Lead Site Reliability Engineer
Mastercard1 day ago
Dublin, IrelandStaff+
Responsibilities
- Own availability, performance, latency, resilience, and operational reliability for payment platforms running on HP NonStop infrastructure.
- Define and enforce SLOs, SLIs, and error budgets for mission-critical payment services.
- Lead high-severity incident response, triage, mitigation, resolution, and blameless post-incident reviews.
- Drive automation across monitoring, diagnostics, deployment, and recovery workflows.
- Improve operability, observability, failure handling, release readiness, rollback, failover, and recovery strategies.
- Lead disaster recovery testing, business continuity exercises, and site-resilience planning for payment networks.
- Maintain operational expertise in real-time transaction switching, debit, ATM, POS, and network routing behavior.
- Provide technical leadership and mentoring to SREs and operations engineers and set standards for runbooks, monitoring, alert hygiene, and operational excellence.
- Partner with engineering, infrastructure, security, product, and other teams to reduce operational risk and embed reliability into system design.
Requirements
- Hands-on experience with HP NonStop (Tandem) platforms and deep knowledge of NonStop OS, Pathway, TMF, EMS, OSS, TACL, and diagnostic tooling.
- Experience supporting high-throughput, low-latency, real-time transaction systems and owning production reliability in 24x7 environments.
- Experience with payment networks or financial transaction processing, including transaction switching, routing, authorization, and settlement flows.
- Familiarity with PCI-regulated, high-availability production systems.
- Strong incident management, problem-solving, cross-functional leadership, and communication skills.
- Prior Lead or Senior SRE or Production Engineering experience is preferred.
- Exposure to platform automation, monitoring, or observability tooling is preferred.
- Experience working with globally distributed teams and systems is preferred.
- An ITIL- or reliability-engineering-aligned operational mindset is preferred.
Tech Stack
TensorFlow
Categories
Site Reliability
About Mastercard
Mastercard builds and operates a global payments network used by banks, merchants, fintechs, and governments, offering card processing, real-time payments, tokenization, and fraud/risk services. It generates revenue from transaction processing and assessment/service fees across more than 200 countries and territories. Founded in 1966 and headquartered in Purchase, New York, Mastercard is a public company listed on the NYSE (ticker: MA).