Mechanical Engineering Intern Jobs in United States

2026 Summer Mechanical Engineering Intern Fourth Power is developing and commercializing the lowest cost energy storage technology on the market to enable the utility grid to operate 24/7/365 on renewable energy. Our batteries store heat in low-cost carbon blocks at up to 2400 degrees Celsius – half

Role Overview: As a Mechanical Engineering Intern, you will play a hands-on role in designing, developing, and testing complex mechanical systems for customer-facing projects. In this role, you will contribute to the full development lifecycle, from initial concept and simulation through prototyping

WhiteWater makes products, but we are a service business at our heart, which means we are a people business. In this way, we excel and create value for our clients by listening to their needs, collaborating to develop solutions, problem-solving and attending to the details. Our culture, as you would

Who We Are Boston-based company Piaggio Fast Forward Inc. (PFF) was founded in 2015 by the Piaggio Group (the Italian manufacturer that created the iconic Vespa scooter). We are on a mission to build technology products that move the way that people move. To bring products to market today, PFF is so

DLR Group is an integrated design firm with a promise to elevate the human experience through design. This fuels the work we do around the world and inspires our mission to improve the lives of our clients, our communities, and our planet. If this sparks your interest, you’re in the right place. Our

Rainmaker is pioneering a modern cloud seeding system to solve water scarcity and inclement weather problems. We develop and incorporate radar validation, weather-resistant UAS, numerical weather modeling, and sustainable cloud seeds into an effective precipitation enhancement solution. The Engineer

Mechanical Engineering Mechanical Engineering designs the physical structures and mechanisms that bring our products to life. From early concepts and prototyping to testing and manufacturing, this function develops durable, high-performance systems built to operate reliably in real-world conditions.

Location: El Segundo, CA | Department: Engineering | Employment Type:Intern-Fulltime Onsite | Start: Immediate Rainmaker is pioneering a modern cloud seeding system to solve water scarcity and inclement weather problems. We develop and incorporate radar validation, weather-resistant UAS, numerical w

Headquartered in Conyers, Georgia, Batchelor & Kimball takes pride in partnering with our clients to deliver excellent results from engineering and construction to operations and maintenance. We offer design/build and turnkey construction services, including teaming with subcontractor partners. If y

Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Departmen

ABOUT ROCKET LAB Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more – all with the goal of opening access to space. The rockets and satellites we build and launch enable some of the m