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52 2026 summer intern jobs found

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2026 summer intern California
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Ra
Mar 20, 2026
Intern
Manufacturing Engineering Intern (Summer 2026)
$25.10 - $46.59 hourly
Ralliant Hollister, CA, USA
PacSci EMC, a Ralliant Operating Company, delivers innovative energetic material solutions that enable mission success across aerospace and defense. As part of our commitment to developing future talent, we are seeking a Manufacturing Intern for Summer 2026, with the possibility of extending to part time thereafter . In this role, you will gain hands-on experience in a fast-paced, highly regulated environment while supporting engineering and manufacturing initiatives. You will collaborate with engineers, technicians, and cross-functional teams on real-world projects that drive operational excellence, product quality, and continuous improvement. Key Responsibilities: Development and completion of compliance matrix PFMEA Risk assessment Design of tooling Process development experiments Participate in group design reviews Work in configuration management system to manage program documentation Conduct data reporting and analysis (qualitative and quantitative) across...
Ra
Mar 20, 2026
Intern
Manufacturing Engineering Intern (Summer 2026)
Ralliant Hollister, CA, USA
Job Description PacSci EMC, a Ralliant Operating Company, delivers innovative energetic material solutions that enable mission success across aerospace and defense. As part of our commitment to developing future talent, we are seeking a Manufacturing Intern for Summer 2026. In this role, you will gain hands-on experience in a fast-paced, highly regulated environment while supporting engineering and manufacturing initiatives. You will collaborate with engineers, technicians, and cross-functional teams on real-world projects that drive operational excellence, product quality, and continuous improvement. Key Responsibilities As a Manufacturing Intern, you will: Support the development and completion of compliance matrices. Assist in preparing and updating PFMEA documentation. Contribute to risk assessments for manufacturing processes. Participate in the design of tooling to support production. Conduct process development experiments and report findings. Actively...
HN
Mar 20, 2026
Intern
Intern Structural/Architectural Engineer - Summer 2026
$24.23 - $36.34 hourly
HNTB Los Angeles, CA, USA
What We're Looking For We are seeking talented civil/structural or architectural engineering interns to join our dynamic team in Los Angeles, CA for Summer 2026. Those interested in joining our team should be proactive and approach design challenges with a willingness to explore lots of ideas. We are a group of design professionals that are passionate about Aviation, Sports and Transit design that connects and inspires people. Our practice believes great design comes from a spirit of curiosity, imagination and collaboration. We value diverse perspectives during the design process and take pride in delivering solutions that are specifically tailored to each client. We view each project as an opportunity to create something truly unique that connects us as a community. HNTB is a design leader because we hire the best national talent and develop employees from within. Our culture is investing in the next generation of structural engineers with a focus on creating an inclusive,...
FL
Mar 20, 2026
Intern
Mechanical Engineering Intern - Summer 2026
Flex Ltd Milpitas, CA, USA
Job Posting Start Date 03-10-2026 Job Posting End Date 03-16-2026 Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world. A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary. Job Summary To support our extraordinary teams who build great products and contribute to our growth, this Summer, we're looking to add a Mechanical Engineering Intern located in our Milpitas, CA site. Reporting to the Director, Operations Engineering, the Intern will assist with daily engineering tasks while learning, collaborating and working alongside Engineers and cross-functional teams. What a typical day looks like: Assist Engineering Team with time studies,...
Ra
Mar 03, 2026
Intern
Electronics Engineer Intern (Summer 2026)
Ralliant Hollister, CA, USA
Job Description PacSci EMC, an operating company under Ralliant , is seeking an Electronics Engineering Intern to join our team for Summer 2026 . In this role, you will support the development, documentation, and improvement of electronic hardware designs used in aerospace and defense applications, including printed circuit board assemblies (PCBAs), cable harnesses, and integrated electronic components. This internship provides hands-on experience partnering with design engineers, supplier partners, and manufacturing teams to ensure designs are robust, manufacturable at scale, and compliant with performance, quality, and reliability requirements. Key Responsibilities Assist in updating electrical schematics and PCB layout documentation in accordance with engineering change processes. Support creation and maintenance of Bills of Materials (BOMs), part specifications, and configuration control documentation. Perform part research and assist in evaluating alternate...
Ra
Mar 03, 2026
Intern
Manufacturing Engineering Intern (Summer 2026)
Ralliant Hollister, CA, USA
Job Description PacSci EMC, a Ralliant Operating Company, delivers innovative energetic material solutions that enable mission success across aerospace and defense. As part of our commitment to developing future talent, we are seeking a Manufacturing Intern for Summer 2026, with the possibility of extending to part time thereafter . In this role, you will gain hands-on experience in a fast-paced, highly regulated environment while supporting engineering and manufacturing initiatives. You will collaborate with engineers, technicians, and cross-functional teams on real-world projects that drive operational excellence, product quality, and continuous improvement. Key Responsibilities: Development and completion of compliance matrix PFMEA Risk assessment Design of tooling Process development experiments Participate in group design reviews Work in configuration management system to manage program documentation Conduct data reporting and analysis (qualitative and...
As
Dec 19, 2025
Intern
CAD Engineer/Librarian Intern (Summer 2026)
$29.00 hourly
Astranis San Francisco, CA, USA
Astranis builds advanced satellites for high orbits, expanding humanity's reach into the solar system. Today, Astranis satellites provide dedicated, secure networks to highly-sophisticated customers across the globe- large enterprises, sovereign governments, and the US military. With five satellites on orbit and many more set to launch soon, the company is servicing a backlog of more than $1 billion of commercial contracts. Astranis is the preferred satellite communications partner for buyers with stringent requirements for uptime, data security, network visibility, and customization.Astranis has raised over $750 million from some of the world's best investors, from Andreessen Horowitz to Blackrock and Fidelity, and employs a team of 450 engineers and entrepreneurs. Astranis designs, builds, and operates its satellites out of its 153,000 sq. ft. headquarters in Northern California, USA. CAD Engineer/Librarian Intern (Summer 2026) As an Intern, you will have an amazing...
Li
Oct 31, 2025
Intern
Student Intern Summer 2026 - Structural Engineering
Lionakis Sacramento, CA, USA
Are you a Structural Engineering student who flourishes when part of a cohesive team where collaboration and ideas flow freely? Do you want to work for a firm that is taking concrete action toward equity, diversity, and inclusion in the workplace? Lionakis is currently seeking engineering students to participate in our 2026 EP (Emerging Professionals) Summer Internship Program. Student Interns will be assigned to our Sacramento office within our Structural Engineering studio. Applicants must be current students working towards an accredited degree in a related field (as listed below) to be considered. As the Student Intern, you will... Provide engineering support for projects with calculations, spreadsheets, and computer analysis using basic knowledge of construction materials. Provide Revit support utilizing Revit/BIM software to assist with creating construction documents. Support coordination of project design and construction process. Provide administrative support to...
Li
Oct 31, 2025
Intern
Student Intern Summer 2026 - Structural Engineering
Lionakis Irvine, CA, USA
Are you a Structural Engineering student who flourishes when part of a cohesive team where collaboration and ideas flow freely? Do you want to work for a firm that is taking concrete action toward equity, diversity, and inclusion in the workplace? Lionakis is currently seeking engineering students to participate in our 2026 EP (Emerging Professionals) Summer Internship Program. Student Interns will be assigned to our Orange County office within our Structural Engineering studio. Applicants must be current students working towards an accredited degree in a related field (as listed below) to be considered. As the Student Intern, you will... Provide engineering support for projects with calculations, spreadsheets, and computer analysis using basic knowledge of construction materials. Provide Revit support utilizing Revit/BIM software to assist with creating construction documents. Support coordination of project design and construction process. Provide administrative support to...
RL
Feb 20, 2026
Intern
Quality Engineering Intern Summer 2026
$28.00 hourly
Rocket Lab Corporation Long Beach, CA, USA
ABOUT ROCKET LAB Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more - all with the goal of opening access space. The rockets and satellites we build, and launch enable some of the most ambitious and vital space missions globally, supporting scientific exploration, Earth observation and missions to combat climate change, national security, and exciting new technology demonstrations. Our Electron rocket has become the second most frequently launched U.S. rocket annually and has delivered more than 230 satellites to orbit, all while we work to develop Neutron, our upcoming medium-lift, reusable launch vehicle for larger constellation deployment. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used...
HN
Mar 20, 2026
Intern
Intern Civil Engineer - Summer
$24.23 - $36.34 hourly
HNTB Santa Ana, CA, USA
What We're Looking For At HNTB, you can create a career that is meaningful to you while building communities that matter to all of us. For more than a century, we have been delivering solutions for some of the largest, most complex infrastructure projects across the country. With our historic growth, it is an exciting time to join our team of employee-owners. Our Santa Ana and Ontario, CA offices are seeking Intern Engineers for our 2026 summer program in the following areas: Transit, Rail, Structures, and Tolling. Relocation and housing are NOT provided for these positions. What You'll Do: Assists engineer teams in various tasks and duties. Assists Engineer with research, development and design of projects. Assists Engineer with the preparation of engineering drawings and documents as assigned. Performs other duties as assigned. What You'll Need: High School Diploma/GED or equivalent plus current enrollment in an accredited post-secondary engineering program...
Ri
Mar 13, 2026
Intern
Engineering Intern - Mechanical Modeling
$33.00 - $51.00 hourly
Rivian Palo Alto, CA, USA
About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations. Role Summary Internship Term: Summer 2026 Rivian internships are experiences optimized for student candidates. To be eligible, you must be an undergraduate or graduate student in an accredited program during the internship term with an expected graduation date between December 2026 through June 2028. Rivian's Internship Program requires active student enrollment. Information regarding your expected degree completion date is collected solely to verify...
OC
Mar 12, 2026
Intern
Manufacturing Engineering Intern
Ortho Clinical Diagnostics Rutherford, CA, USA
The Opportunity QuidelOrtho unites the strengths of Quidel Corporation and Ortho Clinical Diagnostics, creating a world-leading in vitro diagnostics company with award-winning expertise in immunoassay and molecular testing, clinical chemistry and transfusion medicine. We are more than 6,000 strong and do business in over 130 countries, providing answers with fast, accurate and consistent testing where and when they are needed most - home to hospital, lab to clinic. Our culture puts our team members first and prioritizes actions that support happiness, inspiration and engagement. We strive to build meaningful connections with each other as we believe that employee happiness and business success are linked. Join us in our mission to transform the power of diagnostics into a healthier future for all. The Role QuidelOrtho is looking for a Manufacturing Engineering Intern that wants to spend their summer working towards our mission: Changing Lives, One Test at a Time. Interns...
Co
Feb 21, 2026
Intern
CIP Engineering Intern II-IV
City of San Luis Obispo, CA San Luis Obispo, CA, USA
Salary: $17.50 - $23.77 Hourly Location : City of San Luis Obispo, CA Job Type: Paid Internship Department: CIP Project Engineering Opening Date: 02/18/2026 Closing Date: Continuous FLSA: Non-Exempt JOB DESCRIPTION The City of San Luis Obispo is looking for a CIP Engineering Intern II, III, or IV. CIP interns assist staff with the implementation of projects funded by City dollars - road paving, water and sewer line replacement, creek bank protection and City facility improvements. This position includes design in AutoCAD, construction inspection, review of signs/curb ramps and sidewalk as well as plan review. With projects spanning across the City, this role involves a mix of field and office work. The expected work hours are approximately 10-15 hours per week during the school year and 40 hours per week during the summer. This is a continuous recruitment; however, the posting can close at any time without notice, therefore, prompt application is...
TI
Jan 11, 2026
Intern
Summer 2025 Engineering Internship
TRL11, Inc. Irvine, CA, USA
TRL11 is a venture backed deep tech / defense tech startup bringing cutting-edge video technology to Aerospace applications. Based in Irvine, CA, we are seeking engineering interns for the summer of 2026. Summer internships typically cover a wide range of disciplines, including mechanical, electrical, optical, manufacturing, software, and test engineering. Our engineers contribute directly to real projects that support TRL11 product development. Join our team and play a crucial role in shaping the future of Human Space Exploration and US National Security. Job Duties: Measure and analyze camera components and system performance Assist with hardware testing, board validation and bring up, and debugging of electrical systems Inspect, assemble, and measuer mechanical components and enclosures Assist hardware engineers with mechanical and electrical CAD and drawings Write and execute test plans and present reports to engineering leadership Optimize in house production system...
rI
Nov 27, 2025
Intern
Civil Engineering Intern - Site Design
$24.00 - $26.00 hourly
raSmith, Inc Irvine, CA, USA
We currently have an opening for a student to fill a summer intern position to begin in Summer 2026 at our Irvine, CA office. We are looking for students with an interest in gaining practical engineering experience from experienced project managers, engineers and technicians through on-the-job training on real projects. During this time, you will be encouraged to hone your problem-solving abilities and develop technical skills. Ranked #2 as a Top Workplace, raSmith is a growing multi-disciplinary consulting civil and structural engineering and land surveying firm with over 45 years of experience. We work on projects nationwide from our seven locations in Wisconsin, Illinois and California. At raSmith, our culture is focused on client service, quality and innovation. We strongly believe in work/life balance and employee development. These attributes and our people-oriented environment have led us to receive numerous project and culture awards. Site Design Intern - Primary...
CC
Nov 01, 2025
Intern
Summer 2026 Engineering Internship
Castelion Corporation Torrance, CA, USA
About the job Summer 2026 Engineering Internship About Castelion Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We're designing, building, and testing next-generation long-range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts. Summer 2026 Engineering Internships Join us for a dynamic, hands-on experience developing next-generation missile systems across disciplines such as software, guidance/navigation/control (GNC), propulsion, power electronics, manufacturing, mechanical and structural design, avionics, and system integration. As an intern, you'll contribute directly to the design, testing, and integration of advanced defense technologies all within a fast-paced, collaborative startup environment where your work has immediate impact. Key...
3DEO
Oct 10, 2025
Full time
Senior Mechanical Engineer
$130,000 - $175,000 yearly
3DEO Torrance, CA, USA
Job Title: Senior Mechanical Engineer — Industrial Machine Design & Integration Department: R&D Reports to: Director of Engineering Employment Type: Full-Time FLSA Status: Exempt The Company: 3DEO is a leader and innovator in sinter-based additive manufacturing (AM), delivering proprietary and differentiated AM solutions that drive breakthrough product performance. With some of the industry’s highest-volume capabilities in metal 3D printing, 3DEO combines cutting-edge manufacturing with multi-disciplinary engineering and product development expertise. Our patented and award-winning technology has revolutionized how customers approach design, enabling high-volume production with unmatched quality, precision, and cost efficiency. Holding roughly 20 patents, 3DEO is more than a manufacturer – we are a trusted partner in solving complex challenges and unlocking the full potential of AM. At 3DEO, we collaborate closely with customers in...
3DEO
Oct 10, 2025
Full time
Senior Software Engineer
$140,000 - $180,000 yearly
3DEO Torrance, CA, USA
Job Title : Senior Software Engineer – Slicer & Manufacturing Platform Development Department: R&D Reports to: Chief Operating Officer Employment Type: Full-Time FLSA Status: Exempt The Company: 3DEO is a leader and innovator in sinter-based additive manufacturing (AM), delivering proprietary and differentiated AM solutions that drive breakthrough product performance. With some of the industry’s highest-volume capabilities in metal 3D printing, 3DEO combines cutting-edge manufacturing with multi-disciplinary engineering and product development expertise. Our patented and award-winning technology has revolutionized how customers approach design, enabling high-volume production with unmatched quality, precision, and cost efficiency. Holding roughly 20 patents, 3DEO is more than a manufacturer – we are a trusted partner in solving complex challenges and unlocking the full potential of AM. At 3DEO, we collaborate closely with customers in...
Co
Mar 20, 2026
Full time
Assistant Engineer II (Office) (Continuous)
$113,327 - $139,133 yearly
City of Oakland, CA Remote (Oakland, CA, USA)
Salary : $113,326.68 - $139,133.04 Annually Location : Oakland, CA Job Type: Full Time Civil Service Job Number: 25-ET113-11 Department: Oakland Public Works Department Opening Date: 11/05/2025 FLSA: Non-Exempt Bargaining Unit: TF1 The Position The City of Oakland is an equal opportunity employer that values workforce diversity, inclusion, and equity. Oakland has a long history of activism around issues of justice and equity. Both oppression and this resistance to oppression have shaped the city's historical roots and the lives of its residents to this day. As public servants in one of the most diverse cities in the nation, we strive to develop employees who understand the harm and impacts of systemic inequity to create lasting, meaningful outcomes for everyone. Oakland strives to establish an environment that embraces the richness of culture, community, and individualism of employees. Why join the City of Oakland? The City of Oakland is currently recruiting...
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