4 results for Systems Administrator in Whitby, ON

Network Administrator

North York, ON
onsite
Permanent
90000 - 120000 CAD / Yearly
We are looking for a Network Administrator to support and maintain reliable network operations in North York, Ontario. This role focuses on ensuring secure connectivity across enterprise environments, resolving performance issues, and helping keep network infrastructure stable and well documented. The successful candidate will work with routing, firewalls, and wide area connectivity while contributing to controlled network changes and ongoing operational improvements. Responsibilities:• Administer and support enterprise network infrastructure, including routing, switching, firewall technologies, and wide area connectivity.• Investigate and resolve complex network outages, latency concerns, and connectivity problems to maintain dependable service.• Implement network modifications in production environments by following established change management practices and minimizing operational risk.• Monitor network performance and apply traffic prioritization and bandwidth management techniques to improve availability and efficiency.• Maintain accurate technical records, diagrams, and operational documentation to support supportability and knowledge sharing.• Collaborate with internal teams to address incidents, service requests, and recurring infrastructure issues in a timely manner.• Support cloud-delivered networking and security platforms, including firewall and software-defined wide area solutions where applicable.• Contribute to network security operations by assisting with access controls, traffic inspection, and protective measures across the environment.
2026-04-22T00:00:00Z

Operations Administrator

North York, ON
onsite
Contract / Temporary
23.75 - 27.5 CAD / Hourly
We are looking for an Operations Administrator to support a well-run, detail-oriented workplace in Toronto, Ontario. This Long-term Contract position is ideal for someone who takes pride in creating an organized office environment, keeping daily operations on track, and responding quickly to issues that affect the employee experience. The successful candidate will combine strong administrative ability with a hands-on approach to facilities coordination, vendor follow-up, and workplace support. Responsibilities: • Oversee the daily upkeep of the office and help ensure shared spaces remain presentable, organized, and ready for use throughout the day. • Conduct regular walkthroughs to identify workplace, equipment, or facility concerns early and arrange prompt resolution to maintain a high standard across the office. • Manage inventory for office materials, refreshments, and kitchen supplies, and place replenishment orders through approved suppliers before stock runs low. • Receive incoming deliveries, organize items efficiently, and restock supply areas so teams have consistent access to needed materials. • Liaise with cleaning providers, maintenance contacts, and other external partners to address service issues and support reliable facility operations. • Coordinate repairs and service requests related to printers, office equipment, and building-related concerns, while following up to ensure completion. • Maintain checklists, trackers, and other administrative tools that support consistent execution of office operations duties. • Provide general administrative assistance, including data entry and record maintenance, and contribute to evolving office support needs across teams. • Manage competing priorities effectively and respond to urgent operational matters with sound judgment and a strong sense of accountability.
2026-05-08T00:00:00Z

Senior Database Administrator

Mississauga, ON
onsite
Permanent
95000 - 115000 CAD / Yearly
We are looking for an experienced Senior Database Administrator to support an organization in Mississauga, Ontario. This position is suited to a senior technical specialist who can strengthen database reliability, guide architectural decisions, and improve performance across enterprise environments. The role works closely with delivery teams and business partners to ensure database solutions are scalable, secure, and aligned with operational priorities. Responsibilities:• Establish and oversee database performance and capacity strategies, including standards that support long-term stability and growth.• Partner with project managers, developers, and business analysts to deliver database components for concurrent business and technology initiatives.• Investigate and resolve production database issues, including performance concerns linked to application code and data processing.• Create detailed testing approaches and maintain reusable scripts to validate database changes before release.• Review requested changes, assess downstream impact, and provide informed estimates for effort, timelines, and implementation considerations.• Develop and maintain automation and support scripts using Perl, shell scripting, and PL/SQL for monitoring, maintenance, and operational support.• Design and implement database architecture across development, test, and production environments to ensure consistency and resiliency.• Participate in an after-hours support rotation to address urgent database incidents and maintain service continuity.
2026-04-29T00:00:00Z

Network Architect

Brampton, ON
remote
Contract / Temporary
80 - 90 CAD / Hourly
We are looking for a Network Architect to support a Contract engagement with a metal fabrication organization in Brampton, Ontario. This role will focus on strengthening network performance, improving switch configurations, and identifying the root causes of connectivity and latency issues across the environment. The successful candidate will bring deep expertise in network architecture and configuration management, along with the ability to optimize infrastructure for reliability, scalability, and day-to-day operational efficiency. Responsibilities: • Assess the current switching environment and provide technical guidance for upgrading legacy HP/Aruba equipment to newer 1830 and 2930 models. • Review and refine switch configurations to ensure the organization is using available features effectively and aligning the network with best practices. • Investigate spanning tree behaviour across the network and implement corrective measures to improve stability and reduce disruption. • Analyze the layer 3 core network design and recommend improvements that support performance, resilience, and future growth. • Examine the integration between the Barracuda firewall and Microsoft Azure to identify configuration or connectivity issues affecting system responsiveness. • Troubleshoot slow network performance related to cloud connectivity and develop practical solutions to improve communication with Azure services. • Evaluate the existing UniFi wireless access point environment and confirm it is operating efficiently within the broader network architecture. • Document findings, proposed changes, and implementation recommendations clearly for internal stakeholders and technical teams.
2026-05-04T00:00:00Z