Public Key Infrastructure (PKI) Operations Engineer

Mckesson Corporation; Cork; Remote; EUR 53,000 - 88,000; Full time

Benefits offered by this job

Shift allowance

Total Rewards package

Job summary

McKesson Ireland is seeking a Public Key Infrastructure Operations Engineer to join our Enterprise Digital Certificate Management team in Cork. You will own day-to-day PKI operations, handle certificate requests, renewals, revocations, and participate in on-call rotations to ensure 24/7 availability of our PKI services.

Qualified candidates have 3–5 years of hands-on PKI experience, familiarity with X.509 and PKI platforms (ADCS, DigiCert, GlobalSign), scripting for automation, and experience

Qualifications

• 3–5 years of hands-on PKI experience.
• Strong understanding of X.509 certificates and trust hierarchies.
• Proficiency with PKI platforms (Microsoft ADCS, DigiCert, GlobalSign).
• Experience with certificate enrollment protocols (SCEP, CMPv2, ACME).
• Familiarity with HSMs and their management.
• Basic scripting (PowerShell, Python or Bash) for automation.
• Experience with monitoring and logging tools (Splunk, Grafana).

Responsibilities

• Execute certificate issuance, renewal, revocation, and key recovery operations.
• Manage certificate lifecycle activities including expirations and renewals.
• Perform health checks and monitoring of PKI infrastructure.
• Respond to PKI incidents within SLA.
• Coordinate with application teams to resolve certificate-related disruptions.
• Document root causes and preventive measures.

Skills

PKI technologies

X.509 certificates

PKI platforms

Enrollment protocols

PowerShell

Scripting for automation

Monitoring tools

Tools

Splunk

Logic Monitor

Grafana

ServiceNow/Jira Service Management

Job description

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.

Position Summary (Purpose of job):

Public Key Infrastructure (PKI) Operations Engineer

We are seeking a skilled Public Key Infrastructure Operations Engineer to join our Enterprise Digital Certificate Management team. This role is critical to maintaining the security and reliability of our certificate lifecycle management systems.

You will be responsible for days to day PKI operations handling certificates requests, revocations, resolving incidents and participating in on-call rotations to ensure 24/7 availability of our PKI Services.

Key Responsibilities:

Operational Support & Request Fulfillment:

• Execute certificate issuance, renewal, revocations, and key recovery operations according establish procedures.
• Manage certificate lifecycle activities including monitoring expirations dates and coordinating renewals
• Perform routine health checks and monitoring of PKI infrastructure components

Incident Management & Problem Resolutions:

• Respond to and resolve PKI-related incidents within defined SLA timeframes
• Troubleshoot certificate validations failures trust chain issues, and enrollment problems
• Investigate and resolve alerts from PKI monitoring systems
• Coordinate with applications teams to resolve certificate-related service disruptions
• Document incident root cases and implement preventive measures

On-call & Shift Operations (Shift allowance applies)

• Participate in rotating on-call schedule to provide 24/7 support coverage
• Work assigned shifts to ensure continues operational support
• Respond to critical incidents during off-hours with appropriate urgency

Compliance & Documentation:

• Ensure PKI operations comply with internal policies, Certificate practices statements and industry standards
• Maintain accurate operational documentation, runbooks and standard operation procedures
• Support internal and external audit activities related to PKI operations
• Track and report on Operational metrics and KPIs

Technical Skills:

• 3 -5 years of hands-on experience with PKI technologies and certificate management
• Strong understanding of X.509 Certificates certificate authorities and trust hierarchies
• Proficiency with PKI platforms (Microsoft ADCS, DigiCert, GlobalSign..etc)
• Experience with certificate enrollment protocols (SCEP,CMPv2, ACME)
• Familiarity with HSMs and their operational management
• Understanding of certificate revocation mechanisms (CRL, OCSP)
• Basic scripting skills (PowerShell, Python or bash) for automation task
• Experience with monitoring and logging tools (Splunk, Logic Monitor, Grafana)

Professional Experience:

• Demonstrated experience in IT Operations or security operations environments
• Track record of working in shift-based or on-call rotations models
• Experience with ITSM tools (ServiceNow, Remedy, Jira Service Management, etc)
• Proven ability to handle multiple priorities and work under pressure

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.

As part of Total Rewards, we are proud to offer a competitive compensation package at McKesson. 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.

Our Base Pay Range for this position

€52,500 - €87,500