Join Mastercard's Authentication team in Dublin as a Software Engineer II, focusing on site reliability for our global-scale Authentication and Post-Authentication platforms. These critical systems process over a billion transactions daily, powering real-time fraud decisioning. You'll ensure the reliability, availability, and performance of the Mastercard Fraud Decision Management Platform (DMP), a key component in fraud prevention. This role is perfect for those passionate about owning production systems, enhancing service reliability, and applying pragmatic engineering solutions to operational challenges.

Mastercard is dedicated to empowering economies and people across 200+ countries and territories, fostering a sustainable economy where everyone can prosper. We champion secure, simple, smart, and accessible digital payments through innovative technology, strategic partnerships, and extensive networks, enabling individuals, businesses, and governments to achieve their full potential.

As part of a dynamic, globally distributed Agile team, you will build, operate, and enhance low-latency, high-throughput services fundamental to real-time fraud decisioning on the Mastercard Fraud Platform.

Key responsibilities include: - Developing and maintaining robust CI/CD pipelines for reliable, repeatable deployments. - Deploying, operating, and troubleshooting services across hybrid environments, including AWS (EKS/Kubernetes), on-premise cloud, and traditional infrastructure, ensuring consistent reliability and scalability. - Collaborating with platform teams to bolster environment stability, scalability, and the developer experience. - Enhancing system reliability and observability in alignment with SRE best practices. - Participating actively in a co-located Agile Scrum team. - Partnering with Product Owners, Business Analysts, Systems Analysts, Technical Leads, and other developers to define user stories. - Crafting high-quality, scalable, and secure software solutions. - Providing support for operational issues through incident troubleshooting. - Researching alternative technical solutions to adapt to evolving business needs. - Working with project teams to meet deadlines while resolving emerging issues and proposing solutions. - Producing comprehensive design documentation adhering to Mastercard's standards.

We are seeking a Software Engineer II with a strong background in site reliability and a passion for building and operating highly available systems.

Essential skills include: - Proven experience in building CI/CD pipelines using tools such as Jenkins, Github Actions, Python, and shell scripting. - Demonstrated ability to design and maintain end-to-end deployment pipelines (build, test, deploy, rollback). - Hands-on experience with monitoring, logging, and alerting tools like Splunk, Dynatrace, or OpenTelemetry. - Familiarity with build tools (Maven/Gradle) and dependency management. - Exposure to configuration management and automation tools (e.g., Chef). - Experience with cloud platforms such as AWS or Azure. - Proficiency in containerization using Docker and managing image lifecycles. - Understanding of Infrastructure as Code (IaC) concepts and tools like Terraform or CloudFormation. - Knowledge of platform engineering principles, including creating reusable deployment templates and shared services. - Experience supporting multi-environment setups (dev, test, staging, production) with proper isolation and governance. - Strong troubleshooting capabilities in Linux-based production environments. - Awareness of SRE principles and reliability best practices. - Experience developing and integrating AI-driven workflows for automation in areas like incident analysis, anomaly detection, or intelligent observability. - A strong passion for Agile software development methodologies (SAFe or Scrum).

Additional desirable skills include proficiency in Java JDK 8+, expertise in Junit, knowledge of Tomcat, Spring, Spring Boot, experience with SQL, multi-threading, message queuing systems, distributed systems, and Business Rules Management Systems.

Excellent communication and collaboration skills are vital. You should demonstrate initiative, a drive for continuous improvement, a passion for code quality, and a strong team-player mentality. Fluency in English is required.