Sr. Network Systems Engineer, Firewall

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 tomorrows 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 McKessons 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 Youll 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.

• Bachelors 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 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 McKessons 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

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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 McKessons 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) or (Canada) . Resumes or CVs submitted to this email box will not be accepted.

Join us at McKesson!

Required Experience:

Senior IC