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
Our Purpose:
We work 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 (DQ) drives our culture and everything we do inside and outside our company. We cultivate a culture of inclusion for all employees that respects their individual strengths, perspectives, and experiences. We believe that our differences enable us to be a better team, make better decisions, drive innovation, and deliver stronger business results.
Overview:
Mastercard's Network & Digital Payments group creates valued experiences for consumers and enables merchants and issuers to reach consumers in ways not possible in the pre-digital world.
The Global Product Engineering team is responsible for developing a suite of foundational payment solutions. This is an opportunity to be part of a highly motivated team focused on bringing security, convenience, and control to digital payments.
Ask Yourself• Have you ever engineered a product to market on a global scale?• Are you motivated to help drive a world beyond cash?• Are you eager to work at the cutting edge of technology while maintaining a high standard of engineering excellence?
Role Overview:
As a Senior Software Engineer, you will:
Core Engineering Responsibilities• Design, develop, and maintain robust and scalable backend services using Java, Spring Boot, and microservices architecture.• Deploy and manage applications on PCF and/or Kubernetes.• Develop engaging and responsive user interfaces using modern front-end frameworks such as Angular or React.• Participate in Proof of Concepts (PoCs) and contribute to the evaluation and selection of technologies, vendor solutions, frameworks, and methodologies.• Write clean, maintainable, well-documented, and testable code.• Collaborate with product managers, designers, and engineers to deliver high-quality products.• Participate in code reviews and continuously improve engineering practices.• Troubleshoot and resolve complex technical issues.• Ensure adequate test coverage across unit, integration, system, automation, and performance testing.• Contribute to architecture and technical design decisions.• Mentor junior engineers and share technical expertise.• Work in an Agile environment, participating in sprint planning, daily stand-ups, reviews, and retrospectives.
Quality Engineering & Automation• Develop robust automation solutions using Java, Spring, JUnit, Rest Assured, JBehave, Cucumber, or similar frameworks.• Design and maintain automation frameworks, reusable utilities, harnesses, and engineering productivity tools.• Create and maintain technical artifacts including:
o Design documents
o Test strategies
o Automation plans
o Integration specifications
o Operational readiness documentation• Identify gaps across unit, functional, integration, regression, performance, and exploratory testing and partner with engineering teams to address them.• Participate in defect triage, release readiness reviews, environment validation, and delivery risk assessments.
Security, Reliability & Operations
• Apply secure coding practices and support vulnerability identification using tools such as SonarQube, Checkmarx, Fortify, or equivalent platforms.• Support production readiness through effective logging, monitoring, troubleshooting, incident analysis, root cause analysis (RCA), and issue resolution.• Help improve application reliability, observability, and operational excellence.
All About You:
Required Qualifications• 6 to 9 years of experience in Full Stack Software Development.• Strong proficiency in Java and Spring Boot.• Experience designing and developing microservices.• Experience with PCF, Kubernetes (K8s), Docker, or cloud-native platforms.• Strong understanding of front-end development principles with hands-on experience in Angular and/or React.• Proficiency in HTML, CSS, JavaScript, and jQuery.• Hands-on experience with Java, Spring, JUnit, Rest Assured, JBehave, Cucumber, or equivalent testing frameworks.• Strong experience validating APIs, microservices, web services, web applications, databases, and integration workflows.• Experience with relational databases such as Oracle and PostgreSQL, including writing optimized and efficient SQL queries.• Experience designing and developing RESTful APIs.• Understanding of information security concepts, including:
o X.509 certificates
o Public key cryptography
o JWT (JSON Web Tokens)
o Hashing algorithms
o Digital signatures• Ability to troubleshoot complex issues across application, integration, data, and infrastructure layers.• Strong passion for engineering excellence, continuous improvement, automation, and building reliable software at scale.• Ability to work effectively both independently and within a collaborative team environment.
Good to Have:• Experience with public cloud platforms such as Azure, AWS, or GCP.• Experience with DevOps practices and tools including Jenkins, Docker, Kubernetes, CI/CD pipelines, and Infrastructure as Code.• Contributions to open-source projects.• Experience in payment technologies, digital identity, authentication, or security-focused solutions.
Our Teams & Values:• We work in small, collaborative teams consisting of software engineers and product managers.• Customer success is at the core of everything we do.• We embrace diversity and inclusion, bringing together individuals from varied backgrounds and experiences.• We believe in doing well by doing good through inclusive growth and ethical, environmentally responsible decision-making.
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.