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McKesson

Supplies medicines and technology to healthcare teams

Public Key Infrastructure Operations Engineer

Security Engineering & ArchitectureConfirmed live in the last 24 hours
Full-timeCork, IrelandHybrid

About the Job

Requirements

  • Three to five years of hands-on experience with public key infrastructure technologies and certificate management.
  • Strong understanding of X.509 certificates, certificate authorities, and trust hierarchies.
  • Proficiency with PKI platforms such as Microsoft Active Directory Certificate Services, DigiCert, and GlobalSign.
  • Experience with certificate enrollment protocols such as SCEP, CMPv2, and ACME.
  • Familiarity with hardware security modules and their operational management.
  • Understanding of certificate revocation mechanisms such as CRL and OCSP.
  • Basic scripting skills in PowerShell, Python, or Bash for automation tasks.
  • Experience with monitoring and logging tools such as Splunk, Logic Monitor, and Grafana.
  • Demonstrated experience in IT operations or security operations environments.
  • Experience working in shift-based or on-call rotation models.
  • Experience with IT service management tools such as ServiceNow, Remedy, and Jira Service Management.

Responsibilities

  • Execute certificate issuance, renewal, revocation, and key recovery operations according to established procedures.
  • Manage certificate lifecycle activities, including monitoring expiration dates and coordinating renewals.
  • Perform routine health checks and monitor PKI infrastructure components.
  • Respond to and resolve PKI-related incidents within defined SLA timeframes.
  • Troubleshoot certificate validation failures, trust chain issues, and enrollment problems.
  • Investigate and resolve alerts from PKI monitoring systems.
  • Coordinate with application teams to resolve certificate-related service disruptions.
  • Document incident root causes and implement preventive measures.
  • Participate in a rotating on-call schedule to provide 24/7 support coverage.
  • Work assigned shifts to ensure continuous operational support.
  • Respond to critical incidents during off-hours with appropriate urgency.
  • Ensure PKI operations comply with internal policies, certificate practice statements, and industry standards.
  • Maintain accurate operational documentation, runbooks, and standard operating procedures.
  • Support internal and external audit activities related to PKI operations.
  • Track and report operational metrics and KPIs.

About the Company

McKesson

Supplies medicines and technology to healthcare teams

McKesson distributes medicines and medical supplies to pharmacies, hospitals and other care providers, alongside services that connect drug manufacturers with patients. Its specialty businesses support community cancer care and clinical research, extending its work beyond moving products through warehouses. The company buys drugs and supplies from manufacturers for resale, while its software helps pharmacies manage inventory and healthcare teams secure insurance approval for prescriptions. It also sells practice management and patient support services to clinicians and drugmakers. McKesson traces its business roots to 1833 and is headquartered in Irving, Texas.

Company size
10,001+
Company stage
IPO
Headquarters
Irving, TX
Founded
1833

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