Engineering Jobs in O'Fallon, Missouri

Amrize is seeking a Mechanical Engineer Intern for Summer 2027 based in Ste. Genevieve, MO. This 10 - week, paid program offers hands - on experience in cement...

Blue Origin is hiring for an Electronics Technician in the operations group. You will build, wire, and test testers, fixtures, cables, and harnesses used to verify...

Position: HVAC Engineer & Facilities Lead (Tue–Sat) - College of Lake County is seeking an HVAC Engineer to service all HVAC mechanical systems, inspect equipment,...

Burns & McDonnell is hiring an Assistant Project Controls Specialist in St. Louis, MO. This role involves supporting all project controls aspects, including cost...

Application close date: - Applications will be accepted on an ongoing basis until the requisition is closed. At Blue Origin, we envision millions of people living and...

About Us - Clayco is a full - service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients...

Position: Technical Director - Environmental Remediation (Remote) - J.S. Held is seeking a Technical Director to lead the Environmental Investigation &...

Clayco is seeking a Project Manager in St. Louis, MO to lead design - build projects from concept to closeout. You’ll work with a team to deliver complex projects...

The Opportunity - As an Operations Manager for Digital Services, you will manage front - end technical sales support, order acceptance, and project execution for...

Position: Aviation Maintenance Technician 135 - Overview - Job Summary - *** $15,000 SIGN ON BONUS *** Rotor experience preferred as you will be working on a Bell 407...