Senior Software Engineer - Infrastructure Team

nd 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. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.

Overview
We are looking for a Senior Frontend Software Engineer to help design, build, and scale our internal web platforms and admin tools. This role centers on delivering high‑quality, performant frontend applications, while also contributing to the infrastructure and tooling that support reliable delivery and strong developer experience.
You'll collaborate closely with frontend, backend, and platform teams to shape frontend standards, improve workflows, and ensure our web applications are production‑ready, accessible, and maintainable.

Role

Design, build, and maintain scalable frontend applications using modern web technologies.
Own frontend architecture decisions, including component systems, application structure, and shared foundations.
Develop and maintain reusable UI components, design systems, and frontend tooling.
Work closely with backend and platform engineers to integrate APIs and align on system design.
Contribute to frontend infrastructure, including build pipelines, CI/CD processes, deployment workflows, and environment configuration.
Participate in improving observability, performance monitoring, and operational readiness of frontend applications.
Champion best practices around performance, accessibility, testing, and code quality.

All About You

Strong expertise in frontend development, with deep knowledge of JavaScript/TypeScript, React, and modern frontend tooling.
Experience building scalable, maintainable web applications and consuming APIs.
Familiarity with frontend infrastructure concepts such as CI/CD pipelines, cloud environments, build systems, and production considerations.
Quality‑driven mindset with a focus on testing, accessibility, performance, and clean code.
Comfortable collaborating across disciplines and taking ownership of complex technical challenges.

Education
BS Degree or equivalent combination of experience and formal education.

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.