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Senior Site Reliability Engineer
Mastercard
O'Fallon, MissouriPosted Sep 29, 2026 · Yesterday$96k – $163k
Full-time$96k – $163kSeniorFintech
About this role
Mastercard is seeking a Senior Site Reliability Engineer to ensure the reliability, scalability, and performance of our global payment systems. You will be a thought leader, driving automation and mentoring teams to build resilient products. This role involves proactive engagement in the development lifecycle, focusing on operational design, capacity planning, and monitoring to maximize customer experience and mitigate risk.
What we are looking for
6- Ensure reliability, scalability, and performance of global payment systems
- Drive automation and scripting for operational workflows and incident response
- Mentor development teams on software run principles and operational design
- Proactively manage production and change activities
- Perform triage, root cause analysis, and blameless post-mortems
- Collaborate with development teams on reliability solutions
Skills mentioned
6PythonAWSAzureGCPLinuxCI/CD
