Top 93 Aerospace engineering intern Jobs in Longmont Co

Test Engineering Intern (Spring)
H3X Technologies —Louisville, CO
- $23 - $37 an hour
- Full-time
- Assembly
- Communication skills
- Entry level
- Relocation assistance
- Flexible schedule
2d
Optical Engineering Intern
Beyond Photonics LLC —Boulder, CO
- $20 - $35 an hour
- Microsoft Excel
- Bachelor of Science
- System design
- Health insurance
- Dental insurance
Quick Apply
13d
Electromagnetics Engineering Intern (Spring)
H3X Technologies —Louisville, CO
- $23 - $37 an hour
- Full-time
- Bachelor of Science
- Laboratory experience
- Analysis skills
- Relocation assistance
- Flexible schedule
2d
Power Electronics Engineering Intern (Spring)
H3X Technologies —Louisville, CO
- $23 - $37 an hour
- Full-time
- Bachelor of Science
- Software development
- Electrical Engineering
- Relocation assistance
- Flexible schedule
2d
Mechanical Design Engineer Intern (Spring)
H3X Technologies —Louisville, CO
- $23 - $37 an hour
- Full-time
- Communication skills
- Entry level
- Relocation assistance
- Flexible schedule
2d
Advanced Manufacturing Engineering Intern (Spring)
H3X Technologies —Louisville, CO
- $23 - $37 an hour
- Full-time
- Communication skills
- Entry level
- Relocation assistance
- Flexible schedule
2d
Staff Loads & Dynamics Analysis Engineer
Ursa Major —Berthoud, CO
- $140,000 - $170,000 a year
- Full-time
- Remote
- Bachelor of Science
- 8 years
- Analysis skills
- Paid parental leave
- Health savings account
Quick Apply
Test Engineer
Ursa Major —Berthoud, CO
- $75,000 - $115,000 a year
- Full-time
- Engineering
- Data analysis skills
- System design
- Paid parental leave
- Health savings account
Quick Apply
Staff Structural Analyst
Ursa Major —Berthoud, CO
- $140,000 - $175,000 a year
- Full-time
- Remote
- Analysis skills
- Doctor of Philosophy
- Mentoring
- Paid parental leave
- Health savings account
Quick Apply
22h
Development Technician, Inerts
Ursa Major —Berthoud, CO
- $25 - $30 an hour
- Full-time
- Mid-level
- Forklift
- Ability to lift 50 pounds
- Paid parental leave
- Health savings account
Structural Analyst II
Ursa Major —Boulder, CO
- $89,000 - $112,000 a year
- Full-time
- Data analysis skills
- Mid-level
- 3 years
- Paid parental leave
- Health savings account
Quick Apply
2d
Senior Development Technician, Inerts
Ursa Major —Berthoud, CO
- $35 - $44 an hour
- Full-time
- 5 years
- Mentoring
- Senior level
- Paid parental leave
- Health savings account
Propellant Development Engineer II
Ursa Major —Berthoud, CO
- $90,000 - $112,000 a year
- Full-time
- Mid-level
- Master's degree
- Analysis skills
- Paid parental leave
- Health savings account
Quick Apply
2d
Fluids Analyst II
Ursa Major —Berthoud, CO
- $89,000 - $112,000 a year
- Full-time
- Data analysis skills
- Mid-level
- Master's degree
- Paid parental leave
- Health savings account
Quick Apply
2d
Staff GNC Analysis Engineer
Ursa Major —Berthoud, CO
- $135,000 - $170,000 a year
- Full-time
- Remote
- Computer science
- Computer Science
- Data analysis skills
- Paid parental leave
- Health savings account
Quick Apply
Liquids Test Technician II
Ursa Major —Berthoud, CO
- $29.00 - $36.50 an hour
- Full-time
- CAD
- Engineering
- ERP systems
- Paid parental leave
- Health savings account
Quick Apply
Vice President, Engineering
Ursa Major —Berthoud, CO
- $240,000 - $300,000 a year
- Full-time
- Agile
- Senior level
- Leadership
- Paid parental leave
- Health savings account
Quick Apply
Propulsion Engineer, Fluid & Mechanical Systems
Ursa Major —Berthoud, CO
- $80,000 - $100,000 a year
- Full-time
- Engineering
- Mid-level
- Analysis skills
- Paid parental leave
- Health savings account
Quick Apply
9d
Propulsion Engineer, Combusion Devices
Ursa Major —Berthoud, CO
- $80,000 - $100,000 a year
- Full-time
- Mid-level
- Analysis skills
- Computer skills
- Paid parental leave
- Health savings account
Quick Apply
9d
Staff Design Engineer - Solid Missile Systems
Ursa Major —Berthoud, CO
- $145,000 - $180,000 a year
- Full-time
- 7 years
- Data analysis skills
- Master's degree
- Paid parental leave
- Health savings account

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Test Engineering Intern (Spring)

H3X Technologies -
Louisville, CO

Apply Now

Job Details

Full-time
$23 - $37 an hour
2 days ago

Benefits

Relocation assistance
Flexible schedule

Qualifications

Diagnostic test interpretation
Diagnostic result interpretation
Defect resolution root cause analysis
Requirements specification
Requirements design
Safety training program participation as safety practice
Performance testing in mechanical engineering
Defect analysis
Supply chain
Mechanical Engineering
CAD design (engineering design task)
Assembly
Electrical motors
System validation
Requirements analysis
Design engineering
Hazard identification and correction
Prototype creation
Product design
Test Execution (Quality assurance practices)
Occupational safety risk assessments
Experience in a research and development laboratory environment
Root cause analysis
Test analysis
Research & development
Mechanical product validation projects
Occupational safety program implementation
Prototypes
Communication skills
Entry level

Full Job Description

About H3X Technologies

H3X is building America's advanced electric motor company, powering next-generation platforms in aerospace, defense, and marine. Our integrated motor drives deliver 12+ kW/kg, roughly 3x the power density of competing solutions. We're now scaling to megawatt-class systems, with customers working on everything from supersonic aircraft to turbine power generation for AI datacenters.

Our team brings together engineers and operators from aerospace, defense, and motorsports, with deep expertise in electric machines, power electronics, material science, and advanced manufacturing. We're a small, fast-moving team doing hard engineering that matters, and we're looking for people who want to do the best work of their careers alongside us.

About the role

H3X is looking to hire a test engineering intern this to support R&D and production testing across the HPDM product line. This is not an ordinary internship. You will be given the full responsibility of a test engineer. The engineering team is intentionally small and operates at a very fast pace. A high degree of self-motivation and responsibility is required as you will be given significant freedom and will be directly responsible for your parts. We are looking for a full time Spring Intern, but also have availability for Summer 2027 and extended Co-Op positions.

What you will do:

Requirements/Concept
- Establish and document requirements to fulfill testing equipment design needs
- Conceptualize test equipment designs
- Gather and consolidate requirements for R&D test suites in the form of test plans
Design and Analysis
- Design parts and assemblies utilizing SolidWorks
Prototype and Manufacturing
- Compile complete Bills of Materials
- Provide technical supply chain support for sourcing hardware
- Work with technicians and test engineers to build initial prototypes
- Test prototype equipment for verification
Testing and Validation
- Create a test plan and checklist to validate product design targets
- Support testing execution and characterization of new designs
- Interpret test results, identify root-cause of issues, and make design recommendations to meet the highest level of reliability and performance
Integration
- Support complete system tests
Other
- Identify workplace hazards and implement safe processes
- Maintain testing and production equipment where necessary

What we are looking for:

Pursuing a Bachelor’s or Graduate Degree in Mechanical Engineering or similar
GPA of 3.0 or higher
Hands-on experience assembling mechanical systems
Hands-on experience with product testing
SolidWorks proficient (or similar)
Excellent written and verbal communication
Exceptional understanding of fundamentals
Action biased, results-driven mentality
Willingness to learn quickly

Nice to Have Experience:

Experience with dynamometer testing
Experience with electric motors and/or inverter drives
Experience with data processing

Compensation & Benefits

Salary/Hourly Compensation Range: $23 - $37/hr based on school level & experience
Flexible hours (deliverable-based goals)
Relocation package
Monthly company events
Friday Team Lunches

Why H3X

Joining H3X means working on hard, meaningful problems with a skunkworks-style team that's laser-focused on building exceptional products. We're deeply vertically integrated and have a very tight design-build-test loop, which lets us move from concept to hardware at unmatched speed. We've gone from idea to shipping product in less than two months.

We're a small, highly skilled team where everyone carries real responsibility and shares an extreme ownership mentality. We stay focused on the critical path, keep bureaucracy to a minimum, and structure everything around delivering results. You'll learn and grow faster here than you would anywhere else.

You'll work alongside world-class engineers and builders who are pioneering electric motor technology at scale on some of the coolest programs in the industry, from supersonic aircraft to power generation for AI datacenters. If you want your contributions to be visible and your work to directly shape American reindustrialization, you'll feel at home here.

Our Values

Be Relentless Never give up, persevere until the job is done. Run toward problems, not away from them. Grit is key.

Gain insight through humility Approach every challenge with a learner’s mindset. Stay open to feedback, listen to others, and deepen your understanding through self-awareness. Put your ego aside and seek the truth in every discussion, especially when leading others.

Distill & Simplify Eliminate unjustified complexity and simplify wherever possible, whether in requirements, design, or execution. Use first principles thinking to distill every problem to its essence. Less is more.

Find your flow Engage fully and work with intention. Find the rhythm and deep focus that lets you do your best work. Discover your Ikigai - where your strengths, passions, and purpose meet and drive your personal fulfillment and team success. That is when the magic happens.

SEND (Solve, Evolve, Nail It, Deliver) Devise the best solution with the information at hand, test it, learn from it, and iterate quickly until you nail it. Nothing works perfectly the first time, but you should never hit the same issue twice. Stay laser-focused on solving customer problems and delivering solutions that create real value.

Equal Opportunity Employer

H3X is an equal opportunity-affirmative action employer and considers all qualified applicants for employment based on business needs, job requirements and individual qualifications, without regard to race, color, religion, sex, age, disability, sexual orientation, gender identity or expression, marital status, past or present military service or any other status protected by the laws or regulations in the locations where we operate.

Apply Now

Refine Your Search

aerospace engineering intern jobs in longmont co

Test Engineering Intern (Spring)

Optical Engineering Intern

Electromagnetics Engineering Intern (Spring)

Power Electronics Engineering Intern (Spring)

Mechanical Design Engineer Intern (Spring)

Advanced Manufacturing Engineering Intern (Spring)

Staff Loads & Dynamics Analysis Engineer

Test Engineer

Staff Structural Analyst

Development Technician, Inerts

Structural Analyst II

Senior Development Technician, Inerts

Propellant Development Engineer II

Fluids Analyst II

Staff GNC Analysis Engineer

Liquids Test Technician II

Vice President, Engineering

Propulsion Engineer, Fluid & Mechanical Systems

Propulsion Engineer, Combusion Devices

Staff Design Engineer - Solid Missile Systems

I want to receive the latest job alert for aerospace engineering intern in longmont co

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