Senior Software Integration 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 Integration Engineer

Overview

The SME team is looking for a Senior Software Integration Engineer who can contribute independently in complex situations while supporting quality, engineering, and delivery goals. This role requires strong experience in agile work management, integration testing, quality assurance, requirements management, SDLC practices, systems integration, troubleshooting, web services, workflow management, and test automation.
The ideal candidate will plan, prioritize, and manage work using agile practices to enable iterative delivery, collaboration, adaptability, and continuous improvement. They will partner with developers and engineering teams to review source code, identify issues, improve quality, and promote maintainability and coding standards.
This position is responsible for designing, executing, and maintaining tests that validate interactions across integrated components, systems, services, APIs, data flows, interfaces, and dependencies. The candidate will help establish and maintain QA processes and standards that prevent defects, optimize performance, improve customer satisfaction, and support compliance.
The role also requires strong understanding of requirements management, SDLC, systems integration, web services, troubleshooting, and workflow management. The candidate should be a key contributor who can guide others informally and help teams deliver reliable, maintainable solutions.
Role

In this role, you will:
• Perform QE activities across assigned projects, including test planning, strategy, validation, automation, and release readiness.
• Collaborate with cross-functional engineering teams to enhance testing processes and strengthen quality practices.
• Contribute to SME QE teams focused on test validation and automation within assigned projects.
• Design, execute, and maintain integration tests to validate interactions between systems, services, APIs, data flows, interfaces, and dependencies.
• Establish and maintain QA processes and standards that prevent defects, improve quality, optimize performance, and support customer expectations.
• Apply agile work management practices to plan, prioritize, and manage work effectively in iterative delivery environments.
• Partner with product owners, developers, and delivery teams to review requirements, clarify acceptance criteria, manage changes, identify risks, and ensure testability throughout the SDLC.
• Support SDLC activities including requirements, design, coding, testing, deployment, and maintenance to ensure solutions remain high quality and maintainable.
• Contribute to systems integration by validating communication, interoperability, and reliability across diverse technologies, processes, applications, and services.
• Implement and support UI, API, backend, and integration automation using tools such as Playwright, Cypress, and API automation frameworks.
• Support API performance testing and performance validation using tools such as Gatling and BlazeMeter.
• Troubleshoot complex issues across systems, applications, services, integrations, test environments, and networks using structured methods and tools.
• Evaluate source code written by developers to identify and address potential issues, support maintainability, improve quality, and ensure adherence to coding standards and best practices.
• Analyze workflows, identify bottlenecks, streamline procedures, monitor progress, allocate resources, and adapt processes to ensure work moves smoothly from one stage to the next.
• Contribute to CI/CD and DevOps practices by supporting automated test execution, version control, and integration of test automation into delivery pipelines.
• Provide technical guidance to team members, support proof-of-concepts, coach others informally, and help teams adopt scalable and maintainable test automation practices.
• Communicate status, risks, dependencies, and quality insights clearly to stakeholders and leadership.
• Promote agile ways of working, continuous learning, collaboration, accountability, and continuous improvement across the team.

All About You / Experience

The ideal candidate for this position should have:
• Strong experience in quality engineering, test strategy, planning, automation, QA, and software validation across complex technology programs.
• Ability to apply skills independently and consistently in complex or nuanced situations while supporting broader business, delivery, and quality goals.
• Strong knowledge of agile principles and practices, including planning, prioritization, iterative delivery, collaboration, adaptability, and continuous improvement.
• Experience collaborating with developers and engineering teams to review source code, identify potential issues, improve maintainability, and promote coding standards and best practices.
• Hands-on experience with UI and API automation tools such as Playwright and Cypress.
• Strong experience in API integration testing and backend validation.
• Experience designing and maintaining integration tests that validate data flows, interfaces, dependencies, web services, and system interactions.
• Experience with API performance testing and exposure to performance testing tools such as Gatling and BlazeMeter.
• Strong understanding of requirements management, including documenting, analyzing, tracing, prioritizing, agreeing on, and communicating requirements and changes to stakeholders.
• Strong understanding of software development life cycle practices, including requirements gathering, design, coding, testing, deployment, and maintenance.
• Experience with systems integration, including validating communication and interoperability across applications, services, technologies, and processes.
• Strong troubleshooting and analytical skills, with the ability to systematically identify, diagnose, and resolve technical issues across systems, applications, services, test environments, and networks.
• Experience with web services and standardized protocols that enable communication, data exchange, interoperability, scalability, and integration across diverse systems.
• Ability to analyze workflows, identify bottlenecks, streamline procedures, monitor progress, allocate resources, and adapt processes to achieve outcomes.
• Working knowledge of version control tools such as Git.
• Experience with API testing tools such as Insomnia.
• Experience with test case management tools such as XRay.
• Experience with project management tools such as Jira.
• Exposure to cloud platforms, preferably Azure.
• Familiarity with AI-assisted engineering and quality practices, including GitHub Copilot, Playwright MCP servers, and automation accelerators.
• Ability to work on proof-of-concepts.
• Excellent written and verbal communication skills, with the ability to collaborate across teams and present quality insights clearly.
• Self-driven, proactive, adaptable, and committed to continuous improvement.

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.