Mechanical Designer jobs in O Fallon, IL

Technician III - Mechanical Service

GEMCO Constructors
O'Fallon,IL,
Posted 2 days ago

Electrical Maintenance Mechanic

Sterling Engineering
Alorton,IL,
Posted 1 day ago

Mechanical Engineering Spring Co-Op

Ameren
Saint Louis,MO,
Posted 3 days ago

Mechanical Project Engineer

IMEG
Saint Louis,MO,
Posted 3 days ago

Manufacturing Engineer Aerospace Subsystems

ClearanceJobs
Saint Louis,MO,
Posted 3 days ago

Mid-Level HVAC Mechanical Design Engineer - Multiple Sectors

Henderson Engineers
Saint Louis,MO,
Posted 3 days ago

Drafter/Designer

Power Engineers
Saint Louis,MO,
Posted 1 week ago

Manufacturing Engineer 4

Lancesoft
Mascoutah,IL,
Posted 3 days ago

Manufacturing Engineering Internship - Summer 2026

Intramotev
Saint Louis,MO,
Posted 3 days ago

Field Service Technician

Lincoln Electric
O'Fallon,IL,
Posted 6 days ago