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

# Job Description Summary

**Role:**

The Senior Software Development Engineer is a hands-on developer specializing in Java development, with a particular focus on producing scalable and reliable API services to support business-critical applications and solutions at Mastercard Open Finance.

## What You Will Do

• Excellent problem-solving skills
• Strong understanding of data structures & algorithms and their space & time complexities
• Excellent hands-on and practical working experience with Java
• Excellent coding skills – should be able to convert design into code fluently
• Strong technical aptitude and a good knowledge of CS fundamentals
• Write modular, extensible, readable, maintainable, and performant code
• Focus on code quality, writing unit test cases, and considerations towards choosing the right data structure
• Collaborate with teams by contributing to the shared vision and working closely with cross-functional stakeholders
• You will be responsible for the APIs you and/or your team build and will support them through to production
• Leverage **Generative AI and AI-assisted development tools** to improve software development productivity, code quality, testing, documentation, and problem-solving
• Effectively use **GitHub Copilot** for code generation, code completion, refactoring, debugging, unit test creation, documentation, and development assistance
• Apply **prompt engineering techniques** to effectively interact with AI coding assistants and obtain accurate, maintainable, and context-aware solutions
• Review, validate, and optimize AI-generated code to ensure it meets security, performance, scalability, maintainability, and coding standards
• Use AI-assisted development responsibly while maintaining appropriate developer ownership, code review, testing, and quality controls
• Stay current with emerging **AI/ML, Generative AI, LLM, and AI-powered software engineering practices** and identify opportunities to apply them to engineering workflows

## All About You

• Excellent communication skills
• Problem-solver and solution-seeking approach
• Hands-on experience building complex, highly scalable, and high-performing systems
• Solid understanding and hands-on experience in Java, J2EE, Spring, Spring Boot, and RESTful web services
• Understanding and experience integrating web services
• Exposure to Test Driven Development
• Experience using **GitHub Copilot or similar AI-powered coding assistants** in day-to-day software development
• Working knowledge of **Generative AI, Large Language Models (LLMs), prompt engineering, and AI-assisted software development**
• Ability to critically evaluate and validate AI-generated code rather than relying on AI output without appropriate testing and review
• Awareness of secure and responsible AI development practices
• Team player
• Agile Scrum experience

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.