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Added 8 mins ago
T
Software Engineer II - Angular UI
TD
Toronto, ON
- Full-time
Document and verify system components, applications, system infrastructure, security, integration, operability and engineering related architecture designs associated with a program or…
Added 8 mins ago
Level 2 IT Support Technician
Quadbridge
Montreal, QC
· Act as a Level 2 escalation resource for infrastructure, networking, and security-related incidents
Added 8 mins ago
US
Adobe CDP Architect
United Software Group Inc
Vancouver, BC
- $100 to $110 CAD / hour
- Contract
Lead journey-mapping and use-case refinement workshops with business and technology stakeholders.
Added 9 mins ago
ZS
Senior Data Warehouse Engineer
Zodiac Solutions, Inc
Toronto, ON
- Full-time
Redesign ingestion, transformation, and consumption patterns from HDFS-based architecture to cloud object storage and Delta Lake
Added 38 mins ago
P
Sr. HRIS Analyst
PointClickCare
Mississauga, ON
- $84,000 to $105,000 CAD / year
- Full-time
With the largest long-term and post-acute care dataset and a Marketplace of 400+ integrated partners, our platform serves over 30,000 provider organizations, making a real difference in…
Added 38 mins ago
AS
Technical Lead - AI Delivery
Ardent SoftSol Inc.
Brampton, ON
- Contract
They will possess deep expertise in Oracle AI Agent Studio, Oracle Fusion Cloud Applications, AI architecture, GenAI technologies, and enterprise integration patterns. This individual will…
Added 38 mins ago
IG
DevOps Engineer | Azure + GitHub Enterprise
Insight Global
Toronto, ON
- $62.86 to $68.75 CAD / hour
- Contract
Strong understanding of Azure identity, access management, secrets management, and cloud security
Added 38 mins ago
CF
IT Change Management and Release Engineer II
CI Financial
Toronto, ON
- Full-time
Review and authorize all on-prem and cloud software deployments based on proper process, verified authorization and testing (including making assignments to other IT teams as necessary)
Added 38 mins ago
P
Workforce Transformation Manager (HR Transformation)
PwC
Ottawa, ON
- Full-time
Lead a variety of HR engagements covering topics that include but not limited to HR Strategy, Payroll Strategy & Transformation, Organization Design, Function Effectiveness and Design, HR…
Added 54 mins ago
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Regional Operations Manager, Cleaning Services
BGIS
MB · MB, Canada
- Part-time
Always demonstrate the values of the company and lead by example
Added 1 hour ago
ZC
Engineering Lead
Zaya Care
Toronto, ON
- Full-time
As the Engineering Lead at Zaya, you will own the company’s codebase and technical infrastructure. You’ll be accountable for the architecture, quality, reliability, and long-term…
Added 1 hour ago
Project Manager
The Canada Life Assurance Company
Toronto, ON
Collaborates with security, risk, and compliance teams for required assessments and artefacts and manages all technical project risks, ensuring compliance with established cyber and risk…
Added 1 hour ago
Sr Project Manager
The Canada Life Assurance Company
Winnipeg, MB · London, ON · Toronto, ON
Lead cross-functional teams through ambiguity and drives organizational change.
Added 1 hour ago
Solution Architect III, Platform, FSI, Google Cloud
Google
Toronto, ON
…application modernization, data management, data analytics, cloud AI, networking, nigrations,…
Added 1 hour ago
Platform Solution Architect III, Google Cloud
Google
Calgary, AB · Vancouver, BC
The Google Cloud Platform team helps customers transform and build what's next for their business - all with technology built in the cloud. Our products are developed for security,…
Added 1 hour ago
Q
Senior GRC Analyst
Quantexa
Remote, Canada
- $116,000 to $146,000 CAD / year
- Full-time
- Remote
This is a governance focused security role requiring a solid understanding of technical security, cloud environments and modern software development, combined with practical experience…
Added 1 hour ago
N
Solutions Architect
NULogic
Canada
- Contract
We are seeking an experienced Oracle Retail Solution Architect / Functional & Technical Lead with strong expertise in MFCS (Merchandising Foundation Cloud Service), IMCS (Invoice Matching…
Added 2 hours ago
A
Tech Lead and JAVA Developer
Alithya
QC · QC, Canada
- Full-time
En tant que Tech Lead et développeur ou développeuse JAVA, vous collaborerez avec des spécialistes tout au long du processus de modernisation du code. Votre contribution permettra…
Added 3 hours ago
Field Sales Representative, Enterprise Greenfield, Google Cloud
Google
Toronto, ON
The Google Cloud Platform team helps customers transform and build what's next for their business - all with technology built in the cloud. Our products are developed for security,…
Added 3 hours ago
K
Consultant, Cybersecurity
KPMG
Calgary, AB
- Full-time
Experience in defining and/or implementing security controls across multiple layers of the technology architecture including on-prem and cloud-based environments, including operating…
Added 3 hours ago
M
Dynamics 365 CRM Solution Engineer
Microsoft
Calgary, AB · Edmonton, AB · Vancouver, BC · Ottawa, ON · Toronto, ON
- Full-time
…enabling them to unlock new opportunities, enhance productivity, and deliver exceptional employee and customer experiences. By integrating advanced AI capabilities across devices, cloud…
Added 4 hours ago
NB
LEAD PYTHON DEVELOPER – IT TREASURY PLATFORMS
National Bank of Canada
Montreal, QC
- Full-time
Advanced knowledge of software architecture, cloud-native design, application programming interfaces, integration patterns, scalability, resiliency, observability, and security.
Added 4 hours ago
Salesforce Technical Architect - Financial Services Cloud, Marketing Cloud & Data360 - Manager
EY
Toronto, ON · Montreal, QC
Translate functional requirements into solution designs across FSC, Marketing Cloud, Data 360, integrations, security, and reporting.
Added 4 hours ago
B
Tech Lead - Infrastructure Services N 4C
BrightClaim
AB
- Full-time
At Genpact, we don’t just adapt to change, we lead it. AI and digital innovation are transforming the way businesses work, and we’re at the forefront of it. Genpact’s AI Gigafactory, our…
Added 6 hours ago
RB
Senior Software Developer, Workday Integrations & Extend
Royal Bank of Canada
Toronto, ON
- Full-time
As a Senior Software Developer, Workday Integrations & Extend, you will lead the technical design, development, and implementation of Workday solutions to meet complex HCM program…

McKesson

Sr. Network Security Specialist

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 professional experience in network engineering, including experience with network architecture, security design, or enterprise infrastructure strategy.
Posting language: English
Posted: Oct 30, 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 Specialist to design and advance secure, resilient, and scalable network infrastructure across enterprise, hybrid-cloud, and on-premises environments. In this senior individual-contributor role, you will shape network security architecture, establish technical standards, and reduce attack surfaces through Zero Trust, segmentation, and secure access strategies.

You will partner with Security, Enterprise Architecture, Infrastructure, and business stakeholders to translate operational and regulatory needs into practical security designs. You will also evaluate emerging technologies, lead architecture reviews, strengthen network visibility, and help ensure critical connectivity services remain secure, available, and positioned for business growth.

What You’ll Do

Design secure network architectures for hybrid-cloud and on-premises environments using Zero Trust, network segmentation, micro-segmentation, and secure-by-design principles.

Lead network security architecture reviews, risk assessments, design validation, and the development of reusable security patterns and standards.

Architect and optimize firewall and perimeter security capabilities, including Palo Alto Networks, Zscaler, HPE Aruba EdgeConnect, secure internet gateways, and web proxy solutions.

Design secure workforce and device access solutions using Zero Trust Network Access, VPN technologies, Network Access Control, and identity-aware security controls.

Strengthen threat detection through network traffic analysis, IDS/IPS technologies, security monitoring, telemetry, and security analytics.

Evaluate technologies, proofs of concept, and vendor solutions to inform network security roadmaps and investment decisions.

Partner with Security, Enterprise Architecture, Infrastructure, and operations teams to improve resilience, regulatory alignment, and business continuity.

Provide technical leadership during complex incidents, conduct root cause analysis, and implement sustainable corrective actions and automation.

Basic Requirements

7+ years of professional experience in network engineering, including experience with network architecture, security design, or enterprise infrastructure strategy.

Demonstrated experience designing and implementing secure enterprise networks across hybrid-cloud and on-premises environments.

Hands-on experience with enterprise firewall technologies, including policy design, configuration, administration, and optimization.

Experience applying Zero Trust, network segmentation, micro-segmentation, or secure network design principles.

Experience with routing, switching, and network protocols such as TCP/IP, BGP, OSPF, MPLS, or SD-WAN.
Experience producing architecture diagrams, design standards, technical documentation, or security review findings.

Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field, or an equivalent combination of education and relevant experience.

Preferred Skills/Experience

Experience with Palo Alto Networks, Zscaler, and HPE Aruba EdgeConnect.
Experience with network traffic analysis, IDS/IPS, security analytics, and incident investigation.
Experience with secure access technologies such as ZTNA, VPN, NAC, secure internet gateways, or web proxies.

Knowledge of regulatory, compliance, or security-control frameworks in a regulated enterprise environment.

Experience with cloud networking and cloud security architecture.

Automation or orchestration experience using Ansible, Python, APIs, or infrastructure-as-code practices.

Experience conducting vendor assessments, proofs of concept, capacity planning, and technology roadmap development.

Relevant certifications such as PCNSE, CISSP, CCNP Security, CCIE Security, or vendor-specific cloud or security credentials.

Ability to explain complex security risks and architecture decisions clearly to technical and nontechnical stakeholders.

Travel, Work Environment, and Physical Requirements

Work location, in-office expectations, and travel requirements will be defined based on the approved position and team needs. The role primarily involves computer-based architecture, documentation, collaboration, and technical analysis. Any position-specific physical requirements or accommodations should be included in the final approved posting.

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

Design and advance secure, resilient, and scalable network infrastructure across enterprise, hybrid-cloud, and on-premises environments. Lead network security architecture reviews, risk assessments, and the development of reusable security standards.

Requirements

Requires 7+ years of professional experience in network engineering, security design, or enterprise infrastructure strategy. Candidates must have a bachelor's degree in a related field or an equivalent combination of education and experience.

Skills

Network security architecture
Zero Trust
Network segmentation
Firewall administration
Palo Alto Networks
Zscaler
HPE Aruba EdgeConnect
Hybrid-cloud security
Network protocols
Threat detection
IDS/IPS
Security analytics
Identity-aware security
Risk assessment
Technical leadership

Benefits

Annual bonus
Long-term incentive opportunities

Visa sponsorship

Not detected in the job text

Keywords

Network Security
Zero Trust
Hybrid-cloud
Segmentation
Micro-segmentation
Palo Alto Networks
Zscaler
HPE Aruba EdgeConnect
VPN
ZTNA
NAC
IDS/IPS
TCP/IP
BGP
OSPF
MPLS
SD-WAN
Ansible
Python
Infrastructure-as-code
PCNSE
CISSP
CCNP Security
CCIE Security
Network Engineering
Security Architecture
Risk Assessment
Regulatory Compliance
Business Continuity
Automation

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