37 intern engineering jobs at 25 companies in Alton, IL

2w
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Engineering Intern
Red Bud, Illinois, United States
$21/hr OnsiteFull Time, Internship
PlayCore
PlayCore: Designs and manufactures commercial playground and recreational equipment.
Must be a junior or senior pursuing a bachelor’s in Industrial/Manufacturing Engineering or Industrial Management; basic Lean knowledge; strong communication, analytical, and teamwork skills; proficient in Microsoft Office.
Microsoft Outlook, Microsoft Excel, Microsoft Word, Microsoft Project, Microsoft PowerPoint
2w
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Engineering Intern
Red Bud, Illinois, United States
$21/hr OnsiteFull Time
PlayCore
PlayCore: Designs and manufactures commercial playground and recreational equipment.
Junior or senior pursuing a bachelor's in Industrial/Manufacturing Engineering or Industrial Management; basic Lean knowledge; strong communication, teamwork, analytical skills; proficiency with Microsoft Office; minimal travel.
Microsoft Outlook, Microsoft Excel, Microsoft Word, Microsoft Project, Microsoft PowerPoint
1w
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Engineering Intern
St. Louis, Missouri, United States
OnsiteInternship, Full Time
Metropolitan St. Louis Sewer District
Metropolitan St. Louis Sewer District: Manages wastewater and stormwater systems for the St. Louis region.
Currently enrolled full-time in a bachelor's engineering program; valid driver's license; able to work up to 40 hours/week in St. Louis; pass non-DOT drug test.
2d
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Engineering Intern - Transmission Line
St Louis, Missouri, United States
OnsiteInternship
Summit Line Construction
Summit Line Construction: Builds and maintains electrical transmission and distribution utility infrastructure.
Pursuing ABET-accredited Bachelor's in Civil, Mechanical or Structural Engineering; familiarity with AutoCAD, MicroStation, ArcGIS or PLS-CADD; basic knowledge of NESC, IEEE, ANSI, IBC; strong communication and teamwork skills.
PLS-CADD, AutoCAD, MicroStation, ArcGIS
1w
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MECHANICAL ENGINEERING INTERN (Fall Semester Position)
Sauget or St. Louis
$20-$22/hr OnsiteMultiple Commitments Available
Filtration Group
Filtration Group: Manufacturer of mission-critical filtration and separation solutions.
Undergraduate engineering student (sophomore–senior), SolidWorks and Microsoft Excel proficiency, strong mechanical design skills, communication, organization, and ability to manage multiple projects.
SolidWorks, Microsoft Excel
4w
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Engineering Manager
High Ridge, Missouri, United States
OnsiteFull Time
The H-J Family of Companies
The H-J Family of Companies: Manufactures and supplies electrical components for global power distribution systems.
15+ YOEBachelor's in Electrical or Mechanical Engineering required (Master's preferred); 15+ years electrical industry experience; 10+ years field applications experience with power products; 2+ years international experience; engineering leadership; simulation/design software experience; willing to travel up to 15%.
4w
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Engineering Manager
High Ridge, Missouri, United States
OnsiteFull Time
H-J Family of Companies
H-J Family of Companies: A global designer and manufacturer of products for the transformer and switchgear industries that values innovation, quality, and continuous improvement.
15+ YOEBachelor's in Electrical or Mechanical Engineering required (Master's preferred); 15+ years electrical industry experience, 10+ years field applications with power products, 2+ years international experience, engineering team leadership, simulation/design software experience, willing to travel up to 15%.
1mo
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Intern - AI/ML Data Engineering - Onsite - St. Louis
Saint Louis, Missouri, United States
OnsitePart Time, Internship
Core & Main
Core & MainNYSE: CNM: Distributes products for water, wastewater, and fire protection infrastructure.
Currently pursuing a Bachelor's or Master's in CS, Data Science, Engineering, Math or related; basic programming (Python preferred); foundational statistics/ML and data analysis knowledge; exposure to SQL, Python libraries, cloud platforms, and Git; ≤2 years professional experience preferred.
Python, Pandas, NumPy, scikit-learn, PySpark, SQL, Microsoft Azure, Copilot Agents, Microsoft Power BI, Tableau, Git
1mo
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Intern to Entry Level Conversion - Engineering (Summer 2026 Intern Program)
Seattle or Saint Charles or Huntsville or Portland or Midwest City or Oklahoma City or Berkeley or Miami or Huntington Beach or Hazelwood or Germantown or El Segundo or Fort Walton Beach or Ridgecrest or Tukwila or North Charleston or Kennedy Space Center or Heath or Houston or Fairfax or Colorado Springs or Seal Beach or Long Beach or Newburgh or Renton or Saint Louis or Auburn or Philadelphia or Everett or San Antonio or Kent or Mesa or New Orleans
$50k-$174k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, satellites, and defense systems.
Currently enrolled engineering/applied-sciences student with expected graduation before September 2027; previously interned with Boeing; strong academics, collaboration, and technical project experience; ability to meet export-control U.S. Person requirements for many roles.
1mo
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Intern Technical US- Quality Seasonal
Maryland Heights, Missouri, United States
OnsiteFull Time
Refresco
Refresco: Independent global provider of beverage bottling and manufacturing solutions.
Pursuing engineering, business, HR, supply chain, food science, finance, safety, or related field; GPA 3.0+; 18+; eligible for university credit; able to work full time in a manufacturing setting; safety and GMP awareness preferred.
Microsoft Office
3mo
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IT Intern
St. Louis or Fenton
OnsiteInternship
Tacony
Tacony: Manufacturer and distributor of sewing and floor care products.
2+ YOEPursuing a Bachelor's degree in CS/IS/Software Engineering/MIS; 2 years total work experience with at least 1 year in related IT field; strong communication; curious problem solver.
C#, DotNET, Epicor ERP, Python, Make, Zapier, Cursor, Replit, ChatGPT, AI tools
1mo
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Designer/Drafter Intern
Fairview Heights, Illinois, United States
$20-$25/hr OnsiteMultiple Commitments Available
Schweitzer Engineering Laboratories
Schweitzer Engineering Laboratories: Manufactures digital systems that protect and automate power grids.
Current university student pursuing CAD/Electrical Design/Drafting; competence in AutoCAD and/or MicroStation; strong writing, documentation, and speaking skills; ability to learn and work cooperatively; must complete assigned work on schedule and assist with relay rack construction/testing.
CAD, AutoCAD, MicroStation
2d
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Intern Engineer - Summer 2027 - Central Division (For Current/Former HNTB Interns Only)
Austin or Baton Rouge or Dallas or Des Moines or El Paso or Fort Worth or Houston or Kansas City or Little Rock or New Orleans or Oklahoma City or Overland Park or Plano or Round Rock or San Antonio or St. Louis
OnsiteFull Time
HNTB
HNTB: Infrastructure design and engineering for transportation and public works
High school diploma/GED plus current enrollment in an accredited engineering program. Basic engineering/math skills, Microsoft Office proficiency, ability to perform basic calculations and prepare shop drawings.
Microsoft Office
1d
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Mechanical Engineer Intern
Boise or St. Louis
OnsiteInternship
Safe Fleet
Safe Fleet: Integrated smart safety solutions for fleet vehicles.
Currently pursuing a Bachelor's in Mechanical/Industrial/Manufacturing Engineering or related; basic mechanical design and manufacturing knowledge; proficiency with Microsoft Office; hands-on shop and prototyping experience preferred.
Microsoft Office, ERP, PLM, CAD, SolidWorks, 3D scanner
2mo
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Project Engineer Intern
Dupo, Illinois, United States
HybridMultiple Commitments Available
The Goley Companies
The Goley Companies: Provides professional insulation and building performance solutions for properties.
0+ YOECurrently pursuing a Bachelor's in Construction Management or related field; interest in preconstruction/estimating; blueprint reading; detail-oriented; strong communication and teamwork.
PlanSwift, Excel, Outlook, Adobe PDF
1mo
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Material Planning and Inventory Intern
St. Louis or Knoxville
HybridInternship, Full Time
Emerson
EmersonNYSE: EMR: Engineering industrial automation and software solutions for global industries.
Enrolled college student (junior/senior/graduate) pursuing business, supply chain, engineering or equivalent; legal U.S. work authorization required; coursework or experience with ERP/MRP and data analysis preferred.
ERP, MRP
2w
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Performance Engineer Intern, Systems Software- Fall 2026
St. Louis, Missouri, United States
$20-$71/hr OnsiteFull Time, Internship
NVIDIA
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
Enrolled in a Bachelor's in CS/CE/SE or related; experience with Python and Linux; familiarity with ML lifecycle; teamwork and CS fundamentals; interest in performance benchmarking and containers.
Python, Linux, PyTorch, CUDA, cuOPT, CUTLASS, cuDNN, Kubernetes, Slurm
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.
1mo
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DevOps Engineer Intern
Saint Louis, Missouri, United States
OnsiteFull Time, Internship
Delta Dental of Missouri
Delta Dental of Missouri: Provides dental and vision insurance plans and provider networks.
Currently pursuing or recently completed degree in CS/Engineering; familiarity with Agile/DevOps, basic programming (Python, C#, Java, JavaScript), Git, Jira, CI/CD, Azure, MLOps; strong analytical and communication skills.
Microsoft Azure, Azure DevOps, Python, C#, Java, JavaScript, Git, Jira, Jenkins, Docker, Kubernetes, Selenium, MLOps
2mo
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Project Manager I, II, III - Planning & Programming Engineer
Creve Coeur, Missouri, United States
OnsiteFull Time
St. Louis County
St. Louis County: Provides essential public services and governance for St. Louis County.
Bachelor's degree in Civil Engineering or related field; FE exam and Engineering Intern for II; Registered Professional Engineer or related certification for III; GIS and transportation planning software proficiency.
ArcGIS, MicroStation, OpenRoads, Autoturn, Synchro, Microsoft Excel

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