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463 junior engineer jobs at 226 companies in O'Fallon, MO

1w
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Junior Systems Engineer
Denver or St. Louis or Sterling or Springfield
$58k-$116k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
0+ YOETS/SCI clearance required, Bachelor\u0002s in engineering/computer science or equivalent, 0\u00023 years engineering experience, foundational systems engineering knowledge, strong written communication and attention to detail.
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1w
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Junior Systems Engineer
Denver or Springfield or Sterling or St. Louis
$58k-$116k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
0+ YOETS/SCI clearance with polygraph ability, bachelor's in engineering/computer science or equivalent, 0–3 years engineering experience, foundational systems-engineering or SDLC knowledge, strong written communication and attention to detail.
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2w
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Junior DevOps Engineer
St. Louis or Springfield
$115k-$125k/yr OnsiteFull Time
D2 Consulting
D2 Consulting: Provides IT engineering and cybersecurity services to federal agencies.
2+ YOETS/SCI clearance required, 2+ years relevant experience, experience with containers (Kubernetes/Docker/OpenShift), GitLab CI/CD, Python/Bash/Shell scripting, on-prem and cloud infrastructure, monitoring, and security practices.
Kubernetes, Docker, OpenShift, GitLab, Python, Bash, Shell, Helm, Jira, Confluence
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1mo
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Geospatial Engineer – Multiple Positions at Junior/Mid/Senior Levels
St. Louis or St. Charles or Virginia or Sun Prairie
OnsiteFull Time
NV5
NV5: Provides engineering, consulting, and geospatial solutions for infrastructure projects.
2+ YOEUS citizen with active/current Top Secret clearance (SCI eligible), Bachelor’s in GIS-related field, 2+ years GIS experience, proficiency with Esri/ArcGIS, Python and SQL, and relational databases.
ArcGIS Desktop, ArcGIS Enterprise, ArcGIS Online, Esri, Python, SQL, Oracle, SQL Server, PostgreSQL, Windows, Linux, UNIX
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1mo
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Geospatial Engineer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis
OnsiteFull Time
NV5
NV5: Provides engineering, testing, inspection, and infrastructure consulting services.
2+ YOEUS citizen with active Top Secret/SCI, Bachelor’s in GIS or related, 2+ years GIS experience, proficiency with ArcGIS/Esri products, Python and SQL, and relational databases (Oracle, SQL Server, PostgreSQL).
Esri, ArcGIS Desktop, ArcGIS Enterprise, ArcGIS Online, Python, SQL, Oracle, SQL Server, PostgreSQL, Windows, Linux, UNIX
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6d
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Test Lab Engineer Co-op
St. Louis, Missouri, United States
OnsitePart Time
Nidec
NidecTokyo Stock Exchange: 6594: Manufactures electric motors and electronic components for industrial applications.
Pursuing a B.S. in Electrical Engineering (junior), able to work ≥25 hrs/week, familiarity with multimeters and oscilloscopes, soldering and assembly skills, teamwork, multitasking, communication, and problem solving.
multimeter, oscilloscope
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2mo
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Field Engineer
Saint Louis, Missouri, United States
$62k-$87k/yr OnsiteFull Time
Terracon
Terracon: Provides geotechnical, environmental, construction, and facilities engineering services.
Bachelor’s degree in Engineering; valid driver’s license; Engineer-in-Training (EIT) or Engineering Intern (EI) preferred.
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1d
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Electrical Engineer (Engineer-In-Training)
Fairview Heights or St. Louis
$66k-$82k/yr HybridFull Time
Woolpert
Woolpert: Global architecture, engineering, and geospatial services firm.
Bachelor's in Electrical Engineering (ABET), ability to perform engineering computations, field investigations, CAD and Microsoft Office proficiency, strong communication and analytical skills.
Microsoft Office, CAD
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3d
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Civil Engineer
Scott AFB, Illinois, United States
$109k-$142k/yr OnsiteFull Time
Department of the Army
Department of the Army: A federal agency responsible for land-based military operations, logistics, and infrastructure support.
1+ YOEBachelor's in engineering (ABET or equivalent) or equivalent qualifications; 1 year specialized engineering experience analyzing transportation infrastructure, using modeling/simulation tools, and conducting engineering studies; U.S. citizenship required; submit licensure/certification; Secret clearance.
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3mo
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NPD Engineer
St. Louis or Belleville or Stafford or Duncan or Princeton
OnsiteFull Time
Astec Industries
Astec IndustriesNASDAQ: ASTE: Manufacturer of equipment for infrastructure, aggregate, and road construction.
2+ YOEBachelor's in engineering required, 2+ years engineering experience, proficiency with 3D CAD (SolidWorks, Inventor, Autodesk), MS Office and Dynamics AX, experience with design for manufacture and cross-functional collaboration.
SolidWorks, Inventor, Autodesk, Microsoft Excel, Microsoft Word, Microsoft Outlook, Microsoft Dynamics AX
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1mo
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Preconstruction Engineer
Granite City, Illinois, United States
OnsiteFull Time
iENG Design
iENG Design: Provides specialized mechanical and plumbing engineering and design services.
2+ YOEBachelor's in mechanical engineering, minimum 2 years mechanical/HVAC engineering experience (2–5+ preferred), knowledge of HVAC/plumbing/piping, ability to interpret plans, strong communication, PE a plus.
VDC, BIM
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5d
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Associate Engineer
Saint Louis, Missouri, United States
$66k-$101k/yr OnsiteFull Time
Metropolitan St. Louis Sewer District
Metropolitan St. Louis Sewer District: Manages wastewater and stormwater systems for the St. Louis region.
Bachelor's in engineering (or final-year student) required; valid state driver's license; ability to read engineering plans, use spreadsheets/design software, prepare technical reports; pass Non-D.O.T. drug test.
CMMS, IBM Maximo
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1mo
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Geotechnical Engineer
Chesterfield, Missouri, United States
OnsiteFull Time
THD Design Group
THD Design Group: Provides civil engineering, land surveying, and geotechnical services.
Bachelor's in Geological/Civil Engineering required; EIT/EI preferred. Experience in geotechnical fieldwork, lab testing, engineering analysis, report preparation, project management, and strong communication and problem-solving skills.
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3mo
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Engineer I
St. Charles, Missouri, United States
OnsiteFull Time
Patriot Machine
Patriot Machine: Manufactures complex structural parts and assemblies for the aerospace industry.
Engineering degree required; US person; strong mechanical aptitude; hands-on, detail-oriented; willing to learn through a development program.
CNC machining, machining
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1mo
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Mechanical Engineer
St. Louis, Missouri, United States
$77k-$93k/yr OnsiteFull Time
Elessent Clean Technologies
Elessent Clean Technologies: Providing process technologies for industrial sustainability and carbon neutrality.
0+ YOEBachelor's in Mechanical Engineering, 0-5 years engineering/design experience; EIT or PE preferred; Ansys CFD/FEA experience preferred; industrial equipment and piping design familiarity; strong communication and teamwork; willingness to travel internationally.
MECS®, STRATCO®, BELCO®, IsoTherming®, Ansys CFD, Ansys FEA
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1mo
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Project Engineer, Associate
Monroe, Louisiana, United States
OnsiteFull Time
M.C. Dean
M.C. Dean: Design-build and systems integration for complex, mission-critical infrastructure.
0+ YOE0+ years of experience with Bachelor of Science degree in Engineering (ABET preferred).
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6d
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Senior BIM Engineer
Saint Louis, Missouri, United States
OnsiteFull Time
PayneCrest Electric
PayneCrest Electric: Provides electrical contracting and engineering for industrial construction projects.
5+ YOE5+ years electrical construction/BIM experience; advanced Revit, AutoCAD, Navisworks proficiency; strong NEC and constructability knowledge; ability to lead coordination and mentor junior staff.
AutoCAD, Revit, Navisworks
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1mo
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Production Engineer
St. Louis, Missouri, United States
OnsiteFull Time
ALTANA
ALTANA: A global developer and manufacturer of innovative specialty chemicals.
2+ YOEBachelor's in chemical engineering (or similar), 2+ years manufacturing production experience, process optimization, project scoping, procedure writing, and strong communication and problem-solving skills.
LEAN, Six Sigma
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17h
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Quality Engineer
St. Louis, Missouri, United States
$68k-$86k/yr OnsiteFull Time
World Wide Technology
World Wide Technology: Global technology solutions provider and systems integrator.
2+ YOEBachelor's in engineering/operations/supply chain or related, minimum 2 years supporting a QMS, ISO 9001 experience, PFMEA and control plan experience, proficiency with Microsoft Office, strong communication.
Microsoft Office, PFMEA, CAPA, ISO 9001
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3d
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Mechanical Engineer
Earth City, Missouri, United States
HybridFull Time
MiTek
MiTekNYSE: BRK-B: Provides software and automation for the building industry.
2+ YOEBachelor's in mechanical engineering preferred, up to 2 years related experience, understanding of strength/statics/dynamics, proficiency with SolidWorks/PDM/AutoCAD Mechanical, FEA and MRP/ERP familiarity, 10% travel.
SolidWorks, PDM, AutoCAD Mechanical, FEA, MRP, ERP
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