Top 14 Engineering intern Jobs in St. Louis Mo

Mechanical Engineering Intern
Innovative Timing Systems —St. Louis, MO
- $25 - $30 an hour
- Part-time
- Entry level
Quick Apply
13d
Civil Engineering Intern
Wilson & Company, Inc., Engineers & Architects —St. Louis, MO
- $19 - $22 an hour
- Part-time
- Civil engineering
- Microsoft Excel
- Microsoft Outlook
- Disability insurance
- Health insurance
Quick Apply
Performance Engineer Intern, Systems Software- Fall 2026
NVIDIA —St. Louis, MO
- $20 - $71 an hour
- Full-time
- Computer Science
- Windows
- Linux
Engineering Intern
Metropolitan St. Louis Sewer District —St. Louis, MO
- Full-time
- Construction site
- Engineering
- Pass drug screening
6d
Mechanical Intern
Solutions AEC LLC —St. Louis, MO
- $18 - $20 an hour
- System design
- Budgeting
- Internship
Quick Apply
IT Intern - Data Architecture
Bi-State Development Agency —St. Louis, MO
- $20 an hour
- Microsoft Excel
- Computer Science
- Office
Network, Security, and Information Engineer Associate Intern
MALISKO ENGINEERING —St. Louis, MO
- Temporary
- Writing skills
- English
- Office
- Profit sharing
- Health insurance
Intern - IT/RPA Automation
BJC HealthCare —St. Louis, MO
- Part-time
- Children
- IT
- Public Health
- Disability insurance
- Health insurance
Engineering Intern - Transmission Line
Quanta Services —St. Louis, MO
- Full-time
- Writing skills
- Internship
- Civil Engineering
10h
Intern Engineer - Summer 2027 - Central Division (For Current/Former HNTB Interns Only)
HNTB Corporation —St. Louis, MO
- Full-time
- High school diploma or GED
- Entry level
3h
Electrical Intern
Solutions AEC LLC —St. Louis, MO
- $18 - $20 an hour
- Monday to Friday
- System design
- Research
- Analysis skills
Quick Apply
MECHANICAL ENGINEERING INTERN (Fall Semester Position)
Filtration Group Corp —St. Louis, MO
- $20 - $22 an hour
- Temporary
- ERP systems
- Office
- Manufacturing
10d
Kids STEM Instructor: Afterschool, Weekend, & Summer Camp + Internship
Code Ninjas of O'Fallon —Shiloh, IL
- $15 - $17 an hour
- Part-time
- Background check
- Classroom
- CPR Certification
- Employee discount
- Opportunities for advancement
Quick Apply

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engineering intern jobs near st. louis mo

Mechanical Engineering Intern

Innovative Timing Systems -
St. Louis, MO

Quick Apply

Job Details

Part-time
$25 - $30 an hour
13 days ago

Qualifications

Interpersonal skills
Mechanical Engineering
3D printing
Fusion 360
FEA

Full Job Description

About the role

We're looking for a mechanical engineer to own the physical design of our products and help lead production — both improving what we already make and bringing new products to life. This is a rare chance to take real ownership early: you'll carry designs from concept, to CAD, to a part you can hold in your hands.

This role is what you make of it. We're looking for a self-starter who can take the reins and run without hand-holding — someone who will make the position their own and help shape the future of design and product direction at Innovative Timing Systems as we grow. We'll give you ownership and trust; we expect you to run with it.

We're hiring for the long term. We want someone who can grow with us and step into a permanent, senior role as the company scales.

What you'll do

Own the mechanical design of our products, from concept through detailed CAD models and drawings
Prototype quickly with 3D printing, then test, iterate, and refine
Fabricate and produce parts — CNC and other shop processes — for both prototypes and production runs
Lead and improve production of our existing products, and stand up production for new ones
Work closely with the whole team across design, sourcing, assembly, and testing to ship products that work

What you'll bring

Above all, we care about attitude and initiative. If you're a self-starter with a great attitude — a hard worker who can take a problem and run with it, a genuine team player, and flexible enough to jump on whatever the day needs — you'll thrive here.

A self-starter who takes initiative and works independently — we'll hand you ownership, not step-by-step direction
Real, hands-on experience actually making things — we want proof you've designed and built, not just studied the theory (a portfolio or project examples strongly preferred)
Strong CAD skills — Fusion 360 preferred (or solid experience in a comparable tool you can transfer quickly)
Hands-on 3D printing experience
Currently pursuing or recently completed a degree in Mechanical Engineering (or equivalent hands-on experience)
A great attitude, strong work ethic, and eagerness to learn and adapt

Nice to have

Design & analysis

GD&T (geometric dimensioning & tolerancing) and detailed, well-organized engineering drawings
FEA / simulation for stress, thermal, or motion (e.g., Fusion 360 or SolidWorks Simulation)
Material knowledge across plastics (PLA, ABS, PETG, nylon) and metals (aluminum, steel), and processes like injection molding or sheet metal
Rendering and visualization for product shots and pitches (e.g., KeyShot)

3D printing

Bambu Lab printers and slicers like Orca Slicer, Bambu Studio, Cura, or PrusaSlicer
Both FDM and SLA (resin) printing

CNC & fabrication

CAM and CNC machining (Fusion 360 CAM, Mastercam, or HSMWorks)
CNC routing with VCarve, and an understanding of CNC mills and routers
Laser cutting/engraving (e.g., LightBurn), and comfort with shop measurement tools like calipers and micrometers

Also a plus

Personal builds — maker projects, robotics, competitions, side projects (we love to see them)
Basic electronics or mechatronics (e.g., Arduino) and familiarity with BOMs and production workflows

Pay: $25.00 - $30.00 per hour

Work Location: In person

Quick Apply

Refine Your Search

engineering intern jobs in st. louis mo

Mechanical Engineering Intern

Civil Engineering Intern

Performance Engineer Intern, Systems Software- Fall 2026

Engineering Intern

Mechanical Intern

IT Intern - Data Architecture

Network, Security, and Information Engineer Associate Intern

Intern - IT/RPA Automation

Engineering Intern - Transmission Line

Intern Engineer - Summer 2027 - Central Division (For Current/Former HNTB Interns Only)

Electrical Intern

MECHANICAL ENGINEERING INTERN (Fall Semester Position)

Kids STEM Instructor: Afterschool, Weekend, & Summer Camp + Internship

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