Engineering internships in California (2026)

377 open Engineering internships in California.

377+ open roles ~$6k/mo avg Rocketlab, NVIDIA, Entegris, RTX, Boeing Japan Kabushiki Kaisha

RT

Chemistry/Materials Engineering Internship (Summer 2027)(Onsite)

Rtx

US-CA-FAIRFIELD-3530 ~ 3530 Branscombe Rd ~ BRANSCOMBE · 5h ago

$42k–$88k/yr Engineering Onsite materials science chemistry

Intern, Fire Protection Engineering Top Pick

Jensenhughes

San Diego, California, United States · 5h ago

$20–$30/hr Engineering Onsite egress analyses

CW

Automation Engineer Apprentice

Cw

Client Site - USA - CA - Eastvale - 4950 GOODMAN WAY · Sep 18

Engineering Onsite plc ladder_logic

Automation Engineer Apprentice

Cushman & Wakefield

Client Site - USA - CA - Eastvale - 4950 GOODMAN WAY · Sep 18

Engineering Onsite plc ladder logic

Mission Analysis Engineer (Entry level) - Millennium Space Systems

Boeing Japan Kabushiki Kaisha

USA - El Segundo, CA · Sep 18

$80k–$148k/yr Engineering Onsite matlab simulink

Junior Reliability Engineer

Jll

Rosemead, CA · Sep 18

$80k–$90k/yr Engineering Onsite rcm cbm

JL

Junior Reliability Engineer

Jll

Rosemead, CA · Sep 18

$80k–$90k/yr Engineering Onsite cmms rcm

Spacecraft Thermal Engineer (Early Career) - Millennium Space Systems

Boeing

USA - El Segundo, CA · Sep 17

$63k–$134k/yr Engineering Onsite thermal design thermal desktop

Mission Analysis Engineer (Entry level) - Millennium Space Systems Top Pick

Boeing

USA - El Segundo, CA · Sep 17

$80k–$148k/yr Engineering Onsite matlab simulink

PhD Research Intern, Hardware and Systems Architecture - 2027 Top Pick

Nvidia

US, CA, Santa Clara · Sep 17

$38–$94/hr Engineering Onsite c c++

RO

Electrical Engineering Intern Summer 2027 Top Pick

Rocketlab

Pasadena, CA · Sep 17

$28/hr Engineering Onsite fpga design spice

Spacecraft Thermal Engineer (Early Career) - Millennium Space Systems

Boeing Japan Kabushiki Kaisha

USA - El Segundo, CA · Sep 17

$63k–$134k/yr Engineering Onsite thermal design thermal analysis

RO

Test Engineering Intern - Manufacturing Spring 2027

Rocketlab

Long Beach, CA · Sep 17

$28/hr Engineering Onsite ardinuo labview

Hardware Engineering Intern Top Pick

Danaher

Vista, California, United States · Sep 17

$25–$35/hr Engineering Onsite solidworks autocad

Mechanical Engineer Intern (Aerospace) - Summer 2027

Sensata

Thousand Oaks, CA · Sep 17

$25–$32/hr Engineering Onsite

Mechanical Engineer Intern (Aerospace) - Summer 2027 Top Pick

Sensata

Vista, CA · Sep 16

$25–$32/hr Engineering Onsite statistics prototyping

Continuous Improvement Engineer Co-Op

Entegris

San Luis Obispo, CA · Sep 16

Engineering Onsite lean manufacturing six sigma

RO

Manufacturing Engineering Intern Summer 2027

Rocketlab

Long Beach, CA · Sep 16

$28/hr Engineering Onsite cad/cam fea

RO

Manufacturing Engineering Intern Spring 2027 Top Pick

Rocketlab

Long Beach, CA · Sep 16

$28/hr Engineering Onsite solidworks siemens nx

RO

RF Engineering Intern Top Pick

Rocketlab

Long Beach, CA · Sep 16

$28/hr Engineering Onsite python matlab

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