Jobs / Mastercard

Lead Site Reliability Engineer

Mastercard · Dublin, D, Ireland
Dublin, D, IrelandRemote
Remuneration
Not specified
Location
Dublin, D, Ireland
Visa sponsorship
Not specified

Job summary

Leads site reliability for mission-critical payment processing platforms on HP NonStop (Tandem), ensuring availability, resilience, and scalability for real-time transaction systems. The role owns SLOs, incident response, automation, release readiness, and disaster recovery planning for payment switching, while setting operational standards and mentoring engineers.

Qualifications

  • Hands-on experience with HP NonStop (Tandem) platforms.
  • Knowledge of NonStop OS, Pathway, TMF, EMS, OSS, TACL, and diagnostic tooling.
  • Experience supporting high-throughput, low-latency, real-time transaction systems.
  • Production reliability experience in 24/7 environments.
  • Experience with payment networks or financial transaction processing.
  • Understanding of transaction switching, routing, authorization, and settlement flows.
  • Familiarity with PCI-regulated, high-availability production systems.
  • Lead or Senior SRE or Production Engineering experience preferred.
  • Exposure to platform automation, monitoring, or observability tooling preferred.
  • Experience with globally distributed teams and systems preferred.
  • ITIL or reliability-engineering operational mindset preferred.

Responsibilities

  • Own availability, performance, latency, and resilience of payment platforms on HP NonStop.
  • Define and enforce SLOs, SLIs, and error budgets for payment services.
  • Lead response to high-severity production incidents and coordinate triage, mitigation, and resolution.
  • Conduct blameless post-incident reviews and track root-cause follow-up actions.
  • Automate monitoring, diagnostics, deployment, and recovery workflows.
  • Improve service operability, observability, and failure handling with engineering teams.
  • Lead release readiness and production validation for payment-switching changes.
  • Define rollback, failover, and recovery strategies; participate in disaster recovery and business continuity exercises.
  • Set operational standards for runbooks, monitoring, alerting, and reliability.
  • Mentor SREs and operations engineers and influence reliability strategy.

Work schedule

24/7 production environment

Industry

PaymentsFinancial transaction processing

Relocation

No