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Added 7 mins ago
DT
Assistant Manager I
Dollar Tree Stores
Edmonton, AB
- Part-time
We’re seeking an Assistant Store Manager to join our team to help with store operations, customer service and team development. Duties include, but are not limited to, the following:
Added 22 mins ago
Administrative Assistant (18 months maternity leave coverage)
Mott MacDonald
Vancouver, BC
Mott MacDonald is seeking an experienced temporary Administrative Assistant for maternity leave coverage to provide dedicated day-to-day administrative support to the Canada Unit General…
Added 52 mins ago
MC
Full-time Assistant Shift Lead (CA87 389 Queen)
Miniso Canada
Toronto, ON
- Full-time
We are looking for a Full-time Assistant Shift Lead to join us in our 389 Queen location.
Added 52 mins ago
OL
Legal Assistant- 12 month Contrac
OKT Law
Toronto, ON
- Contract
OKT is seeking a Legal Assistant to join our Toronto.
Added 1 hour ago
FH
Fairmont Gold Assistant Manager Full-time
Fairmont Hotels & Resorts
Victoria, BC
- Full-time
…experience. By fostering an engaged team of service professionals as Assistant Manager, Fairmont Gold, you will bring our exceptional “Fairmont Gold standards” to life in our Fairmont Gold…
Added 1 hour ago
JI
Executive Assistant
J.D. Irving, Limited
Dartmouth, NS
- Full-time
…fast-paced environment? We are seeking an experienced Executive Assistant to support the Vice President, Supply Chain & Quality, the Vice President, Planning and the Vice President,…
Added 1 hour ago
SM
Unit Assistant, Emergency
Stevenson Memorial Hospital
Alliston, ON
- Internship
The Unit Assistant ensures clear concise communication and facilitates the flow of information with other facilities, the health care team, visitors, family members and patients. As part of…
Added 1 hour ago
EC
Administrative Assistant, Office of the AVP Research + Dean of Graduate Studies
Emily Carr University of Art and Design
Vancouver, BC
- Temporary
The Administrative Assistant provides front-line and back-end administrative support to the Office of the Associate Vice-President, Research + Dean of Graduate Studies (AVP-R + D-GS) and…
Added 1 hour ago
BB
Office Administrative Assistant - Law Firm
Bleay Both Uppal LLP
Vancouver, BC
- Full-time
As we continue to grow, we are looking for a bright Administrative Assistant to support our law firm's daily operations in downtown Vancouver. This is an exciting opportunity for someone…
Added 2 hours ago
SN
WINHEC Events Assistant
Six Nations Polytechnic
Brantford, ON
- Contract
The Events Assistant is a new, temporary position designed to support the large-scale WINHEC AGM event being hosted at SNP during July 2027. The Event Assistant is responsible for the…
Added 2 hours ago
BU
Marker-Grader MBAB 5P06 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MACC 5P41 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MBAB 5P36 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MACC 5P21 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MPAC 5P30 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MACC 5P71 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MACC 5P88 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MBAB 5P34 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MPAC 5P09 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
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Marker-Grader MPAC 5P02 Winter 2027
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St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
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Marker-Grader MPAC 5P38 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
BU
Marker-Grader MPAC 5P31 Winter 2027
Brock University
St. Catharines, ON · Main Campus (Employees)
- Part-time
…assigned; whether it is due to substantive content, or to written communications, including spelling, punctuation, grammar, and overall structure and organization of the…
Added 2 hours ago
CO
Administrative Assistant 4 - Street Crime Unit (up to two year term)
City of Saint John
Saint John, NB
- Full-time
Added 2 hours ago
CC
Corporate Legal Assistant
Confidential Company
Toronto, ON
- Full-time
We are seeking a detail-oriented and highly organized Legal Assistant to join a professional corporate environment. This position provides an opportunity to support a broad range of…
Added 2 hours ago
R|
Executive Assistant
RI-MUHC | Research Institute of the MUHC | #rimuhc
Montreal, QC
- Full-time
…day-to-day administration, including meeting coordination, communications, documentation management, operational follow-up, and occasional support for reports, presentations, events, and…

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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