**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 (Java Developer, Spring Boot) Key Skills: Core Java (8/11/17) – Strong fundamentals in object-oriented programming, multi-threading, and exception handling Spring Boot – REST APIs, Spring Data JPA, Spring Security, Spring Cloud Microservices Architecture – Design, development, deployment, and orchestration Cloud Platforms – AWS / Azure / GCP (any exposure to cloud-native services preferred) API Standards – OpenAPI / Swagger / JSON / YAML Build & Deployment – Maven/Gradle, Jenkins, CI/CD pipelines Quality & Automation – Unit Testing (JUnit/TestNG), Code Coverage (Jacoco/SonarQube), Integration Testing Performance Optimization – Profiling, load testing, async processing, caching strategies DevOps & Monitoring Tools – Docker, Kubernetes, ELK stack, Prometheus, Grafana Responsibilities: Design & Development: Design, develop, and deploy high-performance, scalable Java-based microservices Implement and maintain REST APIs following OpenAPI/Swagger standards Follow API-first and Cloud-native design principles Quality Engineering & Best Practices: Analyze code review reports, ensure adherence to clean code principles and coding standards Drive adoption of automated unit tests, integration tests, and contract tests Measure and improve code coverage, performance benchmarks, and API reliability Automation and Testing: Develop and extend automation frameworks for both API and integration-level testing Support BDD/TDD practices across development teams Integrate testing pipelines into CI/CD workflows Performance, Scalability & Monitoring: Design for performance tuning, scalability, asynchronous processing, and fault tolerance Contribute to setting up monitoring and alerting dashboards for production systems Collaboration and Mentoring: Work closely with DevOps, Product Owners, and QA teams for feature delivery Mentor junior developers, conduct code walkthroughs, and lead design discussions Participate in technical design reviews, architecture discussions, and production issue triaging Preferred Experience: 5+ years of hands-on Java development experience Deep understanding of Microservices design patterns, API Gateways, and service discovery Exposure to Cloud deployment models like AWS ECS/EKS, Azure AKS, or GCP GKE Proficiency with Git, Jenkins, SonarQube, and containerization (Docker/Kubernetes) Experience working in Agile/Scrum teams Exposure to Observability tools: ELK stack, Prometheus, Grafana (Preferred but not mandatory) Good to Have: Experience with API security standards (OAuth2, JWT) Exposure to event-driven architecture using Kafka or RabbitMQ Knowledge of Infrastructure as Code (IaC) tools like Terraform or CloudFormation Familiarity with performance testing tools like JMeter, Gatling, etc. Behavioral Traits: Ownership-driven mindset with a passion for building scalable backend systems Strong communication skills to coordinate across multi-functional teams Ability to dive deep into technical problems and deliver solutions under tight deadlines **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.