Mechanical engineering internships in California
78 open postings from 56 employers. Astranis (6), Stantec (4) and RTX (3) have posted the most. 45 of them name a term, most often Summer 2027 (29) and Spring 2027 (8). The most are in San Francisco, CA (18), Los Angeles, CA (12) and San Jose, CA (7). All of them are in hardware. A posting is listed here when its own title says so, whatever role it is filed under. The list is read daily from company career pages and public internship lists, so closed roles drop off.
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- Mechanical Engineering Intern - Buildings (Summer 2027)StantecSan Francisco, CASummer 2027
- Mechanical Engineering Intern - Buildings (Summer 2027)StantecSan Diego, CASummer 2027
- Mechanical Engineering Intern - Buildings (Summer 2027)StantecSacramento, CASummer 2027
- Mechanical Engineering Intern - Buildings (Summer 2027)StantecLos Angeles, CASummer 2027
- 2026 Mechanical Engineer Intern - Manhattan Beach CANorthrop GrummanManhattan Beach, CA
- Mechanical Engineering Intern (Summer 2027)RTXEl Segundo, CASummer 2027
- Mechanical Engineer Intern (Summer 2027)Scout AISunnyvale, CASummer 202710 weeks$45–$65 per hour
- Mechanical Design Engineering InternHPERoseville, CA
- Hardware Engineering Intern (Mechanical & Electrical)Parallel SystemsLos Angeles, CASummer 2027
- Mechanical Engineer Intern (Summer 2027)RTXGoleta, CASummer 2027
- Mechanical Engineer Intern (Summer 2027)RTXEl Segundo, CASummer 2027
- Internship - Mechanical EngineerLumentumSan Jose, CA
- Mechanical Solutions Architect InternAstera LabsSan Jose, CA
- Mechanical Engineering Co-op/Intern (Spring 2027)Multiply LabsSan Francisco, CASpring 2027
- Mechanical Engineering, Intern - Labs (Summer 2027)DoorDashOakland, CASummer 2027
- Intern - Mechanical Engineer - Summer 2027Commonwealth Fusion SystemsMilpitas, CASummer 2027$25–$38/hr
- Intern, Mechanical EngineerSK Hynix Memory SolutionSan Jose, CA6 months
- AV Mechanical Engineering Intern - Spring 2027 - Santa Clara, CANissan GlobalSanta Clara, CASpring 2027
- Mechanical Engineer - Winter 2026 InternshipMedraSan Francisco, CAWinter 2026
- 2027 Summer Intern - Mechanical Engineer - PhD, (Santa Clara)Applied MaterialsSanta Clara, CASummer 2027
- 2027 Summer Intern - Mechanical Engineer - BS/MS Degree, (Santa Clara)Applied MaterialsSanta Clara, CASummer 2027
- Intern - Mechatronics EngineerHuman Computer LabSan Francisco, CA
- Mechanical Engineering Intern - RecreationalArcTorrance, CA
- Mechanical Engineering InternAeroVironmentPetaluma, CA
- Mechanical Engineering Intern - PowertrainArcTorrance, CA
- Mechatronics Engineering InternRellingSan Francisco, CA
- Robotics Mechanical Engineering Intern (Fall/Winter 2026)RoboForceMilpitas, CAFall 2026
- Mechanical Engineer I (Intern) - United StatesCiscoSan Jose, CA
- Mechanical Engineering InternCoStar GroupSunnyvale, CA
- Mechanical Engineer Intern (Aerospace) - Summer 2027SensataThousand Oaks, CASummer 2027
- Mechanical Engineer Intern (Aerospace) - Summer 2027SensataVista, CASummer 2027
- Mechatronics/Systems Engineering InternshipKLAMilpitas, CA
- Mechatronics Engineering InternshipKLAMilpitas, CA
- Mechanical Engineering Intern (Summer 2027)Zurn Elkay Water SolutionsPaso Robles, CASummer 2027
- Mechanical Engineering Co-op Full Time Intern Jan - June 2027iRhythm TechnologiesSan Francisco, CA
- Mechanical Engineering Co-Op (Fixed Term)Blue OriginLos Angeles, CA
- WED - 2027 New Grad Mechanical & Fire Protection Engineer I (For Current & Recent HNTB Interns Only)HNTBOakland, CA
- 2027 Mechanical Engineering InternVoyager TechnologiesLong Beach, CA
- Summer 2027 Engineering Internship, MechanicalMach IndustriesHuntington Beach, CASummer 202712 weeks
- Mechanical Engineering InternReflect OrbitalHawthorne, CA$27–$31 per hour
- Advanced 3D Printing Mechanical Engineering InternBracket BotSan Francisco, CA
- Space Mechanical Design Engineering Intern - Summer 2027Antares NuclearLos Angeles, CASummer 2027$34 per hour
- Mechatronics InternPhysical IntelligenceSan Francisco, CA
- Mechanical Engineering Intern Summer 2027Rocket Lab USALong Beach, CASummer 2027
- Mechanical Engineering Intern Spring 2027Rocket Lab USALong Beach, CASpring 2027
- Emerging Talent - Mechanical/Aerospace Engineering InternshipVASTLong Beach, CA12 weeks
- Mechanical Engineering Design Intern - Summer 2027Antares NuclearLos Angeles, CASummer 2027$34 per hour
- Summer 2027 Internship- Mechanical EngineeringPacific FusionSan Leandro, CASummer 2027
- Mechanical Engineering Internship - Winter/Spring 2027 (Early Interest)PykaAlameda, CAWinter 2027
- Mechanical Engineering Intern, Summer 2027Michael Baker InternationalSan Diego, CASummer 2027
Mechanical engineering internships in California by employer
Mechanical engineering internships in California by city
Mechanical engineering internships in California by term
Other fields in California
- Engineering 1174
- Software engineering 424
- AI and machine learning 351
- Research 230
- Hardware engineering 218
- Electrical engineering 94
- Robotics 89
- Aerospace engineering 54
- Product management 50
- Sales 49
- Data science 47
- Cybersecurity 45
- Business 39
- Supply chain and logistics 39
- Cloud and DevOps 33
- Energy 32
- Marketing 30
- Data analyst 29
- Data engineering 29
- Manufacturing engineering 28
- Tax 27
- UX and product design 21
- Audit 17
- IT 15
- Project management 15
- Biology and life sciences 14
- Environment and sustainability 14
- Civil engineering 12
- Physics 8
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