Cyber Security Engineer

Alexander Mann Solutions - Public Sector Resourcing • Contract • Warrington, Warrington, England, United Kingdom • 8h ago

Work at Sellafield Ltd, and you’re not just building a career. You’re embarking on a mission. Joining 11,000 people on a 100-year project transforming the Sellafield site for all the generations that follow. We have the site at Sellafield (West Cumbria) and our office at Risley (near Warrington). Join us and you’ll work shoulder-to-shoulder with industry-leading – sometimes world-leading – experts. There are generations and generations of knowledge here and people are only too willing to share it. Our culture of continuous improvement is underpinned by commitment to professional and personal development few can match. Our relentless pursuit of excellence is reflected in our health, safety, security, resilience, and environmental performance standards as well as the quality of the products and services we deliver to our customers.

SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.

Accountabilities

Subject Matter Expert (SME) for log source evaluation and onboarding into Azure Sentinel
Review existing on-premises logging configurations and recommend improvements for cloud ingestion.
Conduct discovery and assessment of log sources, ensuring appropriate classification and prioritisation.
Collaborate with Head of Cyber Operations and other security stakeholders to ensure accurate, consistent logging across platforms.
Deploy and configure native and custom data connectors to support diverse log source integration.
Maintain a standardised process for log source categorisation, enrichment, and validation.

Deliverables

Assess, categorise, and prioritise existing log sources for migration based on telemetry value and risk
Coordinate connector deployment, workspace configuration, and diagnostic settings with platform teams
Configure and validate native, Syslog, API, and custom ingestion paths as needed
Ensure key log types (e.g., Windows Security, Firewall, DNS, Proxy, AD, Identity) are onboarded and actionable
Track onboarding progress and ingestion metrics using workbooks, dashboards, and reports
Document log schemas, ingestion frequency, source ownership, and normalization mappings

Knowledge and Experience

Experience with Microsoft Azure security technologies, especially Azure Sentinel, Log Analytics, and Azure Monitor
Strong understanding of common log formats (Syslog, JSON, CEF, Windows Events, etc.)
Familiarity with cloud migration strategies and hybrid logging environments
Strong documentation skills and attention to detail
Experience with security frameworks such as MITRE ATT&CK, NIST, and CAF
Ability to troubleshoot complex ingestion or parsing issues and resolve at speed

Essential Skills

Proven experience onboarding and managing log sources in Azure Sentinel
Hands-on experience configuring data connectors and diagnostic settings in Azure
Solid understanding of use case development and detection engineering
Knowledge of PowerShell, KQL (Kusto Query Language), and JSON formatting
Familiarity with identity-related logs (Azure AD, ADFS, M365 Defender, etc.)
Experience working in a Security Operations environment or supporting SOC functions
Understanding of network and host-based telemetry relevant for threat detection

Desirable

Azure certifications (SC-200, AZ-500, MS-500)
Experience with LogRhythm SIEM Platform
Knowledge of SOAR tools and automation (Logic Apps, Sentinel Playbooks)

Please be aware that this role can only be worked within the UK and not Overseas.

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