Senior Software Engineer

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 Senior Software Engineer Who is Mastercard? 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 respect 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 Senior Software Engineers at Mastercard design and code artificial intelligence, cloud, and machine learning platforms that provide mission-critical insights to many of the world’s leading organizations and governments. As a Senior Software Engineer, you will deliver these products and solutions with speed and agility as part of a small team. This will involve developing high-performing, highly scalable software solutions and products for some of the world’s top brands. Specific tasks vary depending on the project and the business unit that you join in.

As a Senior Software Engineer, you will: • Software Engineering & Development • Design, build, test, deploy, and maintain software components, automation frameworks, and validation tools • Apply strong knowledge of data structures, algorithms, and efficient coding practices in building scalable solutions • Contribute to end-to-end software development lifecycle, including design, development, testing, deployment, and monitoring Architecture & Design • Participate in defining software architecture and design patterns to ensure scalability, reliability, and maintainability • Ensure systems are designed for testability, observability, performance, and operational readiness • Provide input into microservices and cloud migration strategies Quality Engineering & Testing • Develop and implement test automation frameworks and CI/CD integration pipelines (e.g., Jenkins, XLR) • Design comprehensive test strategies and plans, including performance, reliability, and production simulation testing • Ensure high code quality and coverage using tools such as Sonar or Clover Security & Compliance • Apply and promote secure coding practices, including code analysis, vulnerability detection, and mitigation strategies • Integrate security testing into CI/CD pipelines Code Quality & Reviews • Conduct and lead code reviews, ensuring adherence to coding standards, security practices, and maintainability • Act as a technical reviewer for system designs, test strategies, and implementation approaches Operability & Performance • Ensure systems are observable, monitorable, and resilient across environments • Perform performance engineering, including load testing, tuning, and bottleneck analysis • Troubleshoot complex production issues and ensure rapid resolution Collaboration & Leadership • Partner with developers, architects, and product teams to drive engineering best practices • Mentor junior engineers and contribute to knowledge sharing across teams • Evaluate and recommend tools, technologies, and frameworks for continuous improvement All About You •