Senior Network Administrator

Holt Renfrew offers you an inspiring, fashion-driven environment with opportunities to learn and grow. From our incredible partnerships with iconic luxury brands, to our commitments to corporate social responsibility, you will be inspired every day.

A job at Holt Renfrew offers a competitive total compensation, a generous employee discount, pension, and health & dental benefits, tuition assistance, and continuous learning and development.

The
** Senior Network Administrator
** maintains and supports the network for 24 hours, 7 days a week availability. The Senior Network Administrator - Security role is responsible for protecting our critical information assets and brand reputation via number of security technologies, process and governance.  The role will ensure compliance with corporate and regulatory policies/standards & industry best practices, enhancing and enabling business initiatives.
*
* Key Responsibilities:

**** Infrastructure Operations & Maintenance
*** Maintain and administer on-premises and cloud-based infrastructure, including Windows and Linux servers, storage platforms, virtualization environments, and data centre/store virtual server estates.
* Manage cloud email and collaboration platforms (e.g., Microsoft Exchange Online / M365), including configuration, security, and day-to-day operations.
* Monitor system performance, capacity, and availability; respond to alerts and proactively tune systems to prevent service degradation and outages.
* Perform regular system updates, patching, and firmware upgrades in alignment with formal change-management practices and maintenance windows.
* Collaborate with network teams for switches, firewalls, VPNs, Wi-Fi, and secure remote access for staff and vendors.
** Identity & Access Management
*** Design, operate, and secure enterprise-wide identity platforms, including Active Directory, Azure AD, LDAP and related directory services.
* Administer user and service accounts, groups, and security roles across identity platforms and business applications, ensuring least-privilege access.
* Manage access provisioning and de-provisioning via identity management systems, including creation, issuance, review, and monitoring of user profiles, passwords, and access codes.
* Protect systems by defining and enforcing access privileges, control structures, and segregation of duties, and by ensuring appropriate approvals, attestation, and periodic access reviews.
** Security Architecture, Engineering & Governance
*** Serve as a subject matter expert (SME) in information security, combining strong technical depth with business acumen to provide security assurance across the IT environment.
* Develop, maintain, and continuously improve security technologies, processes, and governance frameworks to support a proactive security posture and the organization’s information security roadmap.
* Implement and maintain baseline security configurations (system hardening, secure protocols, endpoint and server protection, encryption, and least-privilege models).
* Enforce security governance by administering and tuning security technologies such as IPS/IDS, firewalls, endpoint protection/EDR, server patching tools, DLP, proxy and email filtering, and identity/security logging solutions.
* Participate in Demand Intake, Architecture Review Board (ARB), and Change Advisory Board (CAB) meetings, providing security guidance, reviewing proposed solutions, and ensuring designs align with industry best practices and are sustainable.
* Contribute security requirements and risk perspectives to IT and business projects, acting as the resident Security Specialist from design through implementation.
** Security Monitoring, Incident Response & Problem Management
*** Safeguard information system assets by identifying, analyzing, and resolving potential and actual security problems in a timely manner.
* Investigate, triage, and respond to security alerts, violations, and exceptions to established controls, determining when issues should be escalated into formal incident management processes.
* Provide timely incident resolution in line with SLA objectives, including clear communication, documentation of…