Lead Site Reliability Engineer

Position:
Lead Site Reliability Engineer

Company:
Mastercard

Location:
United States, O'Fallon

Employment type:
Full time

Short Summary:
The Mastercard Business Operations (BizOps) organization is seeking a Lead BizOps Engineer to serve as a technical authority and operational architect across critical platforms, focusing on reliability, scalability, and operational excellence.

Responsibilities:
- Act as a Lead-level technical authority for reliability, operability, and production readiness across multiple platforms or programs.
- Influence system architecture, design patterns, and platform standards to improve resiliency, scalability, and fault tolerance.
- Own and evolve availability, latency, performance, and reliability objectives for critical systems.
- Lead complex production events and cross-platform investigations, reducing MTTR through systemic fixes.
- Provide leadership for CI/CD strategy, ensuring pipelines support automated validation and safe deployments.
- Define and promote standards for monitoring, alerting, SLOs, and telemetry.
- Partner with security, risk, and compliance teams to embed controls and regulatory requirements into platform design.
- Mentor senior and junior engineers, raising the technical bar across the BizOps community.

Requirement:
- Bachelor’s degree in Computer Science, Engineering, or a related technical discipline, or equivalent practical experience.
- Deep expertise in distributed systems, reliability engineering, and production operations.
- Strong foundation in algorithms, data structures, system design, and automation.
- Proven ability to drive decisions and outcomes in high-pressure environments.
- Proficiency in one or more of: Python, Go, Bash.
- Extensive hands-on experience with DevOps and observability tooling.

Benefits:
- Competitive base salary ($122,000 - $207,000 USD).
- Insurance (medical, dental, vision, disability, life insurance).
- Paid leaves (16 weeks of new parent leave, up to 20 days of bereavement leave).
- 401k with a best-in-class company match.
- Tuition reimbursement and fitness reimbursement.
- 25 days of vacation time and 10 annual paid U.S. observed holidays.