NT Network Administrator

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. 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. Assis