Mechanical, Civil & Aerospace Internships in California

274 open mechanical, civil & aerospace internships in california from 74 companies, 165 added in the last 7 days. 58% list pay; the median posted rate is $29/hr (middle half: $28–$35/hr). Most openings: Rocket Lab Corporation (25), Astranis (20), Blue Origin (16), Varda Space Industries (13).1 is remote-friendly.

Updated Oct 19, 2026 from employer career pages · newest posting Oct 16, 2026.

AM
Summer 2027 Supply Chain Materials Project Manager Intern- Master's (Santa Clara, CA)
Applied Materials · Santa Clara, CA

Internship Summer 2027

3 days ago
NG
2027 Intern - Guidance Navigation and Control Engineer
Northrop Grumman · San Diego, CA

Internship 2027$21.50–$39/hr

3 days ago
H
Civil Engineering Intern (Summer 2027)
HNTB · Oakland, CA +1

Internship Summer 2027$26.34–$39.50/hr

3 days ago
NB
Manufacturing Intern - Philly
Niagara Bottling · Philly, CA

Internship $24.10–$31.93/hr

3 days ago
NB
Manufacturing Intern - Rialto
Niagara Bottling · Rialto, CA

Internship $24.10–$31.93/hr

3 days ago
NB
Manufacturing Intern - Stockton 4
Niagara Bottling · Stockton 4 - Stockton, CA

Internship $24.10–$31.93/hr

3 days ago
R
Quality Engineering Intern (Summer 2027)
RTX · Fairfield, CA

Internship Summer 2027

4 days ago
S
Process Engineering Intern - Summer 2027
Skydio · San Mateo, CA

Internship Summer 2027

4 days ago
AI
2027 Flight Test Engineer Intern
Anduril Industries · Costa Mesa, CA

Internship 2027$32–$40/hr

4 days ago
S
Manufacturing Software Engineer Intern - Winter 2027
Skydio · San Mateo, CA

Internship Winter 2027

4 days ago
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R
Electro-Optics Systems Engineer Intern (Summer 2027)
RTX · El Segundo, CA

Internship Summer 2027

5 days ago
R
Electro-Optics Systems Engineer Intern (Summer 2027)
RTX · Goleta, CA

Internship Summer 2027

5 days ago
GM
2027 Intern - Product Management, Vehicle Autonomy (MS or MBA)
General Motors · Sunnyvale, CA

Internship 2027$9,400–$11k/mo

5 days ago
P
Intern – Systems Engineering (Sustaining & Design Controls) - San Diego, CA - Summer 2027
Philips · San Diego, CA

Internship Summer 2027$29–$36/hr

5 days ago
I
Structural Engineering Intern | San Francisco, CA
IMEG · San Francisco, CA

Internship Summer 2027$22–$24/hr

5 days ago
NG
AV Mechanical Engineering Intern - Spring 2027 - Santa Clara, CA
Nissan Global · Santa Clara, CA

Internship Spring 2027

5 days ago
C
Systems Engineering Execution Intern
Cubic · San Diego, CA

Internship $22–$26/hr

5 days ago
MS
Spacecraft Test Engineering Intern (Summer 2027)
Muon Space · San Jose, CA +1

Internship Summer 2027

5 days ago
KC
Precision Motion Control Intern
KLA Corporation · Milpitas, CA

Internship

6 days ago
A
Summer 2027 Autonomy & Robotics Engineering Intern
AeroVironment · Simi Valley, CA +12

Internship Summer 2027

6 days ago
A
Summer 2027 Aeromechanical Engineering Intern
AeroVironment · Simi Valley, CA +16

Internship Summer 2027

6 days ago
M
Manufacturing Engineer - Technical Team Co-op Student
Magna · Brampton, CA

Internship $21.60–$26.46/hr

6 days ago
BO
Summer 2027 Structural & Mechanical Engineering Internship - Undergraduate
Blue Origin · Greater Seattle Area +5

Internship Summer 2027

6 days ago
BO
Summer 2027 Structural & Mechanical Systems Engineering Internship - Graduate
Blue Origin · Greater Seattle Area +5

Internship Summer 2027

6 days ago
MI
Manufacturing Engineer - Technical Team Co-op Student
Magna International · Brampton, CA

Internship $21.60–$26.46/hr

6 days ago
H
Intern Mechanical and Fire Protection Engineering (Summer 2027)
HNTB · Oakland, CA +1

Internship Summer 2027$26.34–$39.50/hr

6 days ago
AL
Analog/Mixed Signal System Test Engineer Intern
Astera Labs · San Jose, CA +1

Internship

6 days ago
B
Robotics Research Intern
Bosch · Sunnyvale, CA

Internship $48–$69/hr

6 days ago
N
NVIDIA 2027 Internships: Autonomous Vehicles and Robotics
NVIDIA · Santa Clara, CA

Internship 2027

7 days ago
N
PhD Research Intern, Robotics - Summer 2027
NVIDIA · Seattle, WA +1

Internship Summer 2027

7 days ago
ST
2027 Material & Process Engineering, Summer Intern
Solar Turbines · San Diego, CA

Internship 2027$26–$43/hr

7 days ago
LL
Materials Science Division Graduate Intern - Winter/Spring 2027
Lawrence Livermore National Laboratory (LLNL) · Livermore, CA

Internship Spring 2027$6,752–$8,201/mo

9 days ago
AM
Summer 2027 Industrial Engineer Intern- Master's (Santa Clara, CA)
Applied Materials · Santa Clara, CA

Internship Summer 2027

10 days ago
AM
2027 Summer Intern - Process Engineer - BS/MS Degree (Santa Clara, CA)
Applied Materials · Santa Clara, CA

Internship 2027

10 days ago
AM
2027 Summer Intern - Mechanical Engineer - BS/MS Degree, (Santa Clara)
Applied Materials · Santa Clara, CA

Internship 2027

10 days ago
AM
2027 Summer Intern - Mechanical Engineer - PhD, (Santa Clara)
Applied Materials · Santa Clara, CA

Internship 2027

10 days ago
AM
2027 Summer Intern - Process Engineer - PhD, (Santa Clara)
Applied Materials · Santa Clara, CA

Internship 2027

10 days ago
MP
Intern/Co-op - HES&S Environmental (Summer 2027)
Marathon Petroleum · Findlay, OH +18

Internship Summer 2027

10 days ago
MP
Intern/Co-op - HES&S Environmental (Fall 2027)
Marathon Petroleum · Findlay, OH +18

Internship Fall 2027

10 days ago
MP
Intern/Co-op - HES&S Environmental (Spring 2027)
Marathon Petroleum · Findlay, OH +18

Internship Spring 2027

10 days ago
A
Quality Engineer Intern
AeroVironment · Petaluma, CA

Internship

11 days ago
HP
Thermal Engineering Intern
Hewlett Packard Enterprise · Sunnyvale, CA

Internship $35–$41/hr

11 days ago
AB
Mechanical Engineering Intern - Recreational
Arc Boat Company · Torrance, CA +1

Internship

11 days ago
TW
Disneyland Quality Engineering Intern, Spring 2027
The Walt Disney Company · Anaheim, CA

Internship Spring 2027

12 days ago
A
Mechanical Engineering Intern
AeroVironment · Petaluma, CA

Internship

12 days ago
TA
2027 Space Vehicle and Ground Systems Undergraduate Intern
The Aerospace Corporation · El Segundo, CA +1

Internship 2027$26–$30/hr

12 days ago
MP
Refining Chemical Engineering Intern/Co-op Spring 2027
Marathon Petroleum · Findlay, OH +16

Internship Spring 2027$33.54–$42.45/hr

12 days ago
AI
2027 Systems Engineer Intern
Anduril Industries · Boston, MA +4

Internship 2027$32–$48/hr

13 days ago
TA
2027 Aerospace Returning Interns
The Aerospace Corporation · El Segundo, CA +9

Internship 2027$18–$48/hr

13 days ago
AI
2027 Quality & Test Engineer Intern
Anduril Industries · Ashville, OH +4

Internship 2027$32–$40/hr

13 days ago
AI
Winter 2027 Quality & Test Engineer Co-op
Anduril Industries · Ashville, OH +1

Internship Winter 2027$28–$40/hr

13 days ago
A
Manufacturing Intern
Atoms · San Francisco, CA +1

Internship

13 days ago
F
Manufacturing Engineering Intern (Spring 2027)
Freeform · Los Angeles, United States +1

Internship Spring 2027

13 days ago
F
Process Engineering Intern (Spring 2027)
Freeform · Los Angeles, United States +1

Internship Spring 2027

13 days ago
AB
Vehicle Controls Engineering Intern
Arc Boat Company · Torrance, CA +1

Internship

13 days ago
AB
Mechanical Engineering Intern - Powertrain
Arc Boat Company · Torrance, CA +1

Internship

13 days ago
J
Industrial Engineer Intern
Jabil · San Jose, CA

Internship $16–$32/hr

14 days ago
MS
Environmental Test Engineering Intern (Summer 2027)
Muon Space · San Jose, CA +1

Internship Summer 2027

16 days ago
MS
Industrial Engineering Intern (Summer 2027)
Muon Space · San Jose, CA +1

Internship Summer 2027

16 days ago
AI
2027 Industrial Engineer Intern
Anduril Industries · Ashville, OH +1

Internship 2027$28–$40/hr

16 days ago
R
Robotics Mechanical Engineering Intern (Fall/Winter 2026)
RoboForce · Milpitas, CA +1

Internship Winter 2026$6k–$6,500/mo

17 days ago
TW
Disneyland Resort Industrial Engineering Intern, Summer 2027
The Walt Disney Company · Anaheim, CA

Internship Summer 2027

17 days ago
TA
2027 Flight Loads Structural Dynamics Graduate Intern
The Aerospace Corporation · El Segundo, CA

Internship 2027$32–$48/hr

17 days ago
MI
Summer 2027 Engineering Internship, Manufacturing
Mach Industries · Huntington Beach, CA +1

Internship Summer 2027$30–$55/hr

17 days ago
VS
Flight Software Internship - Summer 2027
Varda Space Industries · El Segundo, CA

Internship Summer 2027

17 days ago
VS
Guidance, Navigation & Controls (GNC) Internship - Summer 2027
Varda Space Industries · El Segundo, CA

Internship Summer 2027

17 days ago
VS
Manufacturing Engineering Internship - Summer 2027
Varda Space Industries · El Segundo, CA

Internship Summer 2027

17 days ago
VS
Propulsion Engineering Internship - Summer 2027
Varda Space Industries · El Segundo, CA

Internship Summer 2027

17 days ago
VS
Vehicle Integration & Test Internship - Summer 2027
Varda Space Industries · El Segundo, CA

Internship Summer 2027

17 days ago
VS
Thermal Engineering Internship - Summer 2027
Varda Space Industries · El Segundo, CA

Internship Summer 2027

17 days ago
LL
Computational Chemistry Materials Science (CCMS) Graduate Intern - Summer 2027
Lawrence Livermore National Laboratory (LLNL) · Livermore, CA

Internship Summer 2027$6,752–$8,201/mo

18 days ago
LL
Materials and Chemistry Institute (MaCI) Graduate Intern - Summer 2027
Lawrence Livermore National Laboratory (LLNL) · Livermore, CA

Internship Summer 2027$6,752–$8,201/mo

18 days ago
LL
Materials and Chemistry Institute (MaCI) Undergraduate Intern - Summer 2027
Lawrence Livermore National Laboratory (LLNL) · Livermore, CA

Internship Summer 2027$23.26–$31.62/hr

18 days ago
LL
Materials Science Division Undergraduate Intern - Winter/Spring 2027
Lawrence Livermore National Laboratory (LLNL) · Livermore, CA

Internship Spring 2027$23.26–$31.62/hr

18 days ago
GM
2027 Summer Intern - Software Engineer, Autonomous Vehicle: Simulation
General Motors · Sunnyvale, CA

Internship 2027$8,100–$9,600/mo

18 days ago
C
Mechanical Engineer I (Intern) - United States
Cisco · San Jose, CA

Internship

18 days ago
A
Automation & Controls Engineering Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

18 days ago
A
Automation & Controls Engineering Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

18 days ago
BP
Mechanical Engineering Intern
Base Power · Austin, TX +1

Internship

18 days ago
MS
Flight Software Engineering Intern (Summer 2027)
Muon Space · San Jose, CA +1

Internship Summer 2027

18 days ago
MS
Thermal Engineering Intern (Summer 2027)
Muon Space · San Jose, CA +1

Internship Summer 2027

18 days ago
MS
Quality Engineering Intern (Summer 2027)
Muon Space · San Jose, CA +1

Internship Summer 2027

18 days ago
KC
Mechatronics/Systems Engineering Internship
KLA Corporation · Milpitas, CA

Internship $26–$50/hr

19 days ago
M
Test Engineering Intern, MS - Summer 2027
Marvell · Santa Clara, CA

Internship Summer 2027

19 days ago
IC
Co-op, Manufacturing: January - June 2027 (Onsite)
Insulet Corporation · Irvine, CA

Internship 2027$25–$34/hr

19 days ago
I
Civil Engineering Intern | Ontario, CA
IMEG · Ontario, CA +3

Internship Summer 2027$22–$24/hr

19 days ago
I
Structural Engineering Intern | Idaho Falls, ID
IMEG · Idaho Falls, ID +2

Internship Summer 2027$22–$24/hr

19 days ago
M
Systems Engineering Intern, Fall/Winter 2026
Mill · San Bruno, CA +1

Internship Winter 2026$35–$45/hr

19 days ago
F
Manufacturing Engineering Intern, CNC Machining (Summer 2027)
Freeform · Los Angeles, United States +1

Internship Summer 2027

19 days ago
E
Material Quality Engineering Co-Op
Entegris · San Luis Obispo, CA

Internship Spring 2027$20–$30/hr

20 days ago
VT
2027 Systems Engineering Intern
Voyager Technologies, Inc. · Long Beach +3

Internship 2027$23.50–$30/hr

20 days ago
VT
2027 Mechanical Engineering Intern
Voyager Technologies, Inc. · Long Beach +5

Internship 2027$23.50–$30/hr

20 days ago
S
Summer 2027 Internship - Quality Engineering - California
Stryker · San Jose, CA +1

Internship Summer 2027

21 days ago
H
Construction Project & Program Management Intern (Summer 2027)
HNTB · San Jose, CA

Internship Summer 2027$26.34–$39.50/hr

21 days ago
C
Summer 2027 - Systems Engineering Internship
CesiumAstro · El Segundo, CA

Internship Summer 2027

23 days ago
MI
Summer 2027 Engineering Internship, Mechanical
Mach Industries · Huntington Beach, CA +3

Internship Summer 2027$30–$55/hr

23 days ago
MI
Summer 2027 Engineering Internship, Aerospace
Mach Industries · Huntington Beach, CA +1

Internship Summer 2027$30–$55/hr

23 days ago
M
Intern, Systems Engineering
Moog · Torrance, CA

Internship $28–$35/hr

24 days ago
TA
2027 Space Vehicle and Ground Systems Graduate Intern
The Aerospace Corporation · El Segundo, CA +1

Internship 2027$32–$38/hr

24 days ago
TA
2027 Propulsion Engineering Graduate Intern
The Aerospace Corporation · El Segundo, CA

Internship 2027$32–$38/hr

24 days ago
A
Thermal Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

24 days ago
A
Thermal Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

24 days ago
A
Supplier Quality Engineer Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

24 days ago
RO
Mechanical Engineering Intern
Reflect Orbital · Hawthorne, CA

Internship $27–$31/hr

24 days ago
M
Quality Engineering Co-op Student (Winter Term, 23 Month Contract)
Magna · Newmarket, CA

Internship $19.45–$24.89/hr

25 days ago
MI
Quality Engineering Co-op Student (Winter Term, 23 Month Contract)
Magna International · Newmarket, CA

Internship $19.45–$24.89/hr

25 days ago
IT
System Test Engineer Co-Op Full Time Intern Jan-June 2027
iRhythm Technologies · San Francisco, CA

Internship 2027$25–$35/hr

25 days ago
IT
Mechanical Engineering Co-op Full Time Intern Jan - June 2027
iRhythm Technologies · San Francisco, CA

Internship 2027$25–$35/hr

25 days ago
A
Propulsion Engineer Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

25 days ago
A
Propulsion Engineer Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

25 days ago
A
Propulsion Test Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

25 days ago
TA
2027 Chemical Propulsion Graduate Intern
The Aerospace Corporation · El Segundo, CA

Internship 2027$32–$38/hr

26 days ago
TA
2027 Emerging Missions Flight Dynamics Graduate Intern
The Aerospace Corporation · Colorado Springs, CO +3

Internship 2027$32–$48/hr

26 days ago
A
Undergrad Co-op – MCS Manufacturing Associate
Amgen · Thousand Oaks, CA

Internship

26 days ago
A
Flight Software Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

26 days ago
A
Flight Software Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

26 days ago
A
Guidance, Navigation, and Control Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

26 days ago
GI
Civil Engineering Intern
Global Infrastructure · CA | ON | Toronto - 3381 Steeles Avenue East

Internship $20–$30/hr

27 days ago
A
Assembly, Integration, and Test Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

27 days ago
A
Assembly, Integration, and Test Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

27 days ago
RL
Thermal Engineering Intern Summer 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Summer 2027$28/hr

27 days ago
RL
Thermal Engineering Intern Spring 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Spring 2027$28/hr

27 days ago
A
Aeromechanical Engineering Intern
AeroVironment · Moorpark, CA

Internship

28 days ago
A
Summer 2027 Autonomy & Robotics Engineering Intern
AeroVironment · Moorpark, CA

Internship Summer 2027

28 days ago
I
Structural Engineering Intern | Pasadena, CA
IMEG · Pasadena, CA

Internship Summer 2027$22–$24/hr

28 days ago
I
Mechanical Engineering Intern | Anaheim, CA
IMEG · Anaheim, CA

Internship Summer 2027$22–$24/hr

28 days ago
ZE
Mechanical Engineering Intern (Summer 2027)
Zurn Elkay Water Solutions · Paso Robles, CA

Internship Summer 2027$20–$25/hr

28 days ago
A
Harness Manufacturing Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

1 month ago
A
Environmental Test Engineer Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

1 month ago
A
Propulsion Manufacturing Intern (Summer 2027)
Astranis · San Francisco, United States +1

Internship Summer 2027$29/hr

1 month ago
A
Propulsion Manufacturing Intern (Winter 2027)
Astranis · San Francisco, United States +1

Internship Winter 2027$29/hr

1 month ago
1
Internship - CNC Machine Park
1X · Hayward, CA

Internship $30/hr

1 month ago
RL
Test Engineering Intern - Manufacturing Spring 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Spring 2027$28/hr

1 month ago
RL
Systems Engineering Intern Summer 2027
Rocket Lab Corporation · Pasadena, CA +1

Internship Summer 2027$28/hr

1 month ago
RL
Propulsion Analyst Intern Summer 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Summer 2027$28/hr

1 month ago
RL
Propulsion Analyst Intern Spring 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Spring 2027$28/hr

1 month ago
RL
Manufacturing Engineering Intern Summer 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Summer 2027$28/hr

1 month ago
RL
Manufacturing Engineering Intern Spring 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Spring 2027$28/hr

1 month ago
A
Quality Engineering Intern
AeroVironment · Simi Valley, CA +12

Internship

1 month ago
S
Mechanical Engineer Intern (Aerospace) - Summer 2027
Sensata · Thousand Oaks, CA

Internship Summer 2027

1 month ago
S
Mechanical Engineer Intern (Aerospace) - Summer 2027
Sensata · Vista, CA

Internship Summer 2027

1 month ago
AI
2027 Flight Software Engineer Intern
Anduril Industries · Costa Mesa, CA

Internship 2027$42–$60/hr

1 month ago
AI
Winter 2027 Propulsion Engineer Co-op
Anduril Industries · Costa Mesa, CA

Internship Winter 2027$34–$50/hr

1 month ago
MP
Refining Chemical Engineering Intern/Co-op Summer 2027
Marathon Petroleum · Findlay, OH +16

Internship Summer 2027$33.54–$42.45/hr

1 month ago
MP
Refining Chemical Engineering Intern/Co-op Fall 2027
Marathon Petroleum · Findlay, OH +16

Internship Fall 2027$33.54–$42.45/hr

1 month ago
M
Systems Engineering Intern, Winter 2026
Mill · San Bruno, CA +1

Internship Winter 2026$35–$45/hr

1 month ago
1
Internship - Manufacturing Engineering
1X · San Carlos, CA

Internship $35/hr

1 month ago
RL
Mechanical Engineering Intern Summer 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Summer 2027$28/hr

1 month ago
RL
Mechanical Engineering Intern Spring 2027
Rocket Lab Corporation · Long Beach, CA +1

Internship Spring 2027$28/hr

1 month ago
I
Mechanical Engineering Intern | Ontario, CA
IMEG · Ontario, CA

Internship Summer 2027$22–$24/hr

1 month ago

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