Software Engineer II

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
Overview
The Decision Management Platform (DMP) Authentication Decisioning team delivers real-time authentication intelligence that helps protect consumers and businesses from fraud while improving the digital payment experience. The platform powers key Mastercard products including Identity Check, Smart Authentication, AAV Validation, and Token Provisioning Insights.
As a Software Engineer II, you will contribute to the development and operation of highly available, low-latency services that process authentication and decisioning requests at global scale. You will work closely with experienced engineers, architects, product managers, and SRE teams while expanding your technical expertise and ownership across the full software development lifecycle.
Role
As a Software Engineer II, you will:
Develop, test, deploy, and support software components used within Authentication Decisioning products.
Translate functional requirements into technical solutions that align with team standards and platform architecture.
Build enhancements to existing services while maintaining high standards of quality, security, performance, and resiliency.
Participate in the design and implementation of APIs and microservices supporting authentication and decisioning workflows.
Troubleshoot and resolve production issues by analysing logs, metrics, transaction flows, and service behaviour.
Contribute to automated testing, CI/CD pipelines, and deployment activities.
Support ongoing maintenance activities including upgrades, configuration changes, and platform improvements.
Work closely with senior engineers to learn architectural patterns, distributed systems concepts, and operational best practices.
Participate in Agile ceremonies including sprint planning, estimation, retrospectives, and demos.
Collaborate with cross-functional teams to deliver customer-focused solutions.
Contribute to documentation, design reviews, and knowledge-sharing activities.
Demonstrate Mastercard values through ownership, inclusion, urgency, and customer focus.
All About You
Technical Skills
You have:
Experience developing software using Java or similar object-oriented programming languages.
Understanding of software engineering fundamentals, data structures, algorithms, and object-oriented design principles.
Experience building REST APIs and backend services.
Familiarity with Spring Boot or comparable enterprise development frameworks.
Understanding of relational and/or NoSQL database technologies.
Experience working with source control systems such as Git.
Familiarity with automated testing practices and modern software development workflows.
Understanding of secure coding practices and application security fundamentals.
Interest in distributed systems, cloud-native technologies, and highly scalable applications.
Strong debugging and problem-solving skills.
Professional Skills
You:
Take ownership of assigned work and deliver high-quality solutions.
Demonstrate curiosity and a willingness to learn new technologies and business domains.
Communicate effectively with engineers, product managers, and stakeholders.
Collaborate well within cross-functional and geographically distributed teams.
Seek feedback and continuously improve your technical and professional skills.
Are comfortable working in a fast-paced Agile environment.
Contribute positively to team culture and engineering excellence initiatives.
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.