Senior Software Engineer (Java Backend Developer)

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 (Java Backend Developer)

Job Description Summary
Be part of the Operations & Technology – Fraud Products team, developing new capabilities for Mastercard’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 milliseconds, using a multi-tiered, message-oriented architecture designed for high performance and availability.
If you are excited about:
• Building industry-leading fraud prevention solutions
• Accelerating business solutions to market
• Innovating with cutting-edge technologies
• Solving complex, high-scale business problems
This role is for you.
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Key Responsibilities
• Deliver high-quality software solutions through hands-on development.
• Collaborate closely with technical leads on design and implementation.
• Provide production support by acting as a Subject Matter Expert (SME) to resolve incidents and problem tickets.
• Plan, design, and develop technical solutions aligned with Mastercard standards, processes, and best practices.
• Lead day-to-day system development and maintenance activities to meet Service Level Agreements (SLAs).
• Drive innovation, cost effectiveness, high quality, and faster time-to-market.
• Own the end-to-end Software Development Life Cycle (SDLC), including:
o Requirements and use cases
o Technical design and documentation
o Test strategy and test design
o Performance benchmarking
o Release, deployment, and rollback plans
o Feasibility studies, cost, time analysis, and estimations
• Participate in Proof of Concepts (PoCs) and support vendor and technology selection.
• Conduct brown bag sessions and provide technical training to team members.
• Mentor and guide team members across all SDLC phases.
• Continuously improve standards and process efficiency.
• Ensure adequate test coverage across:
o Unit Testing
o System/Integration Testing
o Performance Testing
• Perform quality inspections and walkthroughs including:
o Requirements Review
o Design Review
o Code Review
o Security Review
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All About You
Core Competencies
• High energy, detail-oriented, proactive, and able to work independently under pressure.
• Strong initiative and self-motivation to drive results.
• Excellent verbal and written communication skills.
• Strong collaboration and organizational skills.
• Ability to work in a matrix-based, geographically distributed Agile team.
• Good understanding of Agile software development methodologies.
• Experience designing and developing complex, multi-tier applications.
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Essential Technical Skills
• Development and debugging of J2EE RESTful Web Services and Web Applications
• Strong database experience (Oracle, SQL scripting)
• Spring Framework, including Spring Boot
• Maven for build and dependency management
• Unit testing using JUnit and Mockito
• Application servers: JBoss and/or Apache Tomcat
• Version control using Git
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Desirable Skills
• Experience with containerized environments (Kubernetes, OpenShift, Cloud Foundry)
• Integration frameworks such as Apache Camel or Spring Integration
• Experience with monitoring service performance
• Frontend exposure to Angular 2+ or modern SPA frameworks such as React + Redux
• Knowledge of HTML5, ES5/ES6, TypeScript, SASS, and CSS3

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.