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Lead Site Reliability Engineer-2

Job in O'Fallon, St. Charles County, Missouri, 63366, USA
Listing for: Mastercard
Full Time, Part Time position
Listed on 2026-08-05
Job specializations:
  • IT/Tech
    Systems Engineer
Job Description & How to Apply Below

Lead Site Reliability Engineer

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

The Business Operations (Biz Ops) team is seeking a Business Operations Site Reliability Engineer (SRE). The role of Business Operations Organization is to be the production readiness steward for Mastercard products. As a Business Operations SRE, we are responsible for ensuring that our platform is stable and healthy. We break down barriers to run our products by fostering developer run ownership and empowering developers to build resilient products.

We support our developers during the application build phase in software run principals that includes operational design, automation, capacity planning, monitoring that leads to fault-tolerant, scalable products. We see the big picture and help create and enforce operations standards while facilitating an agile and learning culture.

We are seeking a highly motivated and experienced Lead Site Reliability Engineer (SRE) to join our growing team. You will play a critical role in ensuring the reliability, scalability, and performance of our Java, Spring Framework applications, supporting essential services that power Mastercard's global operations. As a leader thought leader in your field, you will bring technical expertise, a passion for automation, and the ability to mentor and guide less experienced junior engineers.

We support daily operations with a hyper focus on triage, root cause by understanding the business impact of our products and subsequently performing blameless post-mortems. The goal of every Business Operations team is to engage early in the development lifecycle to be more proactive and upfront in the development process, and to proactively manage production and change activities to maximize customer experience and increase the overall value of supported applications.

Business Operations teams also focus on risk management by tying all our activities together with an overarching responsibility for compliance and risk mitigation across all our environments. Ultimately, the role of Business Operations is to align Product and Customer Focused priorities with Operational needs by providing continuous feedback throughout the lifecycle.

Team Specific

Skills:

  • Operational Readiness Architect:
    Ensure application health, performance, and capacity; support pre-launch activities.
  • Site Reliability Engineering:
    Design resilient infrastructure, perform root cause analysis, and automate alerts.
  • Dev Ops/Automation:
    Improve service lifecycle, support CI/CD pipelines, and reduce manual intervention.
  • ITSM Practices:
    Analyze platform activities and provide feedback to development teams.

Role qualifications:

  • BS in Computer Science or related field.
  • Proficiency in Java, Spring Framework, Python, or Go.
  • Strong Dev Ops and configuration management skills.
  • Experience with distributed systems and automation.
  • Problem-solving, communication, and leadership abilities.
  • Passion for observability and continuous improvement.
  • Willingness to learn and collaborate across teams.

Corporate Security Responsibility:

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

  • Abide by Mastercard's security policies and practices;
  • Ensure the confidentiality and integrity of the information being accessed;
  • Report any suspected information security violation or breach, and
  • Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.

In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience.

Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire;

10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred…

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