More jobs:
Software Engineer II
Job in
O'Fallon, St. Charles County, Missouri, 63366, USA
Listed on 2026-09-02
Listing for:
Mastercard
Full Time
position Listed on 2026-09-02
Job specializations:
-
Software Development
Software Engineer, Java Developer, DevOps, Backend Developer
Job Description & How to Apply Below
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
Software Engineer II OverviewWho 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.
The Fraud Products team (part of O&T) is developing new capabilities for Master Card's Decision Management Platform, which serves as the core for multiple business solutions to combat fraud and validate cardholder identity. Our patented Java-based platform processes billions of transactions per month in tens of milliseconds using a multi-tiered, message-oriented approach for high performance and availability.
Master Card software engineering teams leverage Agile development principles, advanced development, design and test automation practices, and an obsession over security, reliability, and performance to deliver solutions that delight our customers. We're looking for talented Software Testing Engineers to design and develop regression and integration test automation for fraud applications using advanced technologies that are revolutionizing payments.
• Would you like to deliver industry leading solutions for fighting fraud?
• Are you motivated by speeding business solutions to market?
• Do you want to innovate, using cutting edge technologies on challenging business problems?
• Do you want to work for a company that offers above and beyond benefits including paid parental leave, flexible work hours, gift matching, and even volunteer incentives while encouraging your own professional learning and development?
• Do you thrive in a place where you are continuously learning more while growing your skills and career?
Mastercard software engineering teams leverage Agile development principles, advanced development practices, automation, and an obsession with security, reliability, scalability, and performance to deliver solutions that delight our customers.
Role
• Successfully deliver as part of a team on major projects and complex assignments with broad scope and long-term business implications.
• Design, develop, test, and maintain high-quality software solutions using Java and related technologies.
• Contribute to software design and system architecture discussions to build scalable, resilient, and high-performing applications.
• Build and enhance features, services, and APIs that support Mastercard's fraud prevention and payment processing platforms.
• Develop and maintain automated unit, functional, and integration tests as part of the software development lifecycle.
• Participate in code reviews to ensure software quality, maintainability, security, and adherence to engineering standards.
• Collaborate with software engineers, quality engineers, product teams, and platform teams to deliver solutions efficiently.
• Apply secure coding practices and engineering best practices throughout the development lifecycle.
• Contribute to performance engineering efforts by identifying bottlenecks and implementing scalable solutions.
• Design and build systems with strong operability, observability, monitoring, and reliability characteristics.
• Assist with production support by troubleshooting…
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