Senior Platform Operations Engineer

Key Responsibilities

• Maintain and monitor the cybersecurity go-live tracker for new systems, technology refreshes and migrations, including ownership, outstanding evidence, target go-live dates and closure status.
• Perform first-level completeness checks of cybersecurity go-live documentation before submission to the relevant cybersecurity team.
• Review cybersecurity assessment reports and supporting evidence to ensure they are the latest submitted versions and identify unresolved findings, deviations or risk-treatment items requiring further review.
• Coordinate with system representatives, infrastructure teams, application vendors and IT Security Officers to close outstanding go-live prerequisites and maintain records of follow-up actions.
• Track pre-go-live and post-go-live actions, including the removal or downgrade of temporary access, troubleshooting rules and elevated privileges.
• Prepare consolidated readiness status reports and elevate blockers or overdue items that may affect planned go-live dates.

Cybersecurity Go-Live Readiness and Clearance Support

• Process approved cloud access and role-assignment requests in accordance with approved access-control processes and segregation-of-duties requirements.
• Support the assignment, modification and removal of approved Azure role-based access control (RBAC) permissions and relevant cybersecurity administration groups based on authorised service requests or approvals.
• Maintain auditable records of access assignments, changes, removals and supporting approvals.
• Perform periodic checks and follow-up for temporary or elevated cloud access, including removal or downgrade when no longer required.
• Escalate unclear, excessive, conflicting or unsupported access requests to the relevant cybersecurity team before implementation.
• Support user access administration activities where assigned, while observing segregation of duties between request, approval and access administration.

Cloud Access and RBAC Administration

• Monitor and review Cloud Security Posture Management (CSPM) findings from applicable cloud security platforms, including Microsoft Defender for Cloud and AWS Security Hub.
• Categorise and prioritise findings using approved prioritisation criteria, including severity, Internet exposure and applicable compliance requirements.
• Identify appropriate remediation actions and coordinate with system representatives, application teams and cloud infrastructure teams to implement corrective measures.
• Track responses, remediation progress and outstanding actions in the cloud security findings and compliance register.
• Assess security misconfigurations, compliance deviations and potential vulnerabilities. Validate each finding's applicability and accuracy against the affected resource, configuration and available evidence, including identifying and documenting false positives for cybersecurity review.
• Maintain records of outstanding findings, technical justifications, false-positive assessments, risk treatment, approved deviations, exception expiry dates, remediation status and documented closure evidence.
• Validate remediation evidence before recommending closure for review.
• Escalate overdue, recurring, high-risk or disputed findings to the relevant cybersecurity team for assessment and direction.
• Prepare recurring cloud security posture and compliance updates, highlighting critical findings, overdue remediation, recurring misconfigurations and items requiring management direction.

Cloud Security Technical Support

• Provide technical support on AWS and Azure security configurations, including assessment of configuration issues identified through CSPM findings, compliance reviews and technical support requests.
• Review identity and access management, privileged access, network security, encryption and cloud resource configurations to identify misconfigurations and recommend corrective actions.
• Investigate cloud security configuration issues, assess technical context and dependencies, and recommend corrective actions to the responsible infrastructure or application team.
• Obtain cybersecurity direction where proposed resolutions involve a security exception or risk decision.
• Coordinate with cloud infrastructure teams, service providers and application vendors to resolve security-related configuration issues, clarify remediation requirements and validate supporting evidence.
• Ensure production configuration changes remain subject to approved change-management and authorisation processes.
• Support configuration reviews and technical validation of cloud resources against applicable security requirements, documenting issues, recommended reso