Internships in Wilmington, California, United States

An engaging internship for Chemical Engineering students, offering hands‑on experience across refinery operations, process optimization, environmental compliance, and product economics. Interns work with experienced engineers, develop critical thinking, and enhance presentation skills while contributing to real projects that improve refinery performance.

An exciting career awaits you at MPC, a leader in the oil & gas industry. As an Electrical Engineer intern at a Marathon refinery, you will become familiar with industry codes and best practices, build critical thinking skills, and gain an understanding of how all engineering disciplines work together as a cohesive team.

An exciting career awaits you at Marathon Petroleum (MPC), a leader in the energy industry committed to fostering a collaborative team environment. As an Intern/Co‑Op in Supply Chain for Summer 2026, you will be assigned to roles such as Commercial Sourcing Advisor, Supply Chain Associate, or Business Analyst.

An exciting career awaits you at Marathon Petroleum Company LP. As an Intern/Co‑op in Refining Chemical Engineering, you will work across multiple refinery locations, gaining hands‑on experience with process equipment, technical services, operations research, environmental compliance, and product economics. You will perform process engineering calculations, validate production data, develop process models, and support refinery operations.

An exciting internship opportunity at Marathon Petroleum Corp. (MPC) offers high‑performing college students hands‑on experience in Safety & Industrial Hygiene.

An exciting career awaits you at MPC, where interns gain hands‑on experience in refining electrical engineering. Interns work across multiple refinery locations, learning industry codes, best practices, and cross‑disciplinary collaboration.

An exciting career awaits you. At MPC, we’re committed to being a great place to work – one that welcomes new ideas, encourages diverse perspectives, develops our people, and fosters a collaborative team environment. Marathon Petroleum Corp. (MPC) offers internship and co‑op opportunities to high‑performing college students who want meaningful hands‑on experiences in their fields of study.

An exciting career awaits you At MPC, we’re committed to being a great place to work – one that welcomes new ideas, encourages diverse perspectives, develops our people, and fosters a collaborative team environment. Overview: Depending on experience level and interest, construction management entry level hires at Marathon Petroleum Company LP (MPC) are involved in diverse and challenging projects.

FNS, INC’s internship program invites students to join our logistics team in Carson, CA, where they will support operations, data analysis, and process improvement projects. Interns collaborate with cross‑functional teams to enhance customer service and streamline supply‑chain workflows.

FNS, INC’s internship program invites students to join the Human Resources team in Carson, CA, where they will support talent acquisition, onboarding, and employee engagement initiatives. Interns will collaborate with HR partners to streamline recruitment processes, assist in benefits administration, and contribute to workforce analytics projects.

Marathon Petroleum offers an internship in Midstream Environmental for Fall 2026. Interns work with experienced professionals across Findlay, Long Beach, and San Antonio to support environmental policy, engineering design, compliance, and training.

Marathon Petroleum Company LP (MPC) offers internship and co‑op opportunities to high‑performing college students for meaningful hands‑on experiences in Commercial operations. Interns work side by side with experienced professionals as contributing members of diverse work teams, creating value for shareholders while upholding core values of Safety & Environmental Stewardship, Integrity, Respect, Inclusion, and Collaboration.

An exciting career awaits you at Marathon Petroleum Company LP (MPC) where interns and co‑ops work side by side with experienced professionals in diverse commercial teams. The Commercial Intern program offers hands‑on experience across scheduling, marketing, analytics, coordinating, systems support, and commercial development roles.

Internship in Wells Fargo’s Trust Services team within Wealth & Investment Management. 10‑week summer program in Long Beach, CA (and Wilmington, DE).

Vast's Space Systems team advances next‑generation space stations, enabling microgravity research and commercial space operations. Interns design and build mechanical and aerospace hardware, conduct thermal and ECLSS testing, and collaborate across engineering disciplines to support Haven‑1 development.

Manufacturing Internship at Vast, contributing to the development of next‑generation space stations. Interns design and build space hardware and software, collaborating across engineering teams to solve real‑world problems in tooling and manufacturing.

Shimmick seeks a motivated Field Engineer Intern to support projects across Southern California. The role involves applying engineering techniques, preparing calculations and drawings, assisting with field inspections, and contributing to construction administration.

Odys Aviation builds safe, sustainable aircraft to halve travel time. As a Robotics & Embedded Systems Intern, you’ll join the UAV team to assemble, integrate, and test autonomous platforms.

Odys Aviation builds safe, sustainable aircraft to halve travel time on busy corridors. As a Systems Engineering and Integration Intern, you’ll support definition, architecture, integration, and testing of a novel aircraft system.

Audit Internship – Winter 2027 at HCVT offers a hybrid learning experience for accounting students. Interns join audit engagement teams to document and execute audit procedures, manage project timelines, and ensure efficient client information flow.