Internships in Pleasanton, California, United States

HR team at BKF Engineers supports hiring, employee lifecycle, and internal operations. The intern assists with onboarding/offboarding logistics, coordinates interviews, reviews resumes, and maintains HR records while gaining hands‑on experience.

Intern in construction group assists project managers with execution, coordination, scheduling, design support, purchasing, documentation, and estimation tasks.

W.E. O'Neil Construction's Assistant Project Engineer (2027 Summer Intern) supports a construction project team with administrative and engineering tasks at the Pleasanton, CA office. Day-to-day work includes setting up and maintaining CMiC and PlanGrid logs, managing RFIs and submittals, tracking material procurement, compiling closeout documents, and attending project meetings.

Kairos Power's Engineering teams in Salt Chemistry, Fuels, and Materials are advancing nuclear energy solutions. Interns will collaborate on chemical, materials, and process engineering projects, conducting experiments, data analysis, and documentation while gaining hands‑on experience in labs and manufacturing settings.

People Team at Astra offers an internship program for incoming sophomores, juniors, and seniors across engineering and business disciplines. Interns contribute to spacecraft and launch vehicle design, systems engineering, CAD modeling, analysis, testing, and documentation while working alongside senior engineers.

Dropship Mechanical Team at Pyka builds autonomous electric aircraft hardware. The intern supports design, prototyping, testing, and iteration of mechanical components, creates CAD models, and collaborates with manufacturing to improve build processes.

Core Technology team at Rondo Energy develops high‑temperature heat battery platforms for industrial decarbonization. The intern supports thermal and fluid performance analyses using 1D simulation tools, builds steady‑state and transient thermal models, and validates results against test data.

The National Security Engineering Division (NSED) within the Engineering Directorate at Lawrence Livermore National Laboratory (LLNL) offers undergraduate internships supporting national security missions across nuclear deterrence, threat preparedness, energy security, and multi-domain defense. Interns perform technical and research assignments in electrical, mechanical, computational, nuclear, or chemical engineering under close supervision, gathering and analyzing data, utilizing standard soft

The Center for Global Security Research (CGSR) at Lawrence Livermore National Laboratory seeks a Graduate Research Associate to support national security missions in deterrence, nonproliferation, and energy security. The role involves conducting independent research, analyzing data, and contributing to strategic reports and workshops during the Spring 2027 term.

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.

Computing team at Lawrence Livermore National Laboratory offers a Fall 2026 Undergraduate Internship where interns support projects in computational science, cyber defense, and related STEM fields. Interns provide technical and research assistance, gather and analyze data, and contribute to research planning and presentations.

Lawrence Livermore National Laboratory (LLNL) seeks an Undergraduate Intern in the Nuclear Criticality Safety Division (NCSD) within the Environment, Safety and Health (ESH) Directorate. Based in Livermore, California, this hybrid role combines hands-on laboratory work during the summer with virtual collaboration during the school year.

Materials Science Division at Lawrence Livermore National Laboratory provides hands‑on research opportunities in chemistry, materials science, and computational modeling to advance national security and scientific discovery. As an undergraduate intern you will work directly with scientists on laboratory experiments, computational simulations, or data analysis, gather and interpret results, and present findings to the team.

WDTS Program at Lawrence Livermore National Laboratory provides a 10‑16 week research internship for undergraduate STEM students. Interns conduct supervised research, prepare oral or poster presentations, and submit project reports while participating in lectures, tours, and professional development events.

Lawrence Livermore National Laboratory's Computational Engineering Division (CED) seeks an Energy Systems Analyst Graduate Student Intern to support research on energy systems modeling, technoeconomic and lifecycle assessment, geospatial analysis, and network optimization. The intern will conduct assessments of synthetic and biofuels, alternative feedstock utilization, hydrogen systems, and technology commercialization, while synthesizing findings and preparing technical deliverables.

The Center for Global Security Research (CGSR) at Lawrence Livermore National Laboratory seeks an Undergraduate Research Associate to support national security analysis. The role involves conducting independent research on topics like deterrence and cybersecurity, contributing to literature reviews, and presenting findings to staff.

The Computational Engineering Division (CED) at Lawrence Livermore National Laboratory (LLNL) in Livermore, California, offers Graduate Student Intern positions to support national security missions through computational engineering research. Interns provide technical and research support to projects in computational, electrical, or mechanical engineering, gathering and analyzing data, conducting research under limited supervision, and presenting findings.

Lawrence Livermore National Laboratory (LLNL) Materials Science Division offers a Winter/Spring 2027 graduate internship in Livermore, California, supporting national security missions in nuclear deterrence, threat preparedness, energy security, and multi-domain defense. Interns conduct hands-on laboratory, computational, or data analysis research in areas such as organic/inorganic synthesis, materials characterization, actinide and optical materials, electrochemistry, and metallurgy, working wi

The National Security Engineering Division (NSED) within the Engineering Directorate at Lawrence Livermore National Laboratory (LLNL) advances U.S. security across nuclear deterrence, threat preparedness, energy security, and multi-domain defense. Graduate interns provide technical and research support to projects in electrical, mechanical, optical, nuclear/chemical engineering, space, applied physics, or data science, working alongside engineers, scientists, and technical staff.

The Computational Engineering Division at Lawrence Livermore National Laboratory seeks a Graduate Intern to support national security missions in nuclear deterrence and energy security. The role involves conducting practical research, analyzing data, and providing technical support for computational engineering projects under limited supervision.