# Senior Software engineer at Mastercard

Mastercard is hiring a Senior Software engineer. Level rates it Little AI ●○○○; you can [apply on Level](https://jobsbylevel.com/go/863f827f-d207-48ca-94d4-b54ea3212365?utm_medium=ai-agent).

AI Level 1, AI centrality 34 out of 100. O'Fallon, Missouri.

## Details

- Company: [Mastercard](https://jobsbylevel.com/companies/mastercard)
- AI level: AI Level 1 (score 34 out of 100)
- Location: O'Fallon, Missouri
- Posted: October 12, 2026
- Apply: https://jobsbylevel.com/go/863f827f-d207-48ca-94d4-b54ea3212365?utm_medium=ai-agent

## Description

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 About the Role The Mastercard Operational Intelligence Program is engaged in developing innovative solutions through technology that keeps Mastercard positioned as a leader in delivering value-added business analytics and reporting solutions to our diverse customer base. We work collaboratively with our product partners and other technical teams to continuously improve and enhance our existing products and drive new products to the global marketplace. We are currently seeking a Senior Software Engineer to join the Mastercard Operational Reports NexGen development team to work on Enterprise Applications to deliver technical solutions using JAVA technology stacks and Angular/ React front-end technologies. The successful candidate will contribute to software architecture, performance engineering, secure software development, operational excellence, and continuous improvement initiatives while delivering highly available, resilient, and secure enterprise applications. Role • Participate in the gathering and analysis of business requirements and translate them into scalable, maintainable, and secure software solutions. • Support the technical lead in defining application architecture, software design patterns, component interactions, and technology standards. • Ensure software designs align with Mastercard Enterprise Architecture and leverage enterprise services and reusable platforms. • Ensure product development meets Mastercard's business, scalability, performance, security, and reliability requirements. • Ensure development teams utilize appropriate Mastercard development methodologies, engineering standards, and documentation practices. • Conduct and participate in code reviews to improve code quality, maintainability, security, consistency, and adherence to software engineering best practices. • Provide functional guidance, knowledge sharing, and technical recommendations to team members when appropriate. • Design, develop, maintain, and support high-quality software solutions using modern software engineering principles and practices. • Design, develop, and maintain unit, functional, integration, and automated tests to validate application functionality, system interactions, reliability, and performance. • Support continuous integration and continuous testing practices to improve software quality and release confidence. • Ensure that software and system design support the goal of zero downtime, high availability, resiliency, and operational excellence in production environments. • Respond to operational and business concerns or issues relative to business programs, projects, and platform enhancements to ensure consistent delivery of quality services. • Investigate and resolve complex production, application, integration, and infrastructure issues through structured troubleshooting, root cause analysis, and corrective action planning. • Ensure development supports all required certifications and compliance requirements, including PCI, GLBA, Safe Harbor, and other applicable standards. • Apply secure coding practices, security-by-design principles, and vulnerability prevention techniques throughout the software development lifecycle. • Identify, assess, and remediate application security vulnerabilities while ensuring alignment with Mastercard security standards and industry best practices. • Responsible for performance engineering of enterprise software architecture through

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Source: https://jobsbylevel.com/jobs/senior-software-engineer-at-mastercard-299b4a

## Cite this page

Level. https://jobsbylevel.com/jobs/senior-software-engineer-at-mastercard-299b4a.

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