Internships in San Leandro, California, United States

Fuse is pioneering fusion energy, building Titan, a next‑generation fusion generator. As an intern, you’ll work on the R&D team in San Leandro, contributing to design, testing, and integration of cutting‑edge components.

The Store Assets Protection Executive Intern (Store Leadership Intern) role offers a summer internship in the Greater Bay Area, California, where interns work closely with a mentor to learn the AP business area and other team functions within Target stores. Interns will manage a security culture, including crisis response, safety environment, and crowd management planning, execute strategic AP strategies and goals, identify and develop resolutions for external theft and fraud, conduct internal a

Fuse is pioneering fusion energy, aiming to deliver limitless, clean power by replicating the sun’s process. As an intern, you’ll join the Titan project, helping build the next‑generation fusion generator.

Externship Opportunities at VetnCare offer veterinary students a 2‑week, hands‑on experience in a supportive clinical environment. Interns shadow veterinarians, observe diagnostics, treatment planning, and case management, and gain exposure to surgery, dentistry, urgent care, and exotic animal medicine.

Apprentice Teacher Assistants support YMCA Early Childhood Impact centers across the East Bay, providing high‑quality care and instructional assistance to children of all abilities. In this on‑site apprenticeship, candidates help lead classroom activities, supervise children, assist with meal service, and maintain safe learning environments.

Uline seeks a motivated college student for a paid summer internship in outside sales. The role offers hands‑on experience selling to diverse industries, weekly training, mentorship, and a phone and car allowance.

Intern - Aviation Planning (Summer 2026) at HNTB is a part‑time, temporary, or co‑op internship located in Oakland, CA. The role supports the aviation planning team under close supervision, assisting with basic research, data collection, record keeping, and development of graphics, presentation materials, and reports. Candidates must be enrolled in a related undergraduate or graduate program, have a strong interest in aviation, critical‑thinking skills, and a desire to grow in the industry.

At Gensler, a global design firm, this Student Internship – Architecture – Summer 2026 – Northwest Region offers a full‑time, paid program from June 2 to August 7, 2026. Interns work on architecture projects as collaborative team members, participating in design charrettes, producing graphic presentations, 3D renderings, technical drawings, and physical study models.

At Gensler, a global design firm, the Student Internship – Interior Design – Summer 2026 – Northwest Region offers a full‑time, paid program from June 2 to August 7 2026. Interns work across four offices—San Francisco, Seattle, Oakland, and San Jose—immersing in collaborative studio culture.

Construction Safety Team at Stacy Witbeck ensures project sites follow company safety policies and processes. The Safety Intern assists safety professionals with field activities, safety documentation, and coordination of safety meetings while supporting project staff in identifying hazards.

Internship with Introba’s Sustainability Team for Summer 2026. In‑person role in San Diego, Oakland, Austin, or NYC. Engage in new construction and portfolio‑wide sustainability projects, supporting analysis, planning, and reporting.

EIC 2026 Summer Internship at Cushman & Wakefield in Oakland, CA. The internship immerses students in the commercial real estate service line, where they gather data, conduct research, and analyze market trends to support client advisory. Interns work up to 30 hours per week on-site, contributing to daily tasks, client issue resolution, and project reporting while developing professional expertise through on‑the‑job training.

WED Intern Planner (For Current/Previous HNTB Interns ONLY) (Summer 2026) is a part‑time, temporary, or co‑op internship at HNTB. The role involves working under close supervision to assist departments with basic assignments in Science, Planning, and Technology.

Helix Electric, a leading electrical contracting firm, seeks a Project Engineer Intern for Fall 2026. The intern will support project managers, coordinate between field and office, and contribute to project planning, execution, and budgeting.

Helix Electric, a leading electrical contracting firm, seeks a Project Engineer Intern to support project managers, coordinate with field teams, and contribute to project planning, budgeting, and safety. The role offers hands‑on experience across construction phases, mentorship, and exposure to BIM, Accubid, and procurement processes.

Stacy Witbeck Interns in Heavy Civil Field Engineering support field engineers and project managers to ensure projects stay on schedule and budget. The Field Engineer Intern assists with planning, cost tracking, material coordination, and on‑site documentation while learning civil engineering practices.

Structural Engineering Internship at Simpson Gumpertz & Heger (SGH) in Oakland, CA. The role supports SGH’s mission to deliver holistic engineering solutions by assisting with construction monitoring, field investigations, drafting, structural design, and client deliverables. Interns work onsite in the Oakland office, gaining hands‑on experience with hand calculations, analysis software, and field testing.

Mechanical Engineer Intern at Illinois Tool Works offers hands‑on experience in mechanical design, testing, and product development for summer 2026.