Senior Site Reliability Engineer - Payments Network

Mastercard; Dunboyne; On-site; EUR 120,000 - 160,000; Full time

Job summary

Mastercard is seeking a Lead Site Reliability Engineer (Infrastructure operations) to own the reliability of critical payments infrastructure. You will lead, monitor, and improve health, performance, and resiliency across core services, partnering with Product and Development teams to forecast capacity and ensure seamless customer experiences.

You will apply your expertise in observability, incident RCA, and automation to reduce MTTD/MTTM and drive improvements across networking, storage, and

Qualifications

• 5-10 years of experience in an SRE or SRE related operations role, including 3+ years supporting large-scale platforms.
• Excellent infrastructure troubleshooting and analytical problem solving skills.
• Strong hands-on experience with observability and monitoring tools such as Splunk, Dynatrace, or equivalent.
• Familiarity with network telemetry tools such as SolarWinds and NetScout.
• Proficiency in packet level debugging with tcpdump and Wireshark.
• Broad understanding of end-to-end infrastructure supporting payment platforms.
• Experience with automation and Infrastructure as Code tools such as Chef, Ansible, and Terraform.

Responsibilities

• Lead continuous assessments of the application infrastructure, focusing on health, performance, monitoring, alerting, and capacity analysis.
• Collaborate with Product and Development teams to forecast growth and ensure scalability and resiliency.
• Champion observability as a core principle and design dashboards for RCA and root-cause analysis.
• Lead incident reviews and drive remediation strategies for risks and failures.
• Utilize automation/AI to enhance proactive issue detection and self-healing capabilities.
• Develop testing and validation plans for new environment builds and disaster recovery exercises.

Skills

SRE experience

Troubleshooting

Observability

Automation

IaC

Networking

RCA

Prometheus

Grafana

Splunk

Tools

Splunk

Dynatrace

SolarWinds

NetScout

tcpdump

Wireshark

Prometheus

Grafana

ELK/EFK

OpenTelemetry

Terraform

Ansible

Chef

Job description

Mastercard is seeking a Lead Site Reliability Engineer (Infrastructure operations) to own the reliability of critical payments infrastructure. You will lead, monitor, and improve health, performance, and resiliency across core services, partnering with Product and Development teams to forecast capacity and ensure seamless customer experiences.

You will apply your expertise in observability, incident RCA, and automation to reduce MTTD/MTTM and drive improvements across networking, storage, and