Mechanical Engineer - Co-op, Spring 2026 (January - June)

Cooling performance limits high-power computing, semi-conductor fab, cell networks, photonics, power electronics, and most of our digital world. Alloy Enterprises enables customers to break through these constraints with novel complex metal components that dramatically improve heat dissipation in high-performance systems. Alloy’s patented Stack Forging process enables complex micro-geometries, resulting in single-piece, leak-tight parts that deliver superior cooling performance, lower pressure drops, and exceptional reliability. Founded in 2020, Alloy is a 45-person hardtech startup that has raised over $50M in capital and is shipping components to customers manufacturing servers, lasers, semiconductor equipment, and defense systems. About the Role We are looking for a Mechanical Engineering Co-op to help with the development of sub-systems and testing. Strong communication, flexibility, and the desire to “wear many hats” will all be essential skills for any successful applicant. You will be expected to teach yourself new skills and apply them to complete your tasks and projects, and you will receive guidance and mentorship along the way. Responsibilities : Design, build, and operate mechanical systems, test fixtures, and bespoke production equipment.

Develop system requirements for projects with full time technical staff

Sub-system level analysis, design, and assembly

Document design decisions and test results quickly and effectively

Develop, document, and execute mechanical test methods

CAD modeling, tolerance analyses, and 2D drawings

Use Alloy’s hardware and software to build customer parts

Create tickets, provide feedback, and debug software, process, and hardware issues

Requirements : You take ownership of your projects, completing tasks efficiently and effectively

You are adaptable and excel when working in a fast-paced environment

Enjoy the gritty details of part design, material selection, and drawing

Past industry co-ops or internships strongly desired

Pursuing a degree in Mechanical, Industrial, or Manufacturing Engineering

Experience with rapid prototyping: 3D printing, mill, lathe, laser cutting, hand tools

SolidWorks, and experience making and modifying 2D Drawings

Firm understanding of mechanical engineering fundamentals

Basic SW experience is a plus: Python, linux, Jira, git, or PLC programming

Additional requirements This position will require access to information subject to control under U.S. export control laws and regulations, including the Export Administration Regulations (“EAR”) and International Traffic in Arms Regulations (“ITAR”). Please note that any offer for employment will be conditioned on authorization to receive controlled items without sponsorship for an export license. Regarding Sponsorship Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa, including H-1B, H-1C, H-2A, H-2B, H-3, F-1 or OPT at this time. Equal employment opportunity We are committed to creating an equitable and inclusive environment for all our employees and seek to build a team that reflects the diversity of the people we hope to serve with our products. We are proud to be an equal opportunity employer.

#J-18808-Ljbffr