Lead Site Reliability Engineer Mastercard O'Fallon, Missouri, US

Artha Nexgen; O’Fallon (MO); On-site; USD 140,000 - 210,000; Full time

Job summary

Mastercard seeks a Lead Site Reliability Engineer to drive reliability, scalability, and security for mission-critical financial services platforms. You will design and optimize cloud-native, highly available systems, implement SRE best practices, and lead incident response and postmortems.

You will partner with IT and Cybersecurity teams, automate deployments, observability, and resilience testing while mentoring engineers.

Qualifications

• Deep experience with cloud platforms and cloud-native architectures.
• Strong background in CI/CD and infrastructure-as-code.
• Experience securing large-scale, distributed systems in regulated environments.

Responsibilities

• Design and optimize cloud-native, highly available systems.
• Lead incident response and postmortems across platforms.
• Automate deployments, observability, and resilience testing.
• Mentor engineers and partner with IT and Cybersecurity teams.

Skills

Cloud

CI/CD

Infrastructure as Code

Security

Observability

Incident response

Postmortems

Mentoring

Job description

Mastercard is seeking a Lead Site Reliability Engineer to drive reliability, scalability, and security for mission-critical financial services platforms. You will design and optimize cloud-native, highly available systems, implement SRE best practices, and lead incident response and postmortems. Partnering with IT and Cybersecurity teams, you’ll automate deployments, observability, and resilience testing while mentoring engineers. Ideal candidates bring deep experience with cloud, CI/CD, infrastructure-as-code, and securing large-scale, distributed systems in a regulated environment.