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 Corporate Solutions organization is seeking a Senior Software Engineer with strong expertise in Java, Spring Boot, microservices, and AI-assisted software development to help build and evolve a global business-to-business (B2B) technology platform. Our platform helps businesses of all sizes streamline how they manage payments when buying and selling products and services. As part of the engineering team, you will design and develop secure, scalable services that support critical B2B payment experiences while applying modern engineering practices and emerging AI capabilities across the software development lifecycle. You will work from Mastercard’s technology hub in a collaborative, Agile environment alongside talented engineers, product managers, technical program managers, and test engineers. You will play an important role in helping Mastercard transform the B2B payments space by standardizing, automating, and optimizing payment experiences for buyers and sellers around the world. 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 supporting Mastercard’s global B2B platform. • 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: • Extensive experience designing and developing Java applications, Spring Boot services, RESTful APIs, and microservices in enterprise environments. • Strong understanding of microservice architecture, distributed systems, API design, and cloud-native development practices. • Experience using AI-assisted development tools to improve productivity and software quality across coding, refactoring, testing, debugging, documentation, and delivery. • Practical experience applying AI-assisted capabilities to code reviews, security and vulnerability analysis, dependency management, and automated testing, with sound engineering judgment and human review for production changes. • Strong SQL and database development skills with technologies such as