Senior Software Engineer – Banking & API Security
Listed on 2026-10-18
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Software Development
Senior Developer, Software Engineer
Location: St. Louis
Mastercard is seeking a Senior Software Engineer to develop and maintain our Open Banking platform, connecting to banks across Europe. You will work on APIs, security, data accessibility and processing, joining a team spread across Denmark and Poland.
You will primarily code in C#/.NET on ASP.NET, deploying to Azure, with a strong emphasis on modern development practices, CI/CD, tests and infrastructure as code.
We are seeking a motivated Senior Software Engineer – Open Banking & API Security to join Mastercard in St. Louis, MO, United States.
Take a moment to read everything above and see whether this role is right for you.
This posting is for the Senior Software Engineer – Open Banking & API Security role at Mastercard, based in St. Louis, MO, United States.
We are looking to fill the Senior Software Engineer – Open Banking & API Security position at Mastercard in St. Louis, MO, United States.
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