# Lead Site Reliability Engineer

**Company**: Mastercard
**Location**: Dublin
**Experience**: senior
**Job type**: full-time
**Category**: Engineering
**Industry**: Finance

**Apply**: https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/Dublin-Ireland/Lead-Site-Reliability-Engineer_R-291845-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_4dcb4e48-532

## Description

We are seeking a Lead Site Reliability Engineer (SRE) with deep expertise in HP NonStop (Tandem) platforms and strong Payments Network / Transaction Switching knowledge.

The successful candidate will be responsible for end-to-end service reliability, owning availability, incident response, automation, release readiness, and operational excellence for real-time, globally distributed payment systems processing transactions at massive scale.

**Key Responsibilities**

- Service Reliability & Availability: Own availability, performance, latency, and resilience of payment platforms running on HP NonStop (Tandem) infrastructure. Define and enforce SLOs, SLIs, and error budgets for mission-critical payment services.

- Incident Leadership & Response: Act as a lead incident commander for high-severity production incidents. Drive rapid triage, mitigation, and resolution across application, platform, and infrastructure layers.

- Platform Engineering & Automation: Reduce toil by driving automation across monitoring, diagnostics, deployment, and recovery workflows on HP NonStop platforms.

- Release, Change & Resilience Engineering: Lead release readiness and production validation for changes impacting payment switching platforms.

- Payments Domain Ownership: Ensure deep operational understanding of payments transaction flows.

- Leadership & Mentorship: Provide technical leadership and mentoring to SREs and operations engineers.

**Required Skills & Experience**

- Technical Expertise: Strong, hands-on experience with HP NonStop (Tandem) platforms. Deep knowledge of NonStop OS, Pathway, TMF, EMS, OSS, TACL, and diagnostic tooling.

- Payments & Domain Knowledge: Solid experience in payments networks or financial transaction processing.

- SRE & Operational Skills: Strong incident management and problem-solving skills.

**Preferred Qualifications**

- Prior Lead or Senior SRE / Production Engineering experience.

- Exposure to platform automation, monitoring, or observability tooling.

- Experience working with globally distributed teams and systems.

## Skills

### Required
- HP NonStop
- Payments Network
- Transaction Switching
- Site Reliability Engineering
- Incident Management
- Automation
- Monitoring
- Diagnostics

### Nice to have
- Platform Automation
- Observability Tooling
- Globally Distributed Teams

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Source: [Apply at mastercard.wd1.myworkdayjobs.com](https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/Dublin-Ireland/Lead-Site-Reliability-Engineer_R-291845-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)