Internships in Lake Forest, California, United States

Seneca Family of Agencies offers a Fieldwork Placement in Southern California for clinical graduate interns (MSW, MFT, PCC) based in Lake Forest, CA. Interns complete hands-on fieldwork with children and families, receive training and supervision on the Seneca treatment model, and follow a school-year schedule. The role requires a minimum commitment of 16 hours per week, with exact schedules set with a supervising clinician.

At Motorola Solutions, the Intern – Embedded Software, System, and Test Engineer will work on Silvus StreamCaster radios, developing embedded firmware, testing environments, and scripts. The role reports to the Senior Engineering Director in Irvine, CA, and is fully onsite Monday through Friday.

Treasury Management Internship at PNC Bank, part of the Corporate & Institutional Banking division, helps clients optimize working capital through cutting‑edge payment solutions and cash management services. Interns create client deliverables, conduct industry research, analyze payment trends, and support strategic projects while shadowing sales officers.

Field AI’s Hardware Team develops perception and compute payloads for autonomous robotics systems in complex real-world environments. As a Part-time Intern, you will assist in designing electrical systems, conducting circuit testing, and collaborating with senior engineers on integration tasks.

Northwestern Mutual College Financial Representatives internship program builds future financial planners through mentorship, networking, and hands‑on experience. Interns prospect clients, develop business strategies, prepare financial plans, and use proprietary planning software while receiving weekly coaching and licensing support.

Barnes & Noble Education Campus Bookstore team creates vibrant retail and learning experiences for students. The Student CMO role drives digital marketing, social content, and campus event promotion to boost bookstore engagement.

W.E. O'Neil Construction's Assistant Project Engineer (2027 Summer Intern) supports the project team with administrative and engineering functions for a construction project. Day-to-day work includes setting up CMiC and PlanGrid, maintaining submittal and RFI logs, documenting progress photos, tracking material procurement, and assisting with meeting minutes and closeout binders.

Commercial Operations Team at Boldyn Networks drives market intelligence and sales support. The intern conducts lead generation, creates market reports across verticals, and supports marketing campaigns while maintaining CRM data.

Field AI Robotics Research team builds intelligent autonomous legged robots for real‑world deployment. As a research intern you will design, implement, and evaluate reinforcement‑learning pipelines that integrate locomotion control with learned planning, and validate these systems in simulation and on hardware.

Google's Software Engineering Internship program for PhD students in their penultimate academic year offers a 12–14 week paid internship across multiple U.S. locations. Interns work on specific projects critical to Google's needs, designing, testing, deploying, and maintaining software solutions while collaborating on complex computer science problems and scalable distributed systems.

Corporate & Institutional Banking (C&IB) at PNC delivers strategic financial solutions to businesses, municipalities and nonprofits. As an intern you will support experienced bankers in client engagements, assisting with deal support, sales processes and internal projects while gaining exposure to multiple banking disciplines.

Medtronic Engineering Internship program works to develop innovative medical technologies that improve patient outcomes. Interns support research & development, operations, or quality engineering projects, applying design, testing, data analysis, and documentation skills.

Autonomy team at FieldAI builds risk-aware, reliable autonomous robotic systems for real-world, unstructured environments. As a Robotics Controls Intern you will model system dynamics, optimize GPU‑accelerated control libraries, and develop low‑latency safety layers for off‑road vehicles, working directly with senior engineers.

Field AI’s Hardware Team develops perception and compute payloads for autonomous robotics systems. As a Mechanical Engineer Intern, you will design ruggedized enclosures, manage thermal regulation, and oversee prototyping to ensure field-ready reliability in Irvine, CA. This is an on-site, part-time internship role.

Northwestern Mutual College Financial Representative Internship Program builds future financial planners by providing guidance, networking, and a framework for integrated financial planning. Interns prospect, develop business strategies, meet clients, and prepare financial plans while using proprietary software and weekly coaching.

A 10‑week paid internship focused on learning Aerotek’s recruiting, account management, and field support sales processes.

HCVT offers an International Tax Internship for summer 2027, providing hands‑on experience in preparing federal and multi‑state tax returns, researching international tax rules, and using firm tax software. Interns work 40 hours per week from mid‑June to mid‑August in a hybrid environment across Glendale and Irvine offices, gaining exposure to diverse clients in private equity, real estate, media, and more.

This internship offers active‑duty service members a chance to gain hands‑on experience across engineering, IT, HR, and business operations while transitioning to civilian life. As a DoD SkillBridge partner, Salas O’Brien provides immersive, skills‑aligned projects at multiple U.S. locations, with hybrid or remote options.

Software Engineering Internship at The Trade Desk. Interns own and ship a meaningful end‑to‑end project while receiving one‑on‑one mentorship from experienced engineers and collaborating with a globally connected team.

Studs is a leading ear‑piercing and earring retailer recognized for innovation. The brand offers a full end‑to‑end experience that blends in‑store piercing with aftercare and jewelry shopping.