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Site Reliability Lead Engineer

Mastercard

Dublin, Ireland permanent

Posted: April 13, 2026

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Quick Summary

Lead Site Reliability Engineer is responsible for ensuring the reliability and scalability of our digital infrastructure.

Job Description

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 Lead Engineer

Lead Site Reliability Engineer

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.

Technology at Mastercard
What we create today will define tomorrow. Revolutionary technologies that reshape the digital
economy to be more connected and inclusive than ever before. Safer, faster, more sustainable.
And we need the best people to do it. Technologists who are energized by the challenges of a truly
global network. With the talent and vision to create the critical systems and products that power
global commerce and connect people everywhere to the vital goods and services they need every day.

Working at Mastercard means being part of a unique culture. Inclusive and diverse, a rich collaboration
of ideas and perspectives. A place that celebrates your strengths, values your experiences, and offers
you the flexibility to shape a career across disciplines and continents. And the opportunity to work
alongside experts and leaders at every level of the business, improving what exists, and inventing
what’s next.

About the Role
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.

All about you We are seeking a highly motivated and experienced Sr./Lead/Principal Site Reliability Engineer (SRE)
to join our growing 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.
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.

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.

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