Cloud Security and Infrastructure Tech Lead - part time

We are seeking an experienced Cloud Security and Infrastructure Tech Lead (part time job) to join the project team.

The person in this role will provide technical leadership and hands-on expertise in Azure cloud infrastructure architecture, security, and operational management. 

Responsibilities

  • Manage the end-to-end vulnerability management process across Azure cloud environments.
  • Coordinate remediation activities for vulnerabilities identified by Microsoft Defender for Cloud, MEND, and penetration testing exercises.
  • Oversee remediation programmes arising from penetration test findings for platform releases.
  • Administer and optimise Microsoft Defender for Cloud, including security policies, alert management, recommendations, and exclusion governance.
  • Design and improve security monitoring processes and integrations between Microsoft Defender for Cloud, ServiceNow, and the SOC.
  • Develop and enhance threat detection and monitoring capabilities within Microsoft Sentinel in collaboration with the SOC.
  • Manage and tune Azure Web Application Firewall (WAF): analyse blocked requests, optimise rules, and implement business-required rule exclusions.
  • Assess the security impact of WAF exemptions and provide risk-based recommendations to stakeholders.
  • Conduct security reviews and risk assessments for new projects, infrastructure changes, and application releases.
  • Support cloud and application teams in resolving security-related issues and implementing security controls.
  • Prepare security reports, risk presentations, and technical recommendations for project stakeholders and client governance forums.
  • Lead the architectural design and secure implementation of Azure cloud infrastructure with emphasis on operational excellence, troubleshooting, and cost management.
  • Drive service operations and delivery assurance processes to align with contractual and stakeholder expectations.
  • Provide technical vision and leadership to motivate the team to deliver incremental improvements aligned with client contracts and relationship goals.
  • Foster a proactive, collaborative approach in managing relationships with clients and internal stakeholders.

Qualifications

  • Proven experience in Azure cloud security and infrastructure architecture, including hands-on administration of Microsoft Defender for Cloud and Microsoft Sentinel.
  • Experience managing vulnerability remediation programmes and coordinating with multiple teams and stakeholders.
  • Proficiency with Azure Web Application Firewall (WAF) tuning and risk assessment of rule exemptions.
  • Strong knowledge of identity and access management concepts including Azure RBAC, Entra ID (Azure AD), PIM, MFA and related integration patterns.
  • Familiarity with containerisation and orchestration technologies (AKS, Kubernetes, Docker, Helm) and associated operational practices.
  • Understanding of modern application architectures: .NET backend, React frontend, REST APIs, microservices and event-driven patterns.
  • Experience with observability and CI/CD tools such as Dynatrace and Azure DevOps or equivalent.
  • Working knowledge of OWASP Top 10 and vulnerability management best practices; experience with secrets management (Azure Key Vault) is desirable.
  • Proven ability to present technical findings and risk-based recommendations to stakeholders and governance forums.

Benefits

  • Part-time (50%) role allowing for flexible working arrangements consistent with project needs.
  • Opportunity to lead security and infrastructure efforts on a high-impact Azure-based programme.
  • Collaborative, outcomes-focused project environment.

 

ID: 787 job_post.published_on: 04/11/2026
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