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

Role Summary
We are seeking a skilled Software Engineer with strong foundations across software design, testing, performance engineering, and operability. The role focuses on building scalable, secure, and high-quality applications while ensuring reliability and performance across the software lifecycle.

Key Responsibilities

Software Design & Development

Translate business and technical requirements into scalable, maintainable, and secure designs
Develop and maintain high-quality software solutions using modern engineering practices

Architecture Support

Contribute to system architecture discussions, ensuring alignment with scalability, performance, and security standards
Apply established architectural patterns and design principles

Quality Engineering

Design and execute unit, functional, and integration tests
Ensure high test coverage and reliability across services and applications
Drive defect prevention through early testing practices

Performance Engineering

Analyze and optimize application performance under varying workloads
Conduct performance testing, tuning, and monitoring to meet SLAs

Secure Coding & Compliance

Follow secure coding practices to prevent vulnerabilities
Ensure adherence to enterprise security standards and guidelines

Code Quality & Reviews

Participate in peer code reviews to ensure maintainability, readability, and adherence to standards
Continuously improve code quality practices

Operability & Reliability

Design systems with observability, monitoring, and operational readiness in mind
Ensure systems are maintainable and supportable in production

Problem Solving & Troubleshooting

Diagnose and resolve issues across systems and applications
Minimize downtime through effective analysis and resolution

Required Skills & Qualifications

Solid understanding of:

Software Design & Development principles
Data Structures and efficient data handling
Testing strategies: Unit, Functional, and Integration
Performance engineering and optimization techniques
Secure coding practices

Hands-on experience in:

Code reviews and quality improvement practices
Troubleshooting distributed systems and applications
Building reliable and operable software systems

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.