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3,757 Science and Engineering jobs in O'Fallon, MO

Lead BizOps Engineer

At Mastercard -O'Fallon, MO

Posted on Sep 22

Sr Consultant Engineer

At FM Global -Maryland Heights, MO

Posted on Jul 15

Safety Scientist II (Client-Dedicated) - 6 months contract with possible extension

At Thermo Fisher Scientific -Remote

Posted on Nov 17

Engineer III - Cloud (Remote)

At CrowdStrike -Remote

Posted on Nov 16

Senior Relay Settings Engineer

At Leidos -Remote

Posted on Oct 4

Support Engineer - Compass

At Atlassian -Remote

Posted on Oct 2

Network Operations Engineer, Subsea

At Meta -Remote

Posted on Sep 23

Inland Marine Risk Engineering Technical Manager

At The Hartford -Remote

Posted on Sep 23

Consulting Systems Engineer

At World Wide Technology -Remote

Posted on Sep 23

Medical Affairs Scientist (m/w/d) Außendienst für Onkologie/ Hämatologie

At Pfizer -Remote

Posted on Sep 23

WCM Industrial Efficiency Engineer

At Saint-Gobain -Remote

Posted on Dec 15

Technical Support Engineer

At Socure -Remote

Posted on Nov 18

Solution Engineer - State & Local Government (Midwest)

At Esri -St. Louis, MO

Posted on Sep 26

2025 Summer Mechanical/Civil Engineering Intern (Jefferson City)

At Hitachi Energy -Jefferson City, MO

Posted on Sep 27

Multi-Service PA1

At Capgemini -Abilene, TX

Posted on Sep 23

BizOps Engineer I

At Mastercard -O'Fallon, MO

Posted on Sep 28

Sr. Engineer - Backend - 3PI (Remote, IND)

At CrowdStrike -Remote

Posted on Sep 24

EPC Engineering Civil & Structural Manager

At Leidos -Remote

Posted on Sep 25

Principal, Oracle DBA (Site Reliability Engineer)

At Mastercard -O'Fallon, MO

Posted on Oct 5

Senior Site Reliability Engineer

At Mastercard -O'Fallon, MO

Posted on Sep 22