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Site Reliability Engineer II

Job in O'Fallon, St. Charles County, Missouri, 63368, USA
Listing for: Mastercard
Full Time position
Listed on 2026-07-01
Job specializations:
  • IT/Tech
    Cloud Computing: Infrastructure & Operations, Systems Engineer, IT Support, SRE/Site Reliability
Job Description & How to Apply Below
Our Purpose

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.

Title and Summary

Site Reliability Engineer II
Site Reliability Engineer II

Who is Mastercard?

At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits everyone, everywhere, by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships, and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company.

We cultivate a culture of inclusion for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team - one that makes better decisions, drives innovation, and delivers better business results.

About the Role

The Payment Network Business Operations team is seeking a highly motivated and experienced Site Reliability Engineer II (SRE) to join our team. You will play a critical role in ensuring the reliability, scalability, and performance of our applications, supporting essential services that power Mastercard's global operations. As a thought leader in your field, you will bring technical expertise, a passion for automation, and the ability to mentor.

The role of the Business Operations Site Reliability Engineer is to be the production readiness steward for Mastercard products. As Business Operations SRE, we are responsible for ensuring that our platform is stable and healthy. We break down barriers to running 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 principles that include operational design, automation, capacity planning, and 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 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.

As part of the Business Operations team, you will:

Work independently on elements of projects/processes within the Site Reliability Engineering area by applying intermediate/practical knowledge and area best practices to meet organizational standards of quality and excellence.

Support the implementation and maintenance of high-availability systems to ensure operational stability.

Assist in evaluating operational needs and developing technical solutions under guidance.

Contribute to automation and scripting projects to streamline routine operational tasks.

Troubleshoot and resolve basic to moderate system issues, escalating more complex problems as needed.

Document operational procedures and shares knowledge with team members.

Participate in quality checks and reviews to ensure system stability and reliability.

Utilize experience and a comprehensive understanding of area processes and tools to make minor adjustments or enhancements to resolve identifiable issues. May manage smaller project/initiatives as an experienced individual contributor with specialized knowledge within the Site Reliability Engineering area.

Role qualifications:

The ideal candidate will apply the following skills independently in routine and moderately complex situations, requiring occasional guidance typically only in unfamiliar or highly complex scenarios. They will demonstrate growing consistency and reliability in applying the skills.

Observability - Ability to use scripting and tooling to implement observability solutions, enabling the collection, analysis, and visualization of metrics, logs, and traces to support incident detection, diagnosis,…
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