Internships in California, United States

Flatiron's Intern Program offers college students in Civil Engineering, Mechanical Engineering, and Construction Management challenging, real-world work opportunities. As a Field Engineer Intern, you will apply academic training on project job sites, assisting project managers and on-site construction staff with plan interpretation, project specifications, cost codes, and construction schedules.

Flatiron's Intern Program offers Civil Engineering, Mechanical Engineering, and Construction Management students hands-on field experience across project locations. As a Field Engineer Intern in Sacramento, CA, you will support on-site construction staff by applying engineering technology principles—interpreting plans and specifications, assisting with layout and quality testing, tracking quantities and productivity, updating schedules, coordinating design changes, and providing CAD-based design

Estimating Intern position in Concord, CA for Summer 2027, supporting the estimating team in preparing construction discipline estimates. Day-to-day work includes reviewing proposal specifications and drawings, calculating material quantity takeoffs from engineering dimensions, analyzing historical cost and productivity data, consulting with clients and vendors, and assisting with project hand-off meetings.

FlatironDragados' 2027 Intern Program in Concord, California offers a Health and Safety Intern position supporting a Bay Area Project. Under the supervision of the District Safety Manager or Project Safety Manager, you will assist in facilitating the company's safety program by applying academic knowledge in a real-world construction setting.

FlatironDragados' Intern Program offers Civil Engineering, Mechanical Engineering, and Construction Management students hands-on training at project locations. As a Field Engineer Intern in Redding, CA, you will apply academic skills on-site by assisting project managers and construction staff with plan interpretation, quality testing, survey layout, document control, quantity tracking, schedule updates, and CAD-based design assistance for temporary structures.

Royal Electric Company is seeking an IT Intern for Fall 2026 at its Sacramento, California office. The intern will work on-site with the IT team, assisting with day-to-day IT support and projects while gaining hands-on learning to support professional growth.

The Port of San Francisco is seeking a Student Design Trainee III to join the Utilities team within the Engineering Division. The intern will assist professional engineers with field inspections, data collection, design support, and project documentation for mechanical and electrical systems across Port facilities.

Arcade is building the world's first AI-powered physical product creation platform, headquartered in San Francisco's Presidio. The Social Media & Content Marketing Intern will help grow Arcade's brand and social presence by creating compelling social content, supporting product launches, and identifying emerging trends across B2B and B2C marketing motions.

AEG's Diversity, Equity & Inclusion Department seeks a Fall Intern to support DEI programs and Employee Network Group initiatives that foster an inclusive workplace. Day-to-day work includes maintaining and auditing DEI/ENG resources, developing internal communications and awareness campaigns, tracking volunteer hours, and assisting with event coordination and content curation.

Crescenta Valley Water District (CVWD) is seeking a Communications and Outreach Intern to support public relations and community outreach efforts from September 2026 to June 2027. The intern will assist with communication strategies, social media content creation, video production, event coordination, and general administrative support within a public agency.

Zip is an AI platform for enterprise procurement that orchestrates purchasing across teams, tools, and suppliers using AI agents. As a Software Engineer Intern, you will build Zip’s core products and architecture, shipping features used by customers while working closely with cross-functional teams on complex technical and product challenges.

The Golf Operations Intern position within the Golf Operations department at Riviera Country Club in Pacific Palisades, CA, supports the Director of Golf by rotating through Pro Shop check-in, on-course marshalling, 18th green attendant, customer service, and tee captain duties. Interns develop service skills and golf facility knowledge through daily mentorship while helping ensure guest satisfaction and pace-of-play objectives.

LotusWorks is an Engineering Services provider managing Commissioning, Construction Services, Calibration, Operations & Maintenance for global manufacturing facilities across the Semiconductor, Pharmaceutical & Biologics, Medical Device, and Data Centre sectors. As a Mechanical Technician Intern in Sunnyvale, California, you will support the Mechanical Maintenance and Operations team in maintaining and operating facility systems such as HVAC, pumps, compressors, chillers, and process utilities u

Kodiak Robotics is seeking a Winter 2027 Simulation Intern to help advance its autonomous trucking platform. The intern will solve real-world robotics problems, work on a production-level C++ codebase in self-driving, and collaborate daily with other engineers in a fast-paced environment.

Kodiak Robotics is a leader in autonomous ground transportation, developing an AI-powered technology stack for commercial trucking and the public sector. As a Mission Planning Intern, you will work on the Mission Planning team developing core mission, routing, and fault management algorithms that drive autonomous trucks.

Kodiak Robotics is an autonomous ground transportation company building an AI-powered technology stack for commercial trucking and public-sector applications. As a Winter 2027 AI/ML Intern in Mountain View, CA, you will design and implement machine learning algorithms and deep neural networks for robotics challenges such as 3D scene understanding, object detection, and world reconstruction, working with camera, lidar, and radar sensor data.

At Sunday Robotics in Redwood City, California, the Industrial Design Intern will work closely with industrial design and engineering teams on Memo, a personal home robot aimed at reclaiming time lost to repetitive household tasks. Day-to-day, you will contribute to real product development across the full design process—from early brainstorming and concept development to design refinement and mass-production readiness—through sketching, CAD, physical prototyping, and CMF exploration.

Lawrence Livermore National Laboratory (LLNL) seeks an Undergraduate Intern in the Nuclear Criticality Safety Division (NCSD) within the Environment, Safety and Health (ESH) Directorate. The intern will work on a multi-laboratory NNSA research project, modeling radiation and imaging detector responses of nuclear systems using Python or C++, nuclear interaction physics, and nuclear data formatting.

Intuitive's R&D team advances computer vision for robotic endoscopic video technologies, including the da Vinci surgical system and Ion. The intern will research and prototype vision foundation/diffusion models, feature detection, and multimodal video analysis, conducting literature surveys and experimental evaluation on large-scale datasets. This on-site internship in Sunnyvale, California, requires part-time availability (~20 hours/week) over a 15-16 week period starting August or September.

Joby Aviation is seeking a Technical Program Management Intern to support the powertrain and electronics propulsion TPM team in San Carlos, CA. The intern will work closely with design, manufacturing, supply chain, and testing teams to identify and solve critical path priorities, driving the organization toward type-certification of the S4 aircraft. Responsibilities include facilitating design-improvement cycles, managing development hardware assets, and coordinating critical-path priorities.