Senior Software Engineer (Mainframe)

MainframeMaster; Fallon (NV); On-site; USD 115,000 - 183,998; Full time

Job summary

MainframeMaster is seeking a Senior Software Engineer (Mainframe) in Fallon, United States to lead software development initiatives.

The candidate will work closely with a team of software developers to design and implement innovative solutions, ensuring high-quality code and adherence to MasterCard standards. A strong background in C# .NET and familiarity with mainframe technologies is required.

This role offers a competitive salary and opportunities for professional growth in the digital economy.

Qualifications

• IT experience in all phases of the development lifecycle.
• Proficient in C# .NET and Quality Engineering Tools.
• High-energy, detail-oriented and able to function under pressure.

Responsibilities

• Plan, design and develop technical solutions to meet business requirements.
• Lead system development and maintenance activities.
• Perform system maintenance and incident problem management.

Skills

C# .NET

Quality Engineering Tools

Mainframe technologies (JCL, DB2, COBOL)

Automation scripts

Agile Methodology

Cloud/micro-services

Tools

Jenkins

Sonar

Clover

Job description

# Senior Software Engineer (Mainframe)MastercardFull-timeO Fallon, United States of America, 63368-7263USD 115,000 - 183,99824 viewsPosted February 28, 2026## Job DescriptionSenior Software Engineer (Mainframe)Who is MastercardMastercard 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.Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential.Job Overview:• Software development engineering in the Mastercard code application is a dedicated team of software developers leading the development transformation and working to facilitate best DevOps practices across MasterCard’s technology organization.• Requires hands-on experience in industry-standard developer tools, design, development, test, implement and support the solutions throughout the software development cycleRole• 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.## Requirements & SkillsAll about You• IT experience in all phases of the development lifecycle• Proficient development Knowledge in **C**# .NET , Quality Engineering Tools (Must)• Exposure in technologies in mainframe such as **JCL**, **DB2**, **COBOL**, File-Aid-**DB2**, STROBE , XPEDITER , ENDEVOR , OPC scheduler , TWS scheduler to support various testing of application running in Mainframe (preferred)• High-energy, detail-oriented, proactive and have the ability to function under pressure in an independent environment (Must)• Provide the necessary skills to have a high degree of initiative and self-motivation to drive results.• Possesses strong communication skills -- both verbal and written, collaborative skills and organizational skills.• Willingness and ability to learn and take on challenging opportunities and to work as a member of diverse and geographically distributed project team.• Ability to create automation scripts and integrate with Continuous integration and deployment pipeline (**Jenkins**/XLR) and code coverage tools (Sonar, Clover) to ensure higher code/conditional coverage. (Preferred)• Experience in working in Agile Methodology. (Preferred)• Knowledge in migrating from mainframe to **Cloud**/micro-services. (Preferred)• Experience of working with other developers to ensure that systems are designed for reliability, performance and testability.(Preferred)• Domain knowledge in Core Payments specifically around Knowledge in Transaction processing (Preferred)## How to ApplyApply directly through the application link above