Designs, develops, tests, deploys, and supports scalable Java and Ruby applications, REST APIs, microservices, and event-driven services on AWS. Responsibilities include production support, troubleshooting, CI/CD automation, monitoring, secure coding, code reviews, incident response, performance optimization, and collaboration with cross-functional engineering teams. The role also contributes to Agile practices, mentoring, and continuous improvement.
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
Java Software Engineer
Mastercard is a global technology company in the payments industry. Our mission is 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, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.
Overview:
Mastercard is seeking a highly motivated Software Engineer to join our engineering team. In this role, you will design, develop, test, deploy, and support highly scalable payment and technology solutions that power global commerce. You will work as part of an Agile engineering team, contributing to cloud-native platforms and services while maintaining Mastercard's high standards for security, reliability, and performance.
The ideal candidate combines strong software engineering fundamentals with hands-on experience in Java, Ruby, and AWS cloud technologies, and demonstrates a passion for continuous learning, automation, and operational excellence.
Key Responsibilities • Design, develop, test, and maintain applications and services supporting Mastercard products and platforms. • Own software delivery activities at the application and component level, including development, testing, deployment, and production support. • Build secure, scalable, and resilient cloud-native solutions using AWS services. • Develop and enhance RESTful APIs, microservices, and event-driven architectures. • Troubleshoot, analyze, and resolve complex technical issues across development, test, and production environments. • Participate in code reviews and promote engineering best practices, secure coding standards, and software craftsmanship. • Collaborate closely with Product Owners, Architects, SREs, QA Engineers, and other stakeholders to deliver business value. • Contribute to CI/CD pipelines and deployment automation using modern DevOps practices. • Implement monitoring, logging, and observability capabilities to ensure operational excellence. • Participate in on-call rotations and support incident response activities when required. • Continuously improve system performance, scalability, reliability, and maintainability. [ • Mentor junior engineers and actively contribute to a culture of learning and knowledge sharing.
Adopt new technologies, programming languages, and architecture patterns as required by business needs.
All about you • Bachelor's degree in Computer Science, Engineering, or related technical field, or equivalent practical experience. • Solid previous professional software development experience. • Strong hands-on experience with Java and modern Java frameworks such as Spring Boot. • Working knowledge of Ruby and experience building or maintaining Ruby-based applications or automation solutions. • Experience designing and developing distributed systems and microservices. • Experience with AWS cloud services such as: • EC2 • ECS/EKS • Lambda • S3 • RDS • DynamoDB • CloudWatch • IAM • API Gateway • SNS/SQS • Experience with CI/CD tools such as GitHub Actions, Jenkins, GitLab CI, or similar. • Solid understanding of software design patterns and object-oriented programming. • Experience with automated testing, code quality tools, and secure coding practices. • Strong problem-solving and analytical skills. • Excellent written and verbal communication skills in English.
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:
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
Java Software Engineer
Mastercard is a global technology company in the payments industry. Our mission is 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, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.
Overview:
Mastercard is seeking a highly motivated Software Engineer to join our engineering team. In this role, you will design, develop, test, deploy, and support highly scalable payment and technology solutions that power global commerce. You will work as part of an Agile engineering team, contributing to cloud-native platforms and services while maintaining Mastercard's high standards for security, reliability, and performance.
The ideal candidate combines strong software engineering fundamentals with hands-on experience in Java, Ruby, and AWS cloud technologies, and demonstrates a passion for continuous learning, automation, and operational excellence.
Key Responsibilities • Design, develop, test, and maintain applications and services supporting Mastercard products and platforms. • Own software delivery activities at the application and component level, including development, testing, deployment, and production support. • Build secure, scalable, and resilient cloud-native solutions using AWS services. • Develop and enhance RESTful APIs, microservices, and event-driven architectures. • Troubleshoot, analyze, and resolve complex technical issues across development, test, and production environments. • Participate in code reviews and promote engineering best practices, secure coding standards, and software craftsmanship. • Collaborate closely with Product Owners, Architects, SREs, QA Engineers, and other stakeholders to deliver business value. • Contribute to CI/CD pipelines and deployment automation using modern DevOps practices. • Implement monitoring, logging, and observability capabilities to ensure operational excellence. • Participate in on-call rotations and support incident response activities when required. • Continuously improve system performance, scalability, reliability, and maintainability. [ • Mentor junior engineers and actively contribute to a culture of learning and knowledge sharing.
Adopt new technologies, programming languages, and architecture patterns as required by business needs.
All about you • Bachelor's degree in Computer Science, Engineering, or related technical field, or equivalent practical experience. • Solid previous professional software development experience. • Strong hands-on experience with Java and modern Java frameworks such as Spring Boot. • Working knowledge of Ruby and experience building or maintaining Ruby-based applications or automation solutions. • Experience designing and developing distributed systems and microservices. • Experience with AWS cloud services such as: • EC2 • ECS/EKS • Lambda • S3 • RDS • DynamoDB • CloudWatch • IAM • API Gateway • SNS/SQS • Experience with CI/CD tools such as GitHub Actions, Jenkins, GitLab CI, or similar. • Solid understanding of software design patterns and object-oriented programming. • Experience with automated testing, code quality tools, and secure coding practices. • Strong problem-solving and analytical skills. • Excellent written and verbal communication skills in English.
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.
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What you need to know about the Belfast Tech Scene
If asked to name the birthplace of the RMS Titanic, you might not say Belfast. Similarly, if asked to name Europe's leading destination for foreign direct investment in new software development, Belfast might not come to mind. Yet, both are true. The city has emerged as a tech powerhouse, recently ranked among the best in the U.K. for tech careers — especially for software developers. It also leads the U.K. with the highest percentage of software development jobs advertised.
