Network administrator Jobs in East York, ON

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 organizations 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 actions taken and knowledge transfer to support teams.

Perform root-cause analysis for major security and infrastructure incidents and implement corrective and preventive measures to reduce recurrence.

Provide Tier 2 / Tier 3 support for complex infrastructure and security issues escalated by the service desk or business units.

Provide after-hours and on-call emergency security and infrastructure support as required by operational procedures.

Threat Intelligence Risk & Compliance

Stay current with information security trends threat intelligence intrusion techniques vulnerabilities and social engineering methods; translate this knowledge into practical controls and risk advice for the organization.

Assist with vulnerability management and remediation by applying patches configuration changes and compensating controls in coordination with security and infrastructure teams.

Ensure adherence to internal policies and relevant standards and regulations (e.g. password policies data handling guidelines access review requirements PCI or similar frameworks where applicable).

Work with internal and external auditors to provide evidence respond to findings and lead or support remediation activities.

Identify security violations control gaps and process inefficiencies through periodic reviews and audits and drive closure of gaps identified by third-party assessments penetration tests and vulnerability scans.

Backup Recovery & Business Continuity

Design configure and monitor backup and recovery solutions for servers applications and critical data across data centre and distributed environments.

Maintain and optimize backup / restore infrastructure including off-site and disaster-recovery capabilities to meet defined RPO / RTO targets.

Conduct regular backup verification and restore tests to validate recoverability and compliance with business continuity objectives.

Contribute to disaster recovery (DR) and business continuity planning documentation and periodic exercises ensuring that infrastructure and security controls support agreed recovery strategies.

Documentation Knowledge Management & Continuous Improvement

Create and maintain up-to-date technical documentation for systems configurations security controls procedures architecture diagrams and operational runbooks.

Develop and maintain security and operational process / procedure documentation to support consistent execution and onboarding of new team members.

Identify recurring incidents and inefficiencies and propose automation tooling or process improvements to enhance stability security and operational efficiency.

Maintain professional and technical knowledge by attending educational workshops reviewing relevant publications and collaborating with internal and external security stakeholders and leadership.

The ideal candidate :

Information Technology Degree / Diploma

MCSE Certified

CISSP (Certified Information Systems Security Professional) designation or actively in pursuit

CISM (Certified Information Security Manager) designation or actively in pursuit

Advanced knowledge of Active Directory virtual server technologies (Hyper-V) Microsoft Server platforms MS Exchange backup technologies network protocols / firewalls Microsoft System Center Configuration Manager and best security practices and compliance rules and other identity and access management technologies

Be fully knowledgeable with practices and related tools for Data Centre Management and IT Operation functions (including ITIL ITSM and Change Management)

Have strong customer focus and relationship management skills

Have advanced technical skills for technology infrastructure management (including WAN LAN Server Network Management Telecommunication)

Have proven ability to lead a technical support team; possess consultative and coaching skills

Have 4-6 years advance technical experience preferably in a retail environment

Holt Renfrew is an equal opportunity employer committed to fostering a diverse and inclusive workplace. Our future success depends on the perspectives and contributions of all our employees their diverse backgrounds abilities and experiences make our business stronger. If you are contacted for a job opportunity and require accommodation please email and let us know so we can ensure you have an accessible candidate experience throughout the recruitment process. All requests are confidential and used only to meet candidate needs.

Required Experience :

Senior IC

Key Skills

Network Administration,Solarwinds,LAN,Computer Networking,HTTPS,Windows,TCP,Ftp,Microsoft Exchange,Cisco ASA,Juniper,Dns

Employment Type : Full-Time

Experience : years

Vacancy : 1