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 Overview We are seeking a highly capable Senior Software Engineer with a strong foundation in software development to join our engineering organisation. This role goes beyond traditional testing and requires a candidate who actively contributes to software design, development, and quality engineering practices. The ideal candidate will demonstrate a development-first mindset, with hands-on experience in building scalable backend systems and the ability to design and implement robust automation solutions across the application stack. The individual will play a key role in embedding quality into the development lifecycle, driving engineering best practices, and ensuring systems meet functional, non-functional, performance, and security requirements. Key Responsibilities Contribute to software development and quality engineering, ensuring high standards of code quality and system reliability Design and implement scalable, maintainable test automation frameworks across API and UI layers Collaborate with engineering teams to ensure testability, performance, and security are incorporated into system design Participate in software design and architecture discussions, providing input from a quality and reliability perspective Develop and execute unit, functional, integration, and end-to-end tests Drive shift-left testing practices across the development lifecycle Enhance and maintain CI/CD pipelines, ensuring automated test execution and release validation Perform and contribute to code reviews, ensuring adherence to engineering standards and best practices Support performance engineering efforts, including analysis, tuning, and scalability validation Ensure adherence to secure coding practices and identify potential vulnerabilities Contribute to operability engineering, including observability, monitoring, and system reliability Troubleshoot and resolve complex issues across systems, ensuring minimal disruption and high system availability Continuously identify opportunities to improve engineering and quality processes Required Skills & Experience Software Development (Mandatory) Strong hands-on experience in Java development Experience building backend systems using Spring Boot Solid understanding of: Object-oriented programming Data structures and algorithms Software design principles Proven experience contributing to production-grade Java applications Ability to contribute across development and automation testing responsibilities Test Engineering & Automation Experience in: API Testing (Postman or equivalent) API Automation using RestAssured (Java) UI Automation using Selenium WebDriver or Playwright Strong understanding of: Unit, functional, and integration testing (JUnit/TestNG) RESTful services, JSON, XML Ability to design and implement: Integration, acceptance, and end-to-end automation tests Software Design & Architecture Ability to contribute to software design and architecture decisions Understanding of building systems that are: Scalable Maintainable Secure Performant Awareness of architectural patterns and best practices Performance, Security & Reliability Experience in performance engineering concepts, including system analysis and optimisation Knowledge of secure coding practices and vulnerability prevention Understanding of reliability engineering and operability principles Engineering Practices & Tooling Strong experience with: Version control systems (Git) CI/CD tools (Jenkins, Bamboo or equivalent) Code quality and coverage tools (Sonar or equivalent) Experience working in Agile development environments Strong collaboration skills with cross-functional teams Core Engineering Capabilities Strong troubleshooting and debugging skills across distributed systems Ability to work independently in moderately complex to complex scenarios Consistently applies engineering skills with growing autonomy and reliability Ability to contribute to team-level engineering improvements and mentoring Preferred / Good to Have Full-stack development exposure (Frontend + Backend) Experience with UI frameworks such as: Angular React Exposure to cloud-based applications and distributed systems Experience with in-memory data grids (e.g., Pivotal GemFire) Strong SQL knowledge (preferably Oracle DB) Exposure to monitoring and observability tools Key Expectations from the Role Must have a strong development background and not be limited to traditional testing roles Should be flexible to work across: Software development Automation testing UI validation Expected to drive a quality-first engineering culture Ability to influence system design, architecture, and delivery practices Acts as a key contributor in complex problem-solving scenarios and supports broader engineering goals **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.