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 EngineerRole Overview:We are looking for a Senior Software Engineer who thrives in building highly scalable, resilient, and cloud-native distributed systems.
The ideal candidate combines deep expertise in Java and modern backend technologies with a strong understanding of event-driven architectures, cloud platforms, containerisation, and emerging AI-driven software development practices. The role requires both strong technical execution and the ability to influence engineering excellence across the team.
What You'll Do
- Design, develop, test, and support enterprise-grade microservices using Java and Spring Boot.
- Build highly scalable and resilient APIs and backend services.
- Design and implement event-driven solutions using Kafka.
- Develop cloud-native applications deployed on PCF and containerised environments.
- Contribute to architecture discussions and technical design reviews.
- Drive software quality through automated testing, code reviews, and engineering best practices.
- Collaborate with cross-functional teams to deliver secure and reliable payment solutions.
- Leverage AI-assisted development tools and agentic coding practices to improve productivity, code quality, testing, and documentation.
- Diagnose and resolve complex production issues with a focus on reliability and operational excellence.
Required Skills
Core Engineering
- Strong proficiency in Java (8+ years preferred).
- Expert knowledge of:
o Spring Framework
o RESTful Services
o JPA/Hibernate
o Multithreading and Concurrent Programming
• Strong understanding of Object-Oriented Design and Design Patterns.
Event-Driven Systems
- Hands-on experience with Kafka.
- Experience building asynchronous and event-driven architectures.
- Understanding of reliability patterns such as:
o Retry Mechanisms
o Idempotency
o Dead Letter Queues
Cloud & Platform Engineering
- Experience with PCF (Pivotal Cloud Foundry).
- Strong Docker expertise.
- Experience developing cloud-native applications.
- Familiarity with container orchestration platforms such as Kubernetes/OpenShift.
- Understanding of CI/CD and DevOps practices.
- Strong SQL skills.
- Experience with Oracle, PostgreSQL, or similar relational databases.
- Understanding of performance tuning and query optimisation.
- Test-driven development practices.
- Unit, Integration, and API Testing.
- Secure coding practices.
- API security using OAuth2, OIDC, and JWT.
• Hands-on use of:
o GitHub Copilot
o AI-assisted code generation
o AI-driven testing and debugging
o Agentic software development workflows
• Ability to effectively leverage AI tools while maintaining engineering quality and security standards.
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Preferred Qualifications
- Experience in Payments, Financial Services, or FinTech.
- Experience with high-volume, transaction-processing systems.
- Knowledge of event sourcing, CQRS, or domain-driven design.
- Experience with Splunk, Dynatrace, or observability platforms.
- Experience mentoring junior engineers.
- Demonstrated use of GenAI tools to improve engineering productivity and delivery outcomes.Corporate Security Responsibility
- 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.