Software Engineer, Mastercard
Test and Develop
Global payments technology company
Open for applications
Global payments technology company
1001+ employees
Open for applications
1001+ employees
Company mission
To connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible.
Role
Who you are
- Full stack tester with strong programming skills with the ability to write secure, maintainable code (Java, SQL, or similar)
- Handson experience with Spring Boot, microservices, and distributed system patterns
- Deep understanding of automated testing across levels:
- Unit testing (JUnit, Mockito)
- Service/API testing
- Integration and functional testing
- Regression and mutation testing
- Ability to design test plans, test cases, and test data for functional and nonfunctional requirements
- Familiarity with design patterns (factory, adapter, singleton, observer, strategy, IoC)
- Experience testing different application types: APIs, eventdriven services, batch jobs, web apps, bigdata pipelines
- Strong problemsolving and debugging skills
- Ability to manage multiple tasks and deliver within business timelines
- Passion for quality, automation, and continuous improvement
- Strong communication and collaboration skills
Desirable
- Experience with CI/CD tools (Jenkins, GitHub Actions), monitoring tools (Splunk, Dynatrace), and performance testing (JMeter)
- Exposure to cloud platforms (AWS, Azure, GCP), Docker, Kubernetes
- Experience with Redis, Kafka, or other distributed data technologies
- Knowledge of secure coding standards (OWASP, CWE, SEI CERT)
- Familiarity with code quality and security scanning tools (Sonar, Checkmarx, Black Duck, Zally
What the job involves
- The Decision Management Program (DMP) delivers intelligent, realtime decisioning products using streaming analytics, business rules engines, AI models, and largescale distributed systems
- These capabilities help prevent fraud and enable trusted transactions across the Mastercard network
- We are seeking an SDET (Software Engineer II) with 4+ years of hands on engineering and automation experience to join the Decision Operations team in Dublin
- This role blends strong software engineering skills with deep quality engineering expertise to ensure our decisioning systems are reliable, scalable, and secure
- Own endtoend quality for application components, including test design, automation, execution, and reporting
- Develop highquality, secure, and testable code for backend services, REST APIs, and supporting components
- Build and maintain automated test suites (unit, integration, functional, regression, mutation testing)
- Contribute to CI/CD pipelines by integrating automated tests and quality gates
- Participate in Agile ceremonies and collaborate closely with developers, architects, and product teams
- Troubleshoot production issues, perform rootcause analysis, and implement corrective/preventive actions
- Conduct code reviews, refactor test and application code, and contribute to technical documentation
- Advocate for best practices in testability, automation, secure coding, and continuous improvement
- Support engineering guilds and knowledgesharing initiatives
- 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
Application process
- End Date: October 10, 2026
Our take
Mastercard is in the global payments business, and operates the world's fastest payments processing network. Its products and solutions have become central to everyday commerce across the world, in activities ranging from shopping and travelling to running businesses.
As the economy has become more and more digitised, Mastercard has been a leading player in helping businesses and individuals across the globe embrace card payments and digital banking. One of the world's largest companies, its revenue has seen consistent gain in the last 20 years.
The challenge for modern payments companies is that payments are always changing, as seen in the astronomical rise of contactless payments over the last decade. Mastercard's acquisition of blockchain systems, and an overall focus on leveraging its technology towards a digital economy, has placed the company in good stead to keep up to date with current trends, like cryptocurrency, in the digitised payments world.
Steph
Company Specialist at Welcome to the Jungle
Insights
21% employee growth in 12 months
Company
Company benefits
- Gym membership
- Share purchase options
- Extra holiday purchase optional
- Work from home opportunities
- Health insurance
Company HQ
Purchase, Harrison, NY
Leadership
Michael Miebach
(CEO)Has served in a variety of roles at the company, including President and CPO. Currently Board Member at IBM, Accion, the World Resources Institute, the US-India Strategic Partnership Forum, and the Metropolitan Opera. They are also a Trustee of USCIB.
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