Senior Security Architect - MSSP, Zero Trust & XDR

Nettitude Group; Birmingham; On-site; GBP 90,000 - 120,000; Full time

Job summary

LRQA seeks a Principal Security Consultant to lead complex security engagements across SOC, SIEM/SOAR, XDR/EDR, identity, and cloud security. You will design, implement and mature security architectures, working with SOC, engineering and pre-sales to deliver secure solutions aligned to regulatory expectations.

You will produce reusable architectural artefacts, engage with clients, and drive continuous improvement across consultancy and managed services delivery.

Qualifications

• Experience delivering complex security consultancy engagements in MSSP or managed services.
• Design and implement enterprise security architectures across Microsoft and mixed-vendor environments.
• Hands-on expertise in Microsoft security ecosystem and related compliance tools.
• Experience maturing SOC capabilities, including SIEM/XDR integrations and detection engineering.
• Strong knowledge of Zero Trust, NIST CSF, ISO 27001, PCI DSS, and CSA guidance.
• Experience in partner delivery models with customer-facing consultancy and reference architectures.
• Ability to translate technical risk and delivery outcomes into clear guidance for stakeholders.
• Experience improving MSSP delivery processes, documentation and standardisation.

Responsibilities

• Lead the design and implementation of defensive security services focusing on Microsoft or CrowdStrike ecosystems.
• Develop reference architectures, target operating models, and design patterns across MS-native and non-MS tech.
• Integrate security controls within complex hybrid and multi-cloud architectures.
• Provide oversight across multiple engagements ensuring alignment with Zero Trust and regulatory frameworks.
• Deliver end-to-end consultancy engagements across SOC/SIEM/SOAR, XDR/EDR, cloud security and vulnerability management.
• Act as senior technical authority for high-impact engagements and security transformation programmes.
• Produce architectural artefacts, templates, and automation to enable scalable delivery.
• Collaborate with sales, pre-sales, PMO and delivery teams to scope, estimate, and transition designs to delivery.
• Maintain and improve standard methodologies and delivery processes.

Skills

Security consulting

SOC design

SIEM/SOAR

XDR/EDR

Cloud security

Identity management

Zero Trust

Security frameworks

Microsoft Sentinel

Defender XDR

Purview

Entra ID

Defender for Cloud

CISSP

CISM

Tools

Microsoft Sentinel

Defender XDR

Purview

Entra ID

Defender for Cloud

Job description

LRQA seeks a Principal Security Consultant to lead complex security engagements across SOC, SIEM/SOAR, XDR/EDR, identity, and cloud security. You will design, implement and mature security architectures, working with SOC, engineering and pre-sales to deliver secure solutions aligned to regulatory expectations.

You will produce reusable architectural artefacts, engage with clients, and drive continuous improvement across consultancy and managed services delivery.