Network Security (WAF) Engineer

McKesson Corporation; Ireland; On-site; EUR 52,500 - 87,500; Full time

Benefits offered by this job

Comprehensive benefits package

Support for physical and mental well-being

Job summary

McKesson Corporation is seeking a Network Security Engineer in Ireland to protect its technology environment by designing and optimizing security controls across platforms.

The ideal candidate will have 4+ years in network security, focusing on web application firewalls, and will contribute to incident response and risk reduction efforts. A Bachelor's degree in a relevant field is preferred.

Join a company that values employee well-being through comprehensive benefits and a supportive environment.

Qualifications

• 4+ years of experience implementing network security technologies.
• Strong understanding of TCP/IP, DNS, HTTP/HTTPS.
• Experience with web application firewall solutions.

Responsibilities

• Design and maintain WAF protections for applications.
• Analyze network traffic and security events.
• Document security architectures and promote best practices.

Skills

Network Security Technologies

Firewall Configuration

Web Application Firewalls

TCP/IP Networking

Incident Response

Technical Documentation

Education

Bachelor's degree in a related field

Job description

Network Security Engineer (WAF) - P3

About the Role (Job Summary)

As a Network Security Engineer (Web Application Firewall), you will play a key role in protecting McKesson's global technology environment by designing, implementing, and optimising security controls across cloud and on-premises platforms. You will work closely with infrastructure, application, and cybersecurity teams to secure internet-facing applications, strengthen network security controls, and reduce organisational risk. This role combines hands‑on engineering with security consulting, helping teams integrate security into technology solutions while maintaining application availability and performance. You will also contribute to incident response, risk reduction initiatives, and the continuous improvement of McKesson's cybersecurity capabilities.

What You'll Do (Responsibilities)

• Design, implement, and maintain Web Application Firewall (WAF) protections for internet-facing applications, including custom security policies, rate limiting, geo‑blocking, and threat detection rules.
• Develop and manage network security controls, including firewall policies, network segmentation, ingress and egress controls, and secure access configurations.
• Partner with application, infrastructure, and engineering teams to understand application architectures, traffic flows, and business requirements, ensuring security controls are both effective and operationally sustainable.
• Analyse network traffic, security events, and application behaviour to identify risks, investigate security concerns, and improve detection capabilities.
• Evaluate, implement, and optimise security technologies and controls to enhance protection against vulnerabilities, emerging threats, and unauthorised access.
• Support incident response, forensic investigations, vulnerability remediation activities, and disaster recovery planning by providing technical security expertise.
• Document security architectures, configurations, procedures, and standards while promoting security best practices across technology teams.

Basic Requirements

• 4+ years of experience implementing and supporting enterprise network security technologies, including firewalls, web application firewalls, or intrusion prevention systems.
• Experience configuring and managing Web Application Firewall (WAF) solutions to protect internet-facing applications and APIs.
• Experience designing, implementing, and maintaining firewall rules, network segmentation controls, and access management policies in enterprise environments.
• Strong understanding of TCP/IP networking, application traffic flows, DNS, HTTP/HTTPS, and network security architecture principles.
• Experience analysing network traffic, security logs, and security events to support investigations, threat detection, and incident response activities.
• Experience assessing security risks, validating security control effectiveness, and identifying opportunities to improve security posture.
• Strong documentation skills with experience creating technical documentation, security standards, procedures, and configuration records.

Preferred Skills/Experience

• Minimum Education & Typical Experience or Equivalent Combination: Bachelor's degree or equivalent combination of education and experience, with 4+ years of experience in cybersecurity engineering, network security, infrastructure security, or a related technical field.
• Experience securing cloud-based environments and applications within AWS, Azure, or other enterprise cloud platforms.
• Knowledge of Operational Technology (OT) security, supply chain security, or AI security risks and associated controls.
• Experience mentoring team members and contributing to technical leadership, security best practices, and continuous improvement initiatives.

Benefits

At McKesson, we care about the well-being of the patients and communities we serve, and that starts with caring for our people. That's why we have a Total Rewards package that includes comprehensive benefits to support physical, mental, and financial well‑being. Our Total Rewards offerings serve the different needs of our diverse employee population and ensure they are the healthiest versions of themselves.

Our Base Pay Range for this position

€52,500 - €87,500