_{27th August, 2026}

Job Title: Network Administrator (RDL - Research and Development Lab)
Client: Private Sector Technology Company
Duration: 6 contract with potential extension
Location: Toronto, ON - Remote 
 
Job Overview
We are seeking a Senior Network Administrator to support secure, isolated R&D lab environments. This is a hands-on role combining enterprise networking, Linux security/hardening, network segmentation, and secure privileged access.
 
Responsibilities

• Configure and support switching, routing, VLANs, firewall rules, and SD-WAN
• Design and maintain secure network segmentation and isolated R&D lab environments
• Perform Linux hardening, SSH/PAM configuration, local RBAC, and secure account management
• Integrate Zscaler ZTNA, CyberArk vPAM, and virtualized Jump Hosts
• Implement secure audit logging and controlled access requirements
• Manage NAC/ClearPass onboarding and access controls
• Troubleshoot complex network, connectivity, and security issues
• Maintain network and security documentation

RequirementsMust-Have

• Strong Linux administration and security hardening experience
• Advanced switching/routing, VLAN segmentation, and firewall experience
• Experience with SSH, PAM, RBAC, and secure access management
• Hands-on experience with NAC/ClearPass and network isolation
• Experience supporting secure R&D, lab, or engineering environments

Nice-to-Have

• Zscaler ZTNA and CyberArk vPAM
• SD-WAN experience
• Virtualized Jump Host administration
• Experience with export-controlled or highly secured environments

 

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