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C# / Unity Developer Senior Developer

Senior Mainframe Software Engineer – C#​/.NET & COBOL

Job in O'Fallon, St. Charles County, Missouri, 63366, USA
Listing for: MasterCard
Full Time position
Listed on 2026-02-15
Job specializations:
  • Software Development
    C# / Unity Developer, Senior Developer
Salary/Wage Range or Industry Benchmark: 115000 - 184000 USD Yearly USD 115000.00 184000.00 YEAR
Job Description & How to Apply Below
A leading global technology company in payments is seeking a Senior Software Engineer (Mainframe) to lead software development efforts. This role will focus on planning, designing, and implementing technical solutions while ensuring adherence to best practices. Candidates should have experience in C# .NET and mainframe technologies, along with strong problem-solving and communication skills. This position offers a competitive salary range of $115,000 - $184,000 USD in O’Fallon, Missouri, along with comprehensive benefits.
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Position Requirements
10+ Years work experience
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