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Added 2 months ago
AI
Senior Hardware Test Engineer
Aversan Inc.
Toronto, ON
- Full-time
We are currently seeking a qualified Senior Hardware Test Engineer to join our team.
Added 2 months ago
SM
Software Engineer
Sonus Microsystems
Vancouver, BC
- Full-time
…operator-independent patient monitoring, and we're looking for a Software Engineer to join our highly collaborative team of scientists, engineers, and innovators working at the intersection…
Added 2 months ago
PD
Senior Network Analyst
Precision Drilling
Calgary, AB
- Full-time
This role is ideal for a hands-on engineer with deep firewall, routing, and switching expertise who wants to work on real-world, business-critical infrastructure - not just maintain it.
Added 2 months ago
A
Ingénieur principal ou ingénieure principale / responsable technique
Alithya
Pickering, ON
- Full-time
As a Senior Engineer and Technical Lead, you'll join our Engineering Sub-Division, a multidisciplinary team focused on delivering innovative engineering solutions and professional services.…
Added 2 months ago
P
Senior Software Architect
Prophix
Toronto, ON · Etobicoke, ON
- Full-time
10+ years of software engineering experience, with a significant portion spent in a software architecture or principal engineer role within a SaaS or cloud-native product environment
Added 1 month ago
Threat Intelligence Engineer
Take-Two Interactive Software, Inc.
Toronto, ON
We are looking for a Threat Intelligence Engineer. In this role, you will be on the front lines of our defense, helping to operationalize intelligence and build engineering solutions to…
Added 2 months ago
Commissioning Engineer
Systemex
Montreal, QC
…processes, fostering innovation, strengthening governance, enhancing cybersecurity, and leveraging Artificial Intelligence (AI) to deliver greater value to our employees and…
Added 2 months ago
S
Intermediate Engineer – Process Performance and Operational Readiness
Systemex
Montreal, QC
- Full-time
…processes, fostering innovation, strengthening governance, enhancing cybersecurity, and leveraging Artificial Intelligence (AI) to deliver greater value to our employees and…
Added 2 months ago
S
Automation Project Engineer Manager
Systemex
Laval, QC
- Full-time
…processes, fostering innovation, strengthening governance, enhancing cybersecurity, and leveraging Artificial Intelligence (AI) to deliver greater value to our employees and…
Added 2 months ago
S
Senior Engineer – Process Performance and Operational Readiness
Systemex
Montreal, QC
- Full-time
…processes, fostering innovation, strengthening governance, enhancing cybersecurity, and leveraging Artificial Intelligence (AI) to deliver greater value to our employees and…
Added 2 months ago
S
Senior Advisor, Asset Management & Operational Efficiency
Systemex
Montreal, QC
- Full-time
…processes, fostering innovation, strengthening governance, enhancing cybersecurity, and leveraging Artificial Intelligence (AI) to deliver greater value to our employees and…
Added 2 months ago
D&
IT & Security Manager / Administrator - Toronto On.
Dokainish & Company
Toronto, ON
- Full-time
Maintain cybersecurity policies, standards, procedures, and technical controls appropriate to the company’s operations and client requirements.
Added 1 month ago
B
Business Process Architect, Embedded Software
BRP
Valcourt, QC
- Full-time
We are seeking an experienced engineer with a passion for embedded software development processes to fill the position of Embedded Software Business Process Architect. Reporting to the…
Added 2 months ago
BC
Sr. Site Reliability Engineer
Blackpoint Cyber
Remote, Canada
- $155,000 to $185,000 CAD / year
- Full-time
- Remote
Blackpoint Cyber is the leading provider of world-class cybersecurity threat hunting, detection and remediation technology. Founded by former National Security Agency (NSA) cyber operations…
Added 2 months ago
PI
Principal RF Modeling & Characterization Engineer
Palitronica Inc.
Waterloo, ON
- $140,000 to $180,000 CAD / year
- Full-time
Palitronica is seeking a Principal RF Modeling & Characterization Engineer to develop the predictive RF models and characterization methods needed to understand and optimize Anvil's RF…
Added 2 months ago
PI
Principal RF Measurement & Calibration Engineer
Palitronica Inc.
Waterloo, ON
- $140,000 to $180,000 CAD / year
- Full-time
Palitronica is seeking a Principal RF Measurement & Calibration Engineer to advance the measurement science behind Anvil's RF characterization platform.
Added 2 months ago
M
Software Product Assurance Engineer
MDA
Sainte-Anne-de-Bellevue, QC
- Full-time
Assess software cybersecurity risks and ensure that cybersecurity requirements, secure development practices, vulnerability management, and verification activities are appropriately…
Added 2 months ago
M
Sr. Network Systems Engineer, Firewall
McKesson
Mississauga, ON
- Full-time
McKesson is seeking a Senior Network Security Engineer to help design, secure, and evolve our global enterprise network infrastructure. This role serves as a strategic technical leader…
Added 2 months ago
M
Sr. Network Systems Engineer, Firewall
McKesson
Mississauga, ON
- Full-time
McKesson is seeking a Senior Network Security Engineer to lead the design, implementation, and governance of secure enterprise network infrastructure across cloud, data center, and hybrid…
Added 2 months ago
S
Senior Ethical Hacker
Stantec
Toronto, ON
- Full-time
Engineer custom Python, Terraform, and Ansible extensions to enable specialized security and
Added 2 months ago
WI
Senior Professional, Electrical Engineering
WSP in Canada
Montreal, QC
- Full-time
…communications, and digital substation technologies. As a Senior SCADA Engineer based in Edmonton, Alberta, you'll contribute to complex projects that support reliable, efficient, and…
Added 2 months ago
WI
Senior Professional, Electrical Engineering
WSP in Canada
Montreal, QC
- Full-time
…communications, and digital substation technologies. As a Senior SCADA Engineer based in Edmonton, Alberta, you'll contribute to complex projects that support reliable, efficient, and…
Added 2 months ago
WI
Senior Professional, Electrical Engineering
WSP in Canada
Toronto, ON
- Full-time
…communications, and digital substation technologies. As a Senior SCADA Engineer based in Edmonton, Alberta, you'll contribute to complex projects that support reliable, efficient, and…
Added 2 months ago
WI
Senior Professional, Electrical Engineering
WSP in Canada
Calgary, AB
- Full-time
…communications, and digital substation technologies. As a Senior SCADA Engineer based in Edmonton, Alberta, you'll contribute to complex projects that support reliable, efficient, and…
Added 2 months ago
WI
Senior Professional, Electrical Engineering
WSP in Canada
Edmonton, AB
- Full-time
…communications, and digital substation technologies. As a Senior SCADA Engineer based in Edmonton, Alberta, you'll contribute to complex projects that support reliable, efficient, and…

McKesson

Sr. Network Systems Engineer, Firewall

Mississauga, ON, Canada

$99,100 - $132,100 · Full-time

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Job details

Pay: $99,100 - $132,100
Job type: Full-time
Experience: 7+ years of progressive experience in network security engineering, cybersecurity engineering, infrastructure engineering, or related technical roles.
Posting language: English
Posted: Aug 19, 2026

Original job description

McKesson is an impact-driven, Fortune 10 company that touches virtually every aspect of healthcare. We are known for delivering insights, products, and services that make quality care more accessible and affordable. Here, we focus on the health, happiness, and well-being of you and those we serve – we care.

What you do at McKesson matters. We foster a culture where you can grow, make an impact, and are empowered to bring new ideas. Together, we thrive as we shape the future of health for patients, our communities, and our people. If you want to be part of tomorrow’s health today, we want to hear from you.

About the Role

McKesson is seeking a Senior Network Security Engineer to lead the design, implementation, and governance of secure enterprise network infrastructure across cloud, data center, and hybrid environments. This role will drive the evolution of McKesson’s network security architecture through Zero Trust principles, segmentation strategies, secure access technologies, and advanced threat detection capabilities. The ideal candidate combines strong network engineering expertise with a modern security mindset and the ability to build scalable, resilient, and compliant infrastructure that supports critical business operations.

What You'll Do

Lead the design and implementation of secure network architectures using Zero Trust principles.

Develop and maintain network segmentation and micro-segmentation strategies to reduce attack surface and improve security posture.

Perform security architecture reviews and provide technical recommendations for infrastructure modernization initiatives.

Manage and optimize Palo Alto firewalls, network security policies, and perimeter defense controls.

Support Zscaler, Secure Internet Gateway, web proxy, and HPE EdgeConnect technologies across enterprise environments.

Design and support secure remote-access solutions including Zero Trust Network Access (ZTNA), VPN, and Network Access Control (NAC).

Monitor and analyze network traffic using IDS/IPS technologies, threat detection platforms, and security analytics tools.

Partner with cloud, infrastructure, and platform engineering teams to ensure secure, scalable, and compliant network services.

Minimum Requirements

7+ years of progressive experience in network security engineering, cybersecurity engineering, infrastructure engineering, or related technical roles.

Bachelor's degree or equivalent combination of education and experience.

Hands-on experience designing and supporting enterprise network security architectures.

Experience administering enterprise firewall platforms, including Palo Alto Networks.

Experience with Zero Trust Architecture, network segmentation, and secure network design.

Experience supporting VPN, ZTNA, NAC, or related identity-based network access technologies.

Experience with IDS/IPS technologies, network traffic analysis, and security monitoring.

Ability to communicate technical concepts and influence security decisions across multiple teams.

Preferred Skills

Experience with Zscaler, Secure Internet Gateway technologies, and web proxy solutions.

Experience supporting HPE Aruba EdgeConnect or SD-WAN environments.

Knowledge of micro-segmentation technologies in multi-cloud or hybrid environments.

Experience securing cloud networking environments within AWS, Azure, or GCP.

Knowledge of infrastructure automation tools such as Terraform, Ansible, or Puppet.

Experience with Kubernetes, container security, and modern platform engineering practices.

Experience working in healthcare or other highly regulated industries.

Security certifications such as CISSP, PCNSE, CCNP Security, CCIE Security, Zscaler certifications, or equivalent.

Travel, Work Environment & Physical Requirements

Hybrid or remote work arrangement based on business needs.

Limited travel may be required for team collaboration, strategic planning sessions, or project implementation activities.

Ability to work on a computer for extended periods and participate in virtual or in-person meetings.

We are proud to offer a competitive compensation package at McKesson as part of our Total Rewards. This is determined by several factors, including performance, experience and skills, equity, regular job market evaluations, and geographical markets. The pay range shown below is aligned with McKesson's pay philosophy, and pay will always be compliant with any applicable regulations. In addition to base pay, other compensation, such as an annual bonus or long-term incentive opportunities may be offered. For more information regarding benefits at McKesson, please click here.

Our Base Pay Range for this position

$99,100 - $132,100

McKesson has become aware of online recruiting-related scams in which individuals who are not affiliated with or authorized by McKesson are using McKesson’s (or affiliated entities, like CoverMyMeds or RxCrossroads) name in fraudulent emails, job postings or social media messages. In light of these scams, please bear the following in mind:

McKesson Talent Advisors will never solicit money or credit card information in connection with a McKesson job application.

McKesson Talent Advisors do not communicate with candidates via online chatrooms or using email accounts such as Gmail or Hotmail. Note that McKesson does rely on a virtual assistant (Gia) for certain recruiting-related communications with candidates.

McKesson job postings are posted on our career site: careers.mckesson.com.

McKesson is an Equal Opportunity Employer

McKesson provides equal employment opportunities to applicants and employees, without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability, age, genetic information, or any other legally protected category. For additional information on McKesson’s full Equal Employment Opportunity policies, visit our Equal Employment Opportunity page.

McKesson is committed to being an Equal Employment Opportunity Employer and offers opportunities to all job seekers including job seekers with disabilities. If you need a reasonable accommodation to assist with your job search or application for employment, please contact us by sending an email to (United States) Disability_Accommodation@McKesson.com or (Canada) Accessibility@mckesson.ca. Resumes or CVs submitted to this email box will not be accepted.

Join us at McKesson!

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More about this job

Responsibilities

Lead the design, implementation, and governance of secure enterprise network infrastructure across cloud and hybrid environments using Zero Trust principles. Manage and optimize firewall platforms, network segmentation strategies, and advanced threat detection capabilities to ensure a secure and compliant infrastructure.

Requirements

Requires 7+ years of progressive experience in network security or infrastructure engineering and a bachelor's degree or equivalent. Candidates must have hands-on experience with enterprise firewall platforms, Zero Trust architecture, and secure network design.

Skills

Network security engineering
Zero Trust architecture
Palo Alto firewalls
Network segmentation
Micro-segmentation
Zscaler
VPN
ZTNA
NAC
IDS/IPS
Security architecture
Threat detection
Cloud networking
Infrastructure modernization
Network traffic analysis

Benefits

Annual bonus
Long-term incentive opportunities

Visa sponsorship

Not detected in the job text

Keywords

Network Security
Zero Trust
Palo Alto Networks
Zscaler
HPE EdgeConnect
SD-WAN
AWS
Azure
GCP
Terraform
Ansible
Puppet
Kubernetes
CISSP
PCNSE
CCNP Security
CCIE Security
Cybersecurity
Infrastructure Engineering
Micro-segmentation
VPN
ZTNA
NAC
IDS/IPS
Cloud Networking
Hybrid Environment
Data Center
Security Analytics
Compliance
Healthcare

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