McKesson

Sr. Network Systems Engineer, Firewall

McKesson • $99K — $132K *
Mississauga, ON L4T 0A1In-Person
Information Technology
5 - 7 years of experience
Today
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Job Overview by Ladders

Qualifications

  • 7+ years of experience in network security or related technical roles.
  • Bachelor's degree or equivalent education/experience.
  • Hands-on experience with enterprise network security architecture design.
  • Proficiency in managing Palo Alto firewall platforms.
  • Familiarity with Zero Trust Architecture and segmentation strategies.
  • Experience with VPN, ZTNA, and NAC technologies.
  • Knowledge of IDS/IPS and network traffic monitoring.

Responsibilities

  • Lead design and implementation of secure network architectures based on Zero Trust principles.
  • Develop and maintain network segmentation strategies to enhance security.
  • Conduct security architecture reviews and provide modernization recommendations.
  • Manage and optimize Palo Alto firewalls and network security policies.
  • Support Zscaler and Secure Internet Gateway technologies across enterprise environments.
  • Design solutions for secure remote access including ZTNA and VPN.
  • Monitor and analyze network traffic using security analytics tools.

Benefits

  • Hybrid or remote work options available.
  • Limited travel for collaboration and project work may be required.
  • Opportunity to work in a healthcare-focused environment.
  • Collaboration with cross-functional teams in cloud and infrastructure engineering.
Full Job Description
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.

About McKesson

McKesson Corporation provides medicines, pharmaceutical supplies, information and care management products and services across the healthcare industry. The Company operates in two segments. The McKesson Distribution Solutions segment delivers ethical drugs, medical-surgical supplies and equipment and health and beauty care products throughout North America. This segment also provides specialty pharmaceutical solutions for biotech and pharmaceutical manufacturers, sells financial, operational and clinical solutions for pharmacies (retail, hospital, long-term care) and provides consulting, outsourcing and other services. The McKesson Technology Solutions segment delivers enterprise-wide clinical, patient care, financial, supply chain, strategic management and software solutions. In July 2011, the Company acquired Portico Systems from Safeguard Scientifics, Inc. On March 25, 2012, it acquired the independent banner and franchise businesses of Katz Group Canada Inc. McKesson Distribution Solutions delivers pharmaceuticals to retail pharmacies and institutional providers like hospitals and health systems. They operate pharmaceutical distribution centers across the country, serving customers in all 50 states. They also deliver a comprehensive offering of health care products, technology, equipment and related services to the alternate site market, including physician offices, surgery centers, long-term care facilities and home care businesses across the country. McKesson is currently the largest pharmaceutical distributor in North America. McKesson also operates McKesson Canada and has an equity holding in Nadro, a leading distributor in Mexico.

McKesson Careers

Join McKesson, a leading global healthcare company, and be part of a team that is redefining the future of healthcare. With a variety of job opportunities available, McKesson is the perfect place to advance your career, whether you're a seasoned professional or just starting out. Work You’ll Do At McKesson, we are committed to improving care in every setting—one product, one partner, one patient at a time. We’re seeking talented professionals to join our team and contribute to a culture of innovation, diversity, and leadership. Our employees are driven by a deep sense of purpose and a desire for continuous growth and improvement. Empower Your Future in Healthcare With positions ranging from internships to leadership roles, McKesson offers unparalleled employment opportunities to develop your skills and advance your career. Our commitment to diversity training ensures that all team members have the opportunity to thrive. Join a team where your skills will be honed, your professional growth will be supported, and where you can genuinely see the difference you make in the lives of patients around the world. Innovative Work Environment McKesson is at the forefront of healthcare innovation. Our team is constantly exploring new ways to improve patient outcomes and streamline care processes. This commitment to innovation is what sets us apart and what makes McKesson an exciting place to work. Career Development and Benefits McKesson believes in nurturing the potential of its employees through robust career development programs and comprehensive benefits designed to support your life and well-being. From leadership training to health and wellness benefits, we ensure our team members are equipped to meet their professional and personal goals. Explore Job Opportunities Whether you’re looking for an internship to kickstart your career, or a senior position to utilize your extensive experience, McKesson offers a range of opportunities. Explore our open positions and find where you can make a difference at McKesson. Stay Connected Join Our Team Search for open positions that match your skills and interests. We are looking for passionate, curious, and solution-driven team players who are ready to take the next step in their careers. Keep Up to Date Stay ahead with career tips, insider perspectives, and industry-leading insights you can put to use today—all from the people who work here. Networking and Professional Growth At McKesson, networking and professional growth are part of our everyday environment. We encourage our employees to connect, share, and learn from each other to foster personal and professional development. Job Alert Emails Personalize your subscription to receive job alerts, latest news, and insider tips tailored to your preferences. Discover the exciting and rewarding career opportunities that await you at McKesson. Join McKesson today and be part of a team that is dedicated to shaping the future of healthcare.
Learn more about McKesson
Size
58,000 employees
Market Cap
$53.7 billion
Industry
Pharmaceuticals & Biotech
Net Income
-$4.1 billion
Founded
1833
5 Year Trend
+5.9%
Revenue
$237.6 billion
NASDAQ
MCK
* Ladders Estimates

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