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 Overview: Mastercard’s Commercial Customer Experience team is seeking a Senior Software Engineer to help design, develop, and deliver scalable, secure, and high-performing software solutions that power critical customer experiences and business capabilities. This is a hands-on full-stack engineering role with a strong focus on backend development using Java and Spring Boot, while also contributing to modern web applications built with Angular. The ideal candidate will have experience building enterprise-scale applications, microservices, REST APIs, and event-driven systems using streaming technologies such as Apache Kafka. You will play a key role in developing cloud-native solutions, driving engineering excellence, and delivering resilient, customer-focused products in a collaborative Agile environment. You will work from Mastercard's technology hub in a collaborative, Agile environment alongside talented engineers, product managers, technical program managers, and test engineers. This is a hybrid role based in Arlington, VA, requiring three days per week onsite. Role: • Design, develop, and evolve secure, scalable Java/Spring Boot microservices and APIs. • Build and maintain full-stack applications, contributing to both Angular-based user interfaces and Java/Spring Boot backend services. • Design and implement event-driven architectures using Apache Kafka or similar streaming and messaging technologies. • Translate business and product requirements into reliable, maintainable technical solutions, contributing to system architecture and technical design. • Build and integrate services across Angular applications, databases, internal platforms, and third-party systems, including efficient SQL and database solutions for high-volume workloads. • Apply AI-assisted development tools to accelerate coding, testing, debugging, documentation, code reviews, and software quality improvements with appropriate human oversight. • Develop solutions that meet Mastercard standards for security, performance, scalability, reliability, and operational excellence, applying enterprise security patterns such as authentication, authorization, encryption, and secrets management. • Apply 12-factor application principles, cloud-native practices, and Mastercard engineering governance throughout the development lifecycle. • Participate in code reviews, pull requests, retrospectives, and technical discussions, contributing to high-quality engineering practices and continuous improvement. • Collaborate with Software Engineers, Test Engineers, Product Managers, Technical Program Managers, and other stakeholders to deliver customer-focused solutions. • Troubleshoot complex production and performance issues, improve system reliability, and mentor engineers by sharing technical knowledge and best practices. All About You: • Proven experience developing enterprise-scale software applications as a Software Engineer, Senior Software Engineer, or Full-Stack Engineer. • Extensive experience developing enterprise applications using Core Java, Spring Framework, Spring Boot, RESTful APIs, and microservices. • Strong full-stack development experience, including modern UI development with Angular and backend development with Java and Spring technologies. • Hands-on experience with Apache Kafka or equivalent messaging and event-streaming technologies. • Strong understanding of microservice architecture, distributed systems, API design, event-driven systems, and cloud-native development practices. • Strong understanding of cloud architecture principles, including scalability, resiliency, reliability, and high availability. • Broad understanding of software engineering concepts and methodologies, including object-oriented design, design patterns, data structures, algorithms, and system design. • Experience using AI-assisted development tools to improve productivity and software quality across coding, refactoring, testing, debugging, documentation, and delivery. • Strong SQL and database development skills with technologies such as PostgreSQL or Oracle, including experience designing and optimizing solutions for high-volume transactional systems. • • Experience diagnosing and improving application performance, scalability, reliability, and resiliency in production environments. • Understanding of software engineering best practices including automated testing, CI/CD, Git-based development, code reviews, observability, and operational readiness. • Ability to translate complex product and business requirements into secure, testable, maintainable, and supportable technical solutions. • Demonstrated ability to operate effectively in an Agile engineering environment, contributing to continuous improvement and collaborative technical decision-making. • Ability to work independently, manage competing priorities, and make thoughtful technical decisions with minimal supervision. • Strong communication and collaboration skills, with the ability to explain technical concepts and influence decisions across technical and non-technical audiences. • Bachelor's degree in Computer Science, Engineering, Information Systems, or equivalent practical experience. Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We