Our PurposeMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were 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 EngineerWho 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 (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 teamone that makes better decisions, drives innovation, and delivers better business results.OverviewAs part of the Mainframe Services team, you will contribute to the modernization and operational excellence of Mastercards core transaction processing systems. This role is critical to ensuring the reliability, scalability, and security of our mainframe infrastructure, which supports billions of transactions globally.RoleAs a Senior Software Engineer, You WillDesign, develop, and maintain COBOL, JCL, and DB2-based applications on z/OS.Collaborate with cross-functional teams to integrate mainframe services with distributed systems.Lead modernization efforts including migration to event-driven architectures and API enablement.Ensure compliance with Mastercards Mainframe Security Technical Standard3.Participate in daily CRQ syncs and operational reviews56.Mentor junior engineers and contribute to the SE Guilds leveling and performance standards7.All About YouYou have:5+ years of experience in mainframe development (COBOL, JCL, DB2).Strong understanding of z/OS architecture and batch processing.Experience with file transfer gateways, SFTP protocols, and integration layers8.Familiarity with Agile methodologies and CI/CD pipelines.Ability to work in a global team and communicate effectively across time zones.A passion for modernization and continuous improvement.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 Mastercards 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 Mastercards guidelines.