ARM/Bicep, Terraform), secure CI/CD pipelines, and automated workflows to improve service delivery.
• Developing integration tooling using PowerShell, KQL, Logic Apps, Azure Functions, PowerApps, and Sentinel playbooks.
• Contributing to continuous improvement, innovation, and the service roadmap for cloud-native, automated, and AI-assisted security operations.
• Designing Microsoft security reference architectures for public, private, and hybrid cloud environments.
• Applying Zero Trust principles and guiding customers through gap analysis and implementation.
• Leading customer-facing engagements covering assessments, workshops, solution design, implementation, and optimisation.
• Architecting and deploying Microsoft security solutions including Microsoft Defender XDR, Microsoft Sentinel, Entra ID & Entra ID Protection, Microsoft Purview, and Azure-native network, identity and data security.
• Acting as a trusted advisor to help customers accelerate adoption, improve security maturity, and maximise value from Microsoft platforms.
• Co-leading project delivery across discovery, analysis, design, build, test and deployment phases.
• Translating complex problems into clear technical solutions and actionable recommendations.
• Supporting secure identity management implementations and modern access governance.
• Providing structured documentation, reporting, and actionable output for customers.
• Supporting account managers by providing technical expertise for bids, RFPs, proposals, and with customer service reviews to ensure correct adoption of technologies and services.
• Developing solution architectures, statements of work, and technical proposals for new and existing services.
• Clearly articulating the business value of SecDevOps, automation, AI-driven security services, and MSSP models to stakeholders.
• Guiding customers on strategic security roadmaps aligned with business goals.
• Being an inspirational example to less experienced colleagues, providing mentoring and knowledge sharing across SecDevOps, AI, and Microsoft security domains.
• Contributing to platform engineering strategy, delivery methodologies, and internal security capability development.
• Staying current with emerging threats, Microsoft product evolution, AI developments, and cloud security best practices.

We are looking for someone with:

• Strong understanding of modern cyber security principles, threat detection, incident response, and security operations.
• Proven experience designing and implementing secure architectures in Microsoft 365 and Azure.
• Knowledge of security standards like CIS, NIST and GDPR.
• Strong competencies in SecDevOps practices including CI/CD pipeline design and security, Infrastructure-as-Code, and automation tooling.
• Experience working with AI or AI-adjacent technologies.
• Understanding of AI security principles.
• Ability to articulate the business value of SecDevOps, automation, and AI-driven security services.
• Good stakeholder management and interpersonal skills.
• Ability to manage priorities and multi-task.
• Workshop skills for conveying information to customers.
• Ability to consistently deliver quality within expected timeframes and on budget.

Benefits:

• 25 days annual leave.
• Pension scheme.
• Private health insurance.
• Enhanced maternity and paternity leave.
• Death-in-service life cover.
• Shopping discounts.
• Cycle to work scheme.
• Season ticket/gym loans.
• Online wellbeing centre.
• Free tea and coffee.
• And more!

This job description is intended to convey information essential to understanding the scope of the role and it is not intended to be an exhaustive list of skills, efforts, duties, responsibilities or working conditions associated with the position.