Internships in Casas Adobes, Arizona, United States

Tax Department at Redwitz Inc. provides comprehensive tax compliance and advisory services to diverse clients. The Tax Intern supports audit and accounting engagements, prepares individual and business tax returns, and assists with tax audits under senior supervision.

Audit Department at Redwitz Inc. supports public accounting clients by delivering comprehensive audit and accounting engagements. The intern provides audit support, performs substantive testing, documents internal controls, and assists in preparing financial statements while shadowing senior staff.

A summer internship for Mechanical Engineering students at RTX’s Shipboard Effectors AUR (SEA) team in Tucson, AZ. Interns will train on RTX tools such as CREO and PDM, support design and documentation, manage engineering changes, and collaborate across teams. The role involves analytical work, presentation of designs, and learning Raytheon processes.

Materion's 2026 Internship & Co-Op Program offers paid opportunities for students in various engineering, business, and tech fields. Interns gain hands-on experience, mentorship, and professional development while contributing to innovative projects.

Roche seeks a Summer Intern to support global customer teams in Tucson, AZ. The role involves creating service and training materials for diagnostic products, troubleshooting customer issues, and collaborating across development and operations. The internship is 12 weeks, full‑time, paid, and includes a stipend and paid holidays.

Commercial Internship program at Caterpillar. The team provides diverse project experience across Business Operations, Marketing, and Product Support Engineering, giving interns exposure to building customer‑facing digital solutions, brand storytelling, and technical support for heavy equipment.

Roche is seeking a 2026 Summer Intern for the Design Transfer Operations team in Tucson, Arizona. The role focuses on supporting end‑to‑end design transfer activities for new assays, reagents, and bulk materials into existing manufacturing processes.

Internship at RTX in Tucson, Arizona. 100% onsite role in Test Equipment Directorate. Work on mechanical test systems for production testing, covering vibration, thermal, hydraulic, RF, electro-optical.

2026 Summer Corporate Intern – Engineering at Caterpillar invites full‑time university students to join a global engineering team for a 12‑week, 40‑hour per week internship. Interns work on product design, simulation, testing, controls, electronics, embedded software, validation, data analytics, and process engineering, collaborating with cross‑functional teams from concept to production.

Caterpillar invites students to join its Business Operations team as a 12‑week summer intern. The role offers hands‑on experience across product development, dealer management, marketing, and sales, with rotations that build foundational knowledge of Caterpillar’s products, services, and customers.

Campaigns & Advocacy team at Reproductive Freedom for All advances reproductive freedom through grassroots mobilization and legislative action. The intern will recruit and train volunteers, organize canvassing and phone banking events, and support campaign logistics using tools like VAN and Slack.

Internship in RTX’s Modeling, Simulation & Analysis (MSA) team within the Systems Engineering Directorate. Work onsite in Tucson, AZ, designing and developing simulation models for missile system components.

Roche invites a Summer Intern to join the Personalized Healthcare Solutions (PHCS) Pharma Services Assay Development group in Tucson. The role focuses on research and development of tissue diagnostics, including innovative detection technologies, experimental design, data analysis, and technical reporting.

Materion invites students to join its 2024 Internship Program, a paid summer experience across multiple U.S. sites including Tucson, AZ; Westford, MA; Albuquerque, NM; Cleveland, OH; and others. Interns will work in areas such as Process Engineering, Quality/Continuous Improvement, Environmental Health & Safety, Manufacturing Operations, Commercial Sales & Marketing, Research & Development, Finance & Accounting, Procurement & Supply Chain, Communications & Marketing, Information Technology, Huma

Internship in Raytheon's Finance organization, providing exposure to financial planning, analysis, program management, and process improvement. Interns develop financial models, support decision-making, and present projects to leadership.

At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and professionally.

Corporate Communications team at Caterpillar drives internal messaging and stakeholder engagement. The Communications Intern will create content, support campaigns, track metrics, and collaborate with internal stakeholders to ensure consistent branding.

Veterinary Emergency Group (VEG) invites veterinary technology students to join an immersive externship in emergency medicine. The program offers hands‑on experience across triage, diagnostics, anesthesia, and inpatient care, guided by credentialed technicians.

At Roche, the 2026 Summer Intern – Research Associate I role offers a 12‑week, full‑time (40 hours per week) paid internship in Tucson, Arizona. The internship focuses on developing high‑value diagnostic assays for targeted cancer therapies, partnering with pharmaceutical companies, and providing training to laboratory personnel, histotechnologists, pathologists, and oncologists.

Support Group Intern – Prequalification at Sundt supports the prequalification team in risk assessment of potential trade partners for construction projects. The role involves collecting and reviewing prequalification documents, preparing reports, maintaining a partner database, and assisting the CFO with strategic and administrative projects.