Software & DataOn site
Senior Software Engineer
MastercardO'Fallon, MO
$115,000–184,000/yr
Posted Sep 28, 2026
What you’d do
Performance engineering role on Mastercard's Transaction Switching team in O'Fallon, Missouri. You will partner with development teams to performance test and tune each release, working with C/C++, Linux, and scripting to improve authorization response time. Found on the employer's careers page on Sep 29, 2026. Apply through the link.
Our summary of the listing. The full listing has the details.