Linux Systems Administrator

Our client, a rapidly growing healthcare technology company supporting clinics across Canada and the U.S., is seeking a Linux Systems Administrator to help strengthen and scale their IT operations.

In this role, you’ll take ownership of hybrid infrastructure spanning on-prem and cloud environments, ensuring performance, reliability, and automation at every level. From virtualization and networking to CI/CD and system monitoring, you’ll play a key role in maintaining a secure, high-availability environment that supports critical business systems.

💻 Who You Are

You’re a versatile IT professional who thrives in complex environments and enjoys building resilient systems through automation. You bring a balance of hands-on technical skills, structured problem-solving, and a forward-thinking mindset. You’re comfortable managing both legacy and modernized platforms, ensuring infrastructure runs smoothly, efficiently, and securely.

📍 Work Type

• Fully Onsite – 5 days a week in office
• Location: Vaughan, ON
• Vacancy Type: This is a newly created position

Requirements

🎯 What You’ll Do (Your Superpowers)

• Manage and maintain VMware, Proxmox, and Azure environments to ensure a stable, secure, and scalable infrastructure.
• Administer and optimize enterprise network infrastructure, including switches, routers, firewalls, VLANs, VPNs, and wireless connectivity to ensure reliable network performance.
• Configure and maintain pfSense, HAProxy, Cisco networking devices, and core network services (DNS, DHCP) to support high availability and secure connectivity.
• Implement and maintain network security best practices, including firewall policies, segmentation, access controls, and secure remote connectivity.
• Automate infrastructure provisioning, configuration, and deployments using Ansible and related automation tools.
• Oversee server hardware, NAS, and backup solutions, ensuring redundancy, disaster recovery, and data protection.
• Administer and optimize Linux and Windows servers, performing patching, performance tuning, and troubleshooting across both systems and network environments.
• Deploy and manage Docker and Kubernetes environments, improving application scalability and microservices performance.
• Monitor infrastructure and network health using Grafana, Prometheus, and Zabbix, implementing proactive alerting, logging, and performance monitoring.
• Manage and maintain MySQL, MongoDB, and SQLite databases with a focus on reliability, replication, backup, and performance optimization

⭐ What We’re Looking For (Our Wishlist)

• 4+ years of hands-on experience in systems administration, network administration or infrastructure engineering
• Strong understanding of Linux server administration (required), with experience managing Windows environments
• Strong networking knowledge, including TCP/IP, routing, switching, VLANs, DNS, DHCP, VPNs, load balancers, and enterprise firewall administration
• Proven skills in virtualization platforms such as VMware and Proxmox
• Hands-on experience configuring and troubleshooting network infrastructure, including Cisco networking equipment, pfSense firewalls, and high-availability networking solutions
• Experience implementing infrastructure and network security best practices, including segmentation, access controls, and secure remote connectivity
• Experience working in cloud environments (Azure preferred), including hybrid or multi-site architectures
• Experience managing databases (MySQL, MongoDB, SQLite) for performance and reliability
• Strong analytical and troubleshooting abilities with a focus on uptime, efficiency, and scalability
• Excellent documentation, communication, and collaboration skills
• A proactive mindset, always looking for opportunities to improve reliability and automate repetitive tasks

🔥 What Makes This Role Exciting

• Innovation & Impact – Work across cutting-edge cloud, virtualization, and infrastructure technologies to keep critical systems running efficiently
• Autonomy & Ownership – Take the lead on infrastructure optimization, automation, and performance tuning projects
• Continuous Learning – Expand your skills with modern tools and architectures across multiple environments
• Collaborative Culture – Join a team that values curiosity, initiative, and innovation

Benefits

• Base Salary: $80,000 – $100,000
• Paid Time Off: Competitive vacation and personal days to maintain a healthy work-life balance
• Health Spending Account & Dental Coverage: Flexible coverage to support your individual and family health needs
• Culture & Team: Be a part of a supportive cross-functional team, that thrives on collaboration and innovation, where every member's ideas are valued and contribute to shared goals and success

📩 Ready to Elevate Your IT Career? Apply Now!

At STACK IT Recruitment, we connect top technical talent with standout opportunities across Canada. If you meet at least 70% of the qualifications, we encourage you to apply — we’d love to chat!

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AI Use Disclosure:
STACK IT uses AI-enhanced tools to support initial candidate screening and interview note analysis. All assessments and hiring decisions remain human-led.