Senior Software Engineer (Mainframe)

Mastercard

Closed

Full-time

O Fallon, United States of America, 63368-7263

USD 115,000 - 183,998

58 views

Posted February 28, 2026

Job Description

Senior Software Engineer (Mainframe) Who is Mastercard Mastercard is a global technology company in the payments industry. We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible.

Senior Software Engineer (Mainframe) at Mastercard (Closed)

Role • Plan, design and develop technical solutions and alternatives to meet business requirements in adherence with MasterCard standards, processes and best practices. • Lead day-to-day system development and maintenance activities of the team to meet service level agreements (SLAs) and create solutions with a high level of innovation, cost effectiveness, high quality and faster time to market. • Accountable for full systems development life cycle including creating high quality requirements documents, use-cases, design and other technical artifacts including but not limited to detailed test strategy/test design, performance benchmarking, release rollout and deployment plans, contingency/back-out plans, feasibility study, cost and time analysis and detailed estimates. • Perform system maintenance, production incident problem management, identification of root cause, remediation of the problems and on-call pager support schedule. Select appropriate technical frameworks and solution delivery methodology. • Adapt to the technical artifact templates per the needs of the project and technology. Contribute ideas to help ensure that required standards and processes are in place. Maintain solution and technology road maps. • Research and evaluate current and upcoming technologies and frameworks. • Participate in PoCs (Proof of Concept) and help the Department with selection of Vendor Solutions, Technologies, Methodologies and Frameworks. • Collaborate with Vendor Resources for Support of Products. • Follow and promote Quality Assurance and Quality Control processes in the department. Actively look for opportunities to enhance standards and improve process efficiency. Mentor and guide other team members during all phases of the SDLC. Ensure adequate test coverage in Unit Testing, System Testing/Integration • Testing and Performance Testing. Perform Quality Inspections and Walkthroughs throughout the SDLC including Requirements Review, Design Review, Code Review and Security Review to ensure compliance with MasterCard standards.

Senior Software Engineer (Mainframe)

Job Description

Senior Software Engineer (Mainframe)

Job Description

Requirements & Skills

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