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? 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. Overview The Fraud Products team develops fraud prevention and identity verification solutions on Mastercard's Decision Management Platform. Our high-performance Java platform processes billions of transactions each month, delivering the scale, speed, and reliability that power Mastercard's global payments network. Role

• Design, develop, and support scalable, high-performance applications.
• Build secure, reliable, and maintainable solutions for complex business challenges.
• Participate in Agile development, design reviews, code reviews, and security reviews.
• Troubleshoot production issues and optimize applications for performance and reliability.
• Drive engineering best practices, automation, and continuous improvement.
• Collaborate with global teams to deliver software at scale.

All About You

• Strong experience with Java/J2EE, Spring Boot, and distributed systems.
• Experience building and supporting high-performance, highly available applications.
• Strong understanding of software design, architecture, data structures, secure coding, and testing practices.
• Experience troubleshooting production issues and improving system performance, scalability, and reliability.
• Experience with code reviews, operational excellence, and production support.
• Hands-on experience with Kubernetes, Cloud Foundry, Linux, Shell Scripting, Oracle/PLSQL, and SQL.
• Experience working in Agile development environments.
• Bachelor's degree in Computer Science or related field, or equivalent experience.

Required Technical Skills

• Core Java (including multithreading)
• Java/J2EE
• Spring Framework / Spring Boot
• Distributed Systems & Distributed Computing at Scale
• Kubernetes, Cloud Foundry
• Linux & Shell Scripting
• Oracle, PL/SQL, Advanced SQL
• Software Design & Architecture
• Secure Coding Practices
• Unit, Functional & Integration Testing
• Performance Engineering
• Code Reviews & Troubleshooting
• IntelliJ or JBoss Developer Studio

Desirable Skills •Experience with distributed computing platforms and in-memory data grid technologies at scale, such as: GemFire Apache Spark Distributed Redis Hazelcast GridGain / Apache Ignite

• MQ/JMS messaging technologies
• Solaris/UNIX or Red Hat Linux
• Experience integrating vendor and open-source solutions into enterprise platforms

Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact View email address on click.appcast.io and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly. 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. In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations. Pay Ranges O'Fallon, Missouri: $115,000 - $184,000 USD