Lead, Site Reliability Engineer (Infrastructure operations)
Mastercard5 days ago
Dublin, IrelandSenior / Staff+
Responsibilities
- Lead assessments of application infrastructure health, performance, monitoring, alerting, capacity, scalability, and resilience.
- Develop observability strategies, close monitoring and alerting gaps, integrate telemetry into unified views, and build dashboards for root-cause analysis.
- Lead incident reviews, coordinate cross-functional troubleshooting, identify recurring failure patterns, and drive remediation and long-term corrective actions.
- Use automation and AI technologies to improve proactive issue detection and enable self-healing capabilities.
- Develop testing and validation plans for environment builds, disaster recovery exercises, and post-maintenance readiness.
- Evaluate vendor hardware, firmware, and software upgrade roadmaps and conduct proof-of-concept testing.
- Lead training and knowledge-sharing initiatives across networking and infrastructure disciplines.
- Partner with Product and Development teams on growth forecasting, architecture, SLIs, SLOs, and reliability throughout the service lifecycle.
Requirements
- 5–10 years of experience in an SRE or related operations role, including 3+ years supporting e-commerce, financial services, or large-scale SaaS platforms.
- Strong infrastructure troubleshooting, analytical problem-solving, incident management, and root-cause analysis skills.
- Hands-on experience with observability and monitoring tools such as Splunk, Dynatrace, Prometheus, Grafana, ELK/EFK, and OpenTelemetry.
- Familiarity with network telemetry tools such as SolarWinds and NetScout.
- Proficiency in packet-level debugging using tcpdump and Wireshark.
- Broad understanding of infrastructure supporting payment platforms, including platform services, networking, databases, and storage.
- Experience with Chef, Ansible, Terraform, JSON, and YAML for automation and infrastructure as code.
- Ability to coordinate cross-functional troubleshooting, lead RCA processes, and drive corrective actions to completion.
- Experience partnering with development teams to shape architecture, define SLIs/SLOs, and embed reliability into services.
- Strong communication skills and a structured approach to complex production issues.
Benefits
- The role supports critical payment systems operating 24/7 year-round and includes periodic on-call responsibilities when required.
- The position offers cross-disciplinary collaboration, training, and knowledge-sharing across networking and infrastructure teams.
Tech Stack
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).