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
Mastercard Senior Software Engineer (MQ) Role Overview
Who Is Mastercard
Mastercard is a global technology company operating within the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. We leverage secure data and networks, strong partnerships, and a passion for innovation to deliver solutions that help individuals, financial institutions, governments, and businesses realize their greatest potential.
Our culture is defined by our decency quotient (DQ), which guides our actions both inside and outside the company. With connections spanning more than 210 countries and territories, Mastercard is committed to building a sustainable world that unlocks priceless possibilities for all.
Organizational Overview
The Reactive Systems Architecture integration program establishes standard patterns for integration across Mastercard programs and between Mastercard and its customers. The vision of this program is to enable customers to access products and services through comprehensive, reusable capabilities.
For developers, the goal is to provide a simplified deployment and provisioning experience that allows shared services to be declaratively configured across on-premises, cloud, and edge environments. This enables development teams to focus on solving business problems while ensuring security, scalability, and reliability are built in by default.
Senior Software Engineer (MQ) Role
Position Summary
As a Senior Software Engineer (MQ) at Mastercard, you will be a highly skilled individual contributor responsible for the design, implementation, and reliability of the enterprise messaging platform, with a strong focus on IBM MQ in complex, high-availability environments.
This role is primarily hands-on and technical, working closely with application teams, infrastructure, SRE, and security partners to ensure messaging solutions are secure, scalable, observable, and resilient. You will contribute to platform improvements, operational excellence, and the adoption of messaging best practices across the organization.
Responsibilities
• Design, implement, and support enterprise-grade IBM MQ solutions for mission-critical distributed systems.• Contribute to the evolution of MQ platform architecture, standards, and best practices in partnership with senior and lead engineers.• Install, configure, upgrade, and patch IBM MQ across multiple environments, including on-premises and cloud.• Implement and support high availability, disaster recovery, and performance-tuning strategies for MQ queue managers.• Work with application teams to design and integrate reliable messaging patterns, including request/reply, pub/sub, and event-driven architectures.• Apply MQ security standards, including TLS, certificates, authentication, authorization, and queue-level access controls.• Build and maintain monitoring, alerting, and observability for MQ infrastructure to support proactive operations.• Participate in production incident response and root-cause analysis, contributing to corrective and preventative actions.• Automate operational tasks using scripting and configuration management tools to improve reliability and efficiency.• Share knowledge through documentation, code reviews, and informal mentoring of junior engineers.• Stay current with IBM MQ enhancements and messaging industry trends to recommend incremental improvements.
Qualifications
• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.• 5+ years of experience working with enterprise messaging platforms, with solid hands-on expertise in IBM MQ.• Experience supporting MQ in production, high-availability environments.• Strong understanding of messaging fundamentals, including queuing, pub/sub, persistence, transactions, and message ordering.• Proven ability to troubleshoot complex technical issues across distributed systems.• Experience collaborating closely with application development and infrastructure teams.
Preferred Skills
• Exposure to distributed messaging or streaming platforms such as Kafka or NATS.• Linux/Unix system administration experience in enterprise environments.• Scripting experience with Shell, Python, or similar languages for automation.• Familiarity with Docker and Kubernetes, including containerized MQ deployment patterns.• z/OS experience (nice to have).• Experience with configuration management tools such as Ansible or Chef.• Familiarity with AWS or hybrid cloud messaging architectures.• Understanding of observability concepts, including monitoring, logging, and alerting for middleware platforms.
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.