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Job Summary 

The Network Systems Engineer is responsible for the administration, support, maintenance, and continuous improvement of enterprise network and security infrastructure within a highly regulated environment. This role serves as an experienced technical contributor supporting production network operations, security controls, compliance requirements, and infrastructure reliability. 

The position requires strong hands-on expertise with Palo Alto and Cisco firewall technologies, along with experience supporting enterprise networking, load balancing, cloud connectivity, and operational infrastructure services. The engineer will work closely with Systems Administration, Senior Systems Engineering, Senior Network Engineering, Cybersecurity, and Governance, Risk, and Compliance (GRC) teams to ensure the availability, security, and compliance of critical infrastructure supporting regulated business operations. 

The ideal candidate is an experienced network professional who can independently support complex production environments, maintain accurate technical documentation, contribute to security and compliance activities, and help protect sensitive information including PII and PHI. 

Key Responsibilities 

Network Security Administration 

• Administer and support Palo Alto Networks firewall platforms. 

• Administer and support Cisco firewall technologies. 

• Implement approved firewall rules, VPN configurations, NAT policies, and network segmentation requirements. 

• Assist with vulnerability remediation and security hardening activities. 

• Participate in security incident investigation and resolution efforts. 

• Support implementation of security controls and approved security baselines. 

Network Infrastructure Operations 

• Support Cisco switching and routing environments. 

• Troubleshoot and resolve network connectivity and performance issues. 

• Support network infrastructure upgrades and lifecycle management activities. 

• Participate in change management processes and maintenance activities. 

• Perform root cause analysis on network service incidents. 

Load Balancing and Application Delivery 

• Support F5 load balancing technologies. 

• Maintain virtual servers, traffic management policies, SSL configurations, and application delivery services. 

• Partner with application support teams to maintain highly available services. 

Operational Infrastructure Support 

• Apply patches, firmware updates, hotfixes, and security updates. 

• Perform user administration and access management activities. 

• Execute operational maintenance procedures and validation activities. 

• Support disaster recovery and business continuity testing activities. 

• Maintain operational runbooks and support procedures. 

Compliance and Regulatory Support 

• Support infrastructure operating within a federal, healthcare, or otherwise highly regulated environment. 

• Participate in audit readiness, evidence collection, and remediation activities. 

• Assist with maintenance of technical controls aligned to regulatory and security requirements. 

• Support protection of sensitive information including PII and PHI. 

• Follow established configuration management and change control processes. 

Monitoring and Observability 

• Utilize monitoring and observability platforms to identify service and infrastructure issues. 

• Review network health, capacity, availability, and performance metrics. 

• Support operational reporting and dashboard development. 

• Participate in continuous service improvement initiatives. 

Documentation and Collaboration 

• Develop and maintain network diagrams, technical procedures, standards documentation, and operational guides. 

• Maintain accurate and audit-ready documentation. 

• Collaborate with Systems Administration, Senior Systems Engineering, Senior Network Engineering, Cybersecurity, and GRC teams. 

• Participate in incident, change, and problem management processes. 

Minimum Requirements 

Education 

Bachelor's degree in Computer Science, Information Technology, Cybersecurity, Engineering, or related field, or equivalent experience. 

Experience 

• Typically requires 4+ years of relevant network engineering, network administration, or network security experience. 

• Experience administering Palo Alto firewalls. 

• Experience administering Cisco firewalls. 

• Experience supporting Cisco switching environments. 

• Experience supporting enterprise production infrastructure. 

• Experience working in regulated or compliance-driven environments. 

• Experience performing operational maintenance activities including patching, upgrades, and user administration. 

Technical Knowledge 

• TCP/IP networking 

• Routing and switching 

• VPN technologies 

• Network security principles 

• DNS and related network services 

• High availability concepts 

• Load balancing concepts 

• Cloud networking fundamentals 

• Monitoring and observability concepts 

Preferred Qualifications 

• Experience supporting federal, healthcare, or other highly regulated environments. 

• Familiarity with NIST SP 800-53 security controls. 

• Familiarity with DISA STIG security configuration standards. 

• Familiarity with HIPAA compliance requirements. 

• Experience protecting regulated information including PII and PHI. 

• Experience supporting audit and compliance activities. 

• Experience with Azure, AWS, or hybrid cloud networking environments. 

• Experience with automation technologies such as PowerShell, Python, or Ansible. 

• Familiarity with vulnerability management processes and security remediation activities. 

Preferred Certifications 

Network 

• CCNA 

• CCNP 

Security 

• Security+ 

• Palo Alto PCNSA 

• Palo Alto PCNSE 

• CISSP 

Cloud 

• Azure AZ-104 

• Azure AZ-700 

• AWS Certified Advanced Networking 

Service Management 

• ITIL Foundation 

Critical Success Factors 

• Strong troubleshooting and analytical abilities. 

• Exceptional written and verbal communication skills. 

• Outstanding documentation and organizational skills. 

• Ability to independently manage operational responsibilities with limited supervision. 

• Strong attention to detail in compliance-sensitive environments. 

• Collaborative mindset and ability to work effectively across infrastructure, engineering, cybersecurity, and compliance teams. 

• Commitment to operational excellence, security, and regulatory compliance. 

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

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

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