Senior Microsoft Sentinel / SIEM Engineer

JR United Kingdom; Hounslow; Remote; GBP 70,000 - 85,000; Full time

Job summary

Une opportunité unique pour un expert en Microsoft Sentinel de rejoindre un partenaire mondial de Microsoft. Ce rôle impactant dans la cybersécurité permettra de contribuer à la défense contre des acteurs menaçants tout en optimisant les intégrations de logs et en collaborant avec des équipes de haut niveau.

Benefits

Accès direct aux équipes produits de Microsoft Sentinel

Immédiatement impliqué dans la détection d'attaques de nation-state

Opportunités de développement de carrière et de progression

Culture de travail flexible et collaboration globale

Qualifications

• Expérience en intégration complexe de Microsoft Sentinel dans des environnements SMC et entreprise.
• Compréhension de la télémétrie de sécurité à travers les couches d'identité, d'endpoint, de cloud et de réseau.
• Compétences en développement de contenu SIEM, y compris KQL et règles analytiques.

Responsibilities

• Optimiser l'intégration des logs d'entreprise dans Microsoft Sentinel.
• Collaborer avec les équipes d'intervention sur des menaces réelles.
• Développer des solutions SIEM personnalisées pour détecter et répondre aux menaces.

Skills

Cyber threat detection

Incident response

SIEM content development

Scripting

Tools

Microsoft Sentinel

PowerShell

Python

APIs

Job description

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Senior Microsoft Sentinel / SIEM Engineer, south west london

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Client:

Cloud Decisions

Location:

south west london, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

3

Posted:

31.05.2025

Expiry Date:

15.07.2025

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Job Description:

Job Title:

To £85,000 + Benefits + Microsoft

Fully Remote, UK

(*Global Microsoft Managed MISA Partner

+ complex Sentinel Engineering/Integration)

The Opportunity

This is a standout opportunity for a Microsoft Sentinel expert to step into a high-impact, technically advanced role with a global security Microsoft powerhouse.

You'll be joining a Microsoft managed global partner, a prominent MISA member, a team with Security MVP's and a Microsoft Verified Safe XDR Solution Partner, and a trusted Security Depth Partner.

In short giving you unparalleled access to Microsoft’s security product roadmap, security previews, and frontline support.

You'll work at the sharp end of cyber defence, directly contributing to investigations involving nation-state threat actors (including IR, CH, and NK based campaigns) while refining your craft across enterprise-scale log ingestion and customised Sentinel integration engineering that will stretch your skills, give you opportunity to ingest complex logs from a mass of cloud and data sources and the chance to learn these as you go.

The Role

You'll own and optimise enterprise-wide log onboarding into Microsoft Sentinel – deploying standard and custom connectors, Function Apps, and parsers to build tailored SIEM solutions that drive real-world threat detection and response.

• Log ingestion at scale across numerous hybrid and multi-cloud environments
• Enhance custom Function Apps and ingestion pipelines
• Parse, normalise, and optimise log telemetry to ensure precision and cost control
• Partner with IR teams on real attacks – tuning rules against live threat actor activity
• Sync closely with Microsoft teams to build cutting-edge detection capabilities
• Contribute to internal knowledge base and help shape engineering standards

What's needed?

• Experience building and integrating complex Microsoft Sentinel at SMC and enterprise
• Understanding of security telemetry across identity, endpoint, cloud, and network layers
• Experience in SIEM content development, including KQL, analytics rules, and custom data connectors
• Scripting and engineering skills – Python, PowerShell, APIs, Function Apps
• A background in cyber threat detection, incident response or DFIR is a real plus
• Comfortable working in very fast-moving, customer facing delivery environments

The Technical Shizzle:

• PowerShell, Python, REST APIs
• Log ingestion and parsing across multi platforms (Azure/AWS/GCP, M365, Defender, Entra, Copilot, Carbon Black, Okta + Tier 1 Network vendors)
• MITRE ATT&CK, threat detection frameworks, IOC enrichment
• Ability to go and work things out is crucial
• Sentinel/Log Analytics Cost Management and Data Optimisation

What’s In It for You?

• Direct access to Microsoft Sentinel product teams and early feature previews
• Deep involvement in real-world nation-state attack detection
• Huge opportunity to stretch and sharpen you Sentinel mastery
• Be part of a Microsoft Security elite MISA and Depth partner
• Exposure to multi-cloud detection and advanced security automation
• Fully remote, highly flexible work culture with global team collaboration
• Recognition, career progression and growth all within a global Microsoft specialist and respected security consultancy