Senior Security & Network Admin

Saint Elizabeth; Markham; Hybrid; CAD 72,000 - 91,000; Full time

Job summary

A leading healthcare organization in Canada seeks a Senior Network Administrator to manage and enhance network infrastructure security. The role involves configuring firewalls, switches, and load balancers while adhering to cybersecurity best practices. Candidates should have substantial experience in network administration, particularly with Palo Alto and Cisco devices. This position offers a competitive salary and the flexibility of a hybrid work model.

Benefits

Comprehensive benefits

Pension options

Tuition support

Flexible work schedule

Car-loan support

Qualifications

• A minimum of 5 years of experience in network administration and security.
• Solid experience with Palo Alto Networks firewalls.
• Experience in managing Cisco switches and load balancers.

Responsibilities

• Configure, manage, and troubleshoot F5 BIG-IP LTM load balancers.
• Administer and optimize network security policies on Palo Alto firewalls.
• Monitor network traffic and generate reports on security incidents.

Skills

Network administration

Cybersecurity best practices

Communication skills

Problem-solving

Education

Cisco Certified Network Professional (CCNP)

Palo Alto Networks Certified Network Security Engineer (PCNSE)

Microsoft Certified: Azure Network Engineer Associate

F5 Certified BIG-IP Administrator (F5-CA)

Tools

F5 BIG-IP LTM

Microsoft Azure

Cisco Nexus

Cisco Meraki devices

DataDog

Job description

Join us in re-imagining health care with the largest social enterprise in Canada. SE Health is leading a multi-year enterprise transformation project that leverages human-centered design to be at the forefront of innovation within the healthcare sector. As a leader in home care, we are expanding and enhancing our capabilities to provide personalized experiences using new platforms and cloud-native architectures, ensuring privacy and security by design. Our transformation is grounded in guiding principles drive to ensure that we prioritize team decisions, long-term planning, process standardization, data-driven insights, and balanced user adoption. If you are driven by the desire to have an impact, change the world of health care and shape the future, we invite you to be part of our journey.

Job Summary

We are seeking an experienced Senior Network Administrator to join our IT team. The successful candidate will be responsible for designing, implementing, and managing our network infrastructure, with a focus on Palo Alto and Azure firewalls, Cisco switches, Meraki wireless access points (WAPs), and F5 load balancers. The role requires a strong working knowledge of cybersecurity best practices and IT Service Management (ITSM) processes to ensure secure, reliable, and efficient network operations.

Job Responsibilities

A. Network Security Infrastructure Management

• Configure, manage, and troubleshoot F5 BIG-IP LTM load balancers to ensure high availability, scalability, and performance of web applications.
• Administer and optimize network security policies and configurations on Palo Alto firewalls, ensuring robust protection against external and internal threats.
• Oversee Microsoft Azure cloud networking solutions, including deployment and management of virtual appliances, to ensure secure cloud connectivity.
• Configure, manage, and troubleshoot Cisco devices including Nexus core switches, ensuring optimal network performance, redundancy, and security.
• Administer and configure wireless access points from various vendors (e.g., Cisco Meraki, Aruba) to maintain a secure, efficient, and high-performance wireless network environment.
• Help develop and enforce firewall policies to protect against unauthorized access, malware, and other threats, including URL filtering, application control, and threat prevention on Palo Alto devices.
• Implement cybersecurity measures as mandated by security team such as intrusion detection/prevention systems (IDS/IPS), secure VPN tunnels, and multi-factor authentication for network access.
• Conduct regular security audits and vulnerability assessments to identify and mitigate risks.
• Create and update detailed network diagrams to accurately reflect the current state of both physical and logical network topologies.

B. Network Monitoring & Reporting

• Continuously monitor network traffic and security events, leveraging available tools to detect and mitigate potential threats.
• Generate reports on network performance, security incidents, and compliance metrics for management review.
• Deploy and manage network monitoring tools (e.g., DataDog) to track performance metrics, bandwidth usage, and potential security incidents.
• Analyze traffic patterns and logs to identify bottlenecks, packet loss, or suspicious activity.
• Fine-tune configurations (e.g., F5 load balancing algorithms, Cisco switch QoS settings, Meraki RF profiles) to optimize performance and user experience.

C. ITSM Processes

• Adhere to ITIL-based ITSM processes for incident, problem, and change management, using tools like JIRA.
• Log and resolve network-related incidents, ensuring timely communication and resolution per service level agreements (SLAs).
• Submit and manage change requests for network configuration updates, ensuring minimal disruption and proper documentation.
• Contribute to problem management by identifying recurring issues and implementing long-term solutions.

D. Documentation and Reporting

• Maintain up-to-date documentation of network configurations, topologies, IP schemas, and security policies.
• Create and update network diagrams using tools like Visio or Lucidchart.
• Generate regular reports on network performance, security incidents, and capacity planning for management and compliance purposes.
• Document troubleshooting steps and resolutions for knowledge base and future reference.

E. Collaboration

• Work with cybersecurity teams to align network configurations with security policies and respond to threats.
• Partner with systems administrators to ensure seamless integration between network and server environments.
• Collaborate with application teams to support specific network requirements (e.g., low-latency for VoIP or high-throughput for data transfers).
• Participate in cross-functional projects, such as cloud migrations or data center expansions.

F. Upgrades and Maintenance

• Plan and execute firmware and software upgrades for Palo Alto firewalls, Cisco switches, Meraki WAPs, and F5 devices to ensure systems are up-to-date and secure.
• Schedule and perform routine maintenance tasks, such as replacing failed hardware or updating configurations, during maintenance windows to minimize impact.
• Test and validate upgrades in a lab environment before production deployment to ensure compatibility and stability.

These responsibilities ensure the Senior Network Administrator maintains a secure, reliable, and efficient network environment while adhering to cybersecurity best practices and ITSM standards.

Experience & Technical Skills

• 5+ years of hands-on experience in network administration and security.
• Strong experience with F5 BIG-IP LTM load balancers, including traffic management and troubleshooting.
• Proficiency in Microsoft Azure networking, including Virtual appliances and ExpressRoute.
• Deep understanding of Palo Alto Networks firewalls, including policy configuration and security monitoring.
• Solid experience with Cisco Nexus switches, VLANs, and routing protocols.
• Experience managing Cisco Meraki wireless devices, including SSID configurations and security protocols.
• Solid problem-solving skills, able to work independently and as part of a team.
• Exceptional communication skills and ability to collaborate with cross-functional teams.
• Ability to handle after-hours support and respond effectively to emergencies.
• Work experience with Datadog, SDWAN, SASE, AI are nice to have.

Availability

Must be available for after-hours work (evenings/weekends) and on-call rotation.

Certifications/Training

• Cisco Certified Network Professional (CCNP) or higher.
• Palo Alto Networks Certified Network Security Engineer (PCNSE).
• Microsoft Certified: Azure Network Engineer Associate.
• F5 Certified BIG-IP Administrator (F5-CA).

Why Join SE Health?

• Competitive Total Rewards: So much more than a paycheque! Enjoy comprehensive benefits, pension, flexible pay options, car-loan support, housing solutions and exclusive staff perks.
• Flexibility & Belonging: Thrive with hybrid work, flexible scheduling and a supportive, inclusive culture that puts people first.
• Purpose & Impact : Join a national social enterprise where your voice matters. Every role helps advance health, spark innovation and strengthen communities across Canada.
• Growth That Meets Your Ambition: Access tuition support, training and meaningful career pathways across a growing, future-focused organization.

About SE Health

SE Health is a not-for-profit social enterprise advancing health with heart. With 115+ years of impact, we bring hope, happiness and exceptional care to people and communities across Canada. We lead with empathy, dignity and purpose while building a future where everyone can realize their full health and well-being potential. We’re also an inclusive, supportive workplace offering competitive compensation, strong benefits and real opportunities to grow. We’re All In Together.

COVID-19

To protect the health of our clients, teams, and communities, all SE Health employees must be fully vaccinated (two doses, 14+ days since the final dose).

Accessibility

If you require accommodations due to illness or disability, please contact Talent Acquisition at [e-mail].

AI and compensation details

We use AI to take notes during our interview. All applications and interviews are reviewed by our Talent Acquisition team. This role is a new addition. The total target compensation for this position is $72,000 - $91,000. The compensation offered is determined based on the successful candidate’s relevant experience, skills, and competencies, taking into consideration internal equity.