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Senior Microsoft Sentinel / SIEM Engineer, Watford, Hertfordshire
Client: Cloud Decisions
Location: Watford, Hertfordshire, United Kingdom
Job Category: Other
EU work permit required: Yes
Job Views:
3
Posted:
31.05.2025
Expiry Date:
15.07.2025
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 MVPs 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 forefront of cyber defense, 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 customized Sentinel integration engineering. This will stretch your skills, give you opportunities to ingest complex logs from various cloud and data sources, and allow you to learn as you go.
The Role
You'll own and optimize 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, normalize, and optimize log telemetry to ensure precision and cost control
* Partner with IR teams on real attacks – tuning rules against live threat actor activity
* Collaborate closely with Microsoft teams to build cutting-edge detection capabilities
* Contribute to internal knowledge bases and help shape engineering standards
What's needed?
* Experience building and integrating complex Microsoft Sentinel solutions at SMC and enterprise levels
* 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 plus
* Comfortable working in fast-paced, customer-facing delivery environments
The Technical Skills:
* PowerShell, Python, REST APIs
* Log ingestion and parsing across multiple 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 troubleshoot and resolve issues independently
* Sentinel/Log Analytics Cost Management and Data Optimization
What’s In It for You?
* Direct access to Microsoft Sentinel product teams and early feature previews
* Involvement in real-world nation-state attack detection
* Opportunities to stretch and sharpen your Sentinel skills
* Be part of a Microsoft Security elite MISA and Depth partner
* Exposure to multi-cloud detection and advanced security automation
* Fully remote, flexible work culture with global team collaboration
* Recognition, career growth, and development within a respected security consultancy
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