https://internscout.org/internships/mechanical-engineering/california/ Mechanical Engineering internships in California: new listings as InternScout finds them. Check each posting on the employer's site before applying. en-us Sun, 27 Sep 2026 02:50:47 +0000 180 https://jobs.keysight.com/jobs/54275internscout-4f30cb40a4c506e3Sat, 26 Sep 2026 02:54:49 +0000Santa Rosa, California · Summer. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://job-boards.greenhouse.io/astranis/jobs/4704820006internscout-b1313c98eb083681Fri, 25 Sep 2026 02:52:21 +0000San Francisco · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://job-boards.greenhouse.io/astranis/jobs/4704818006internscout-d8267b6d745a4b00Fri, 25 Sep 2026 02:52:21 +0000San Francisco · Winter 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://mpc.wd1.myworkdayjobs.com/MPCCareers/job/Findlay-Ohio/Intern-Co-op---Midstream-Logistics-and-Storage-Mechanical-Civil-Electrical-Engineering--Spring-2027-_00024207internscout-78157753e3debb47Thu, 24 Sep 2026 21:18:12 +0000La Palma, California +3 · Spring 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://irhythmtech.wd5.myworkdayjobs.com/irhythm/job/Orange-County-CA/Lifecycle-Engineering-Co-Op-Full-Time-Intern-Jan-June-2027_JR1784-1internscout-1e598b5dc833e55eThu, 24 Sep 2026 20:49:55 +0000Orange County, CA · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://irhythmtech.wd5.myworkdayjobs.com/irhythm/job/San-Francisco-CA/Mechanical-Engineering-Co-op-Full-Time-Intern-Jan---June-2027_JR1766internscout-6b687942e7eac23fThu, 24 Sep 2026 20:49:55 +0000San Francisco, CA. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://jobs.ashbyhq.com/bracket-bot/2746e028-bde6-4a32-a061-ffe7e881f4db/applicationinternscout-425aabba71195d35Thu, 24 Sep 2026 02:35:43 +0000San Francisco +1. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://jobs.ashbyhq.com/reflect-orbital/ed0c926a-9a52-4c84-8488-2552b1f0cca6/applicationinternscout-7227604d69b5515bThu, 24 Sep 2026 02:35:43 +0000Hawthorne, CA +1. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://amgen.wd1.myworkdayjobs.com/careers/job/US---California---Thousand-Oaks/Undergrad-Co-op---MCS-Manufacturing-Associate_R-256774internscout-f284a1606fe4b7c3Wed, 23 Sep 2026 16:09:04 +0000US - California - Thousand Oaks. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://jobs.ashbyhq.com/vital-lyfe/a6f371dc-0ff2-42c3-84a7-6d69e5cd6f08/applicationinternscout-00d8bfbc96af1b02Wed, 23 Sep 2026 02:46:42 +0000Los Angeles, California · Spring 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://jobs.l3harris.com/job/Canoga-Park-Mechanical-Design-Engineering-Intern-CA-91311/1432676400/internscout-2c5f49bdc2429c96Tue, 22 Sep 2026 21:05:12 +0000Canoga Park, CA +1. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://jobs.l3harris.com/job/Canoga-Park-Intern%2C-Mechanical-Engineer-1-CA-91311/1432675500/internscout-4da128c474b6b436Tue, 22 Sep 2026 21:05:12 +0000Canoga Park, CA. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://elkay.wd1.myworkdayjobs.com/Elkay_External/job/Paso-Robles-CA/Mechanical-Engineering-Intern--Summer-2027-_REQ-020111internscout-1de851d73021116dTue, 22 Sep 2026 02:44:25 +0000Paso Robles, CA · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://job-boards.greenhouse.io/rocketlab/jobs/8000951003internscout-44a6e04e5dc1d5baTue, 22 Sep 2026 02:44:25 +0000Long Beach, CA · Spring 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://job-boards.greenhouse.io/rocketlab/jobs/8000958003internscout-b8abb95a8f2f6644Tue, 22 Sep 2026 02:44:25 +0000Long Beach, CA · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://avav.wd1.myworkdayjobs.com/avav/job/Moorpark-CA/Aeromechanical-Engineering-Intern_8787internscout-eb9eb0457652ada1Tue, 22 Sep 2026 02:44:25 +0000Moorpark, CA +1. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://job-boards.greenhouse.io/astranis/jobs/4705648006internscout-0879421a09cc3d34Sat, 19 Sep 2026 01:19:53 +0000San Francisco · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://stryker.wd1.myworkdayjobs.com/StrykerCareers/job/San-Jose-California/Summer-2027-Internship---Mechanical-Engineering---California_R572600internscout-365d2bcbd9b0c4e1Sat, 19 Sep 2026 01:19:53 +0000San Jose, California +1 · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://job-boards.greenhouse.io/astranis/jobs/4705255006internscout-7591e75c01529d22Sat, 19 Sep 2026 01:19:53 +0000San Francisco · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://job-boards.greenhouse.io/astranis/jobs/4705649006internscout-fcc01cf931c1241cSat, 19 Sep 2026 01:19:53 +0000San Francisco · Winter 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://qualcomm.eightfold.ai/careers/job/446720741704internscout-0260da1849b36ce6Fri, 18 Sep 2026 20:29:02 +0000San Diego, CA +2 · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://avav.wd1.myworkdayjobs.com/avav/job/Simi-Valley-CA/Summer-2027-Aeromechanical-Engineering-Intern_8387internscout-4ea71f42e8738febFri, 18 Sep 2026 10:30:23 +0000Simi Valley, CA +17 · Summer 2027. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://peakenergy.com/get-in-touch/careers/jobs?job_id=5210986007&gh_jid=5210986007internscout-273a9c2f6ea958c3Fri, 18 Sep 2026 09:54:55 +0000Burlingame, California. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://peakenergy.com/get-in-touch/careers/jobs?job_id=4949210007&gh_jid=4949210007internscout-ecea78e3921d4858Fri, 18 Sep 2026 09:54:55 +0000Burlingame, California · Fall 2026. More like this: https://internscout.org/internships/mechanical-engineering/california/ https://gilead.wd1.myworkdayjobs.com/gileadcareers/job/United-States---California---Foster-City/Intern---PDM---Manufacturing-Strategy---Operations_R0054574internscout-08f8700f8f134e4eFri, 18 Sep 2026 09:25:22 +0000United States - California - Foster City. More like this: https://internscout.org/internships/mechanical-engineering/california/