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10,000+ Senior Software Engineer jobs in O'Fallon, MO

Senior Software Engineer

At Mastercard -O'Fallon, MO

Posted on Feb 5

Software Developer, Senior - 37614

At Alion Science and Technology -Hazelwood, MO

Posted on Nov 16

Strategic Student Program: Platform Engineering Full-Stack Software Engineer Intern (GSM, Summer 2025)

At Siemens Digital Industries Software -Maryland Heights, MO / Remote

Posted on Feb 14

Software Engineer VI

At Spectrum -Maryland Heights, MO

Posted on Feb 13

Senior Software Engineer

At Mastercard -O'Fallon, MO

Posted on Nov 2

Software Engineer IV

At Spectrum -Maryland Heights, MO

Posted on Feb 20

Senior Software Engineer

At Mastercard -O'Fallon, MO

Posted on Dec 20

2025 Summer Intern: Software Engineer

At Spectrum -Maryland Heights, MO

Posted on Feb 18

Senior Software Engineer

At Mastercard -O'Fallon, MO

Posted on Jan 31

Senior Software Engineer

At Mastercard -O'Fallon, MO

Posted on Dec 15

Senior Software Engineer - Moon#059

At Mastercard -O'Fallon, MO

Posted on Jan 11

Senior Software Engineer In Test (SDET)

At Mastercard -O'Fallon, MO

Posted on Feb 12

Senior Software Engineer with Testing Focus

At Mastercard -O'Fallon, MO

Posted on Jan 25

Senior Software Engineer (IBM Mainframe, COBOL)

At Mastercard -O'Fallon, MO

Posted on Feb 20

Software Engineer II

At Mastercard -O'Fallon, MO

Posted on Jan 17

Principal Software Engineer - File Transfer Services

At Mastercard -O'Fallon, MO

Posted on Feb 21

Lead Software Engineer

At Mastercard -O'Fallon, MO

Posted on Oct 31

Lead Software Development Engineer

At Mastercard -O'Fallon, MO

Posted on Feb 2

Senior BizOps Engineer

At Mastercard -O'Fallon, MO

Posted on Jan 30

Lead Software Engineer

At Mastercard -O'Fallon, MO

Posted on Jan 24