Our PurposeMastercard 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 SummarySenior Software Engineer - Infrastructure TeamSenior Frontend EngineerWho is Mastercard?Mastercard is a global technology company in the payments industry. Our mission is 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. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.OverviewWe 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.RoleDesign, 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 YouStrong 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.EducationBS Degree or equivalent combination of experience and formal education.Corporate Security ResponsibilityAll 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, andComplete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.