Mechanical Designer

Company: i3 Product Development
Location: Sun Prairie
Posted on: April 2, 2026

Job Description:

i3 Product Development is a place for people who love to build, learn, and stay curious, especially when the problems are complex. We’re a high-performing team of designers, engineers, and problem solvers working together under one roof to turn ideas into real products. With 100 projects each year across medical, agriculture, consumer, industrial, health & wellness, and on- and off-road recreation industries, no two days are the same. You’ll take real ownership of your work, collaborate closely with teammates, and work directly with clients to help deliver solutions that truly delight. We value curiosity, trust, and people who take pride in delivering work that makes a meaningful impact. About the Role We’re looking for a Mechanical Designer to join our product development team at i3. This role sits at the center of how ideas become real: working closely with Industrial Designers, Mechanical and Electrical Engineers, and our clients to design thoughtful, manufacturable solutions. Whether you’re early in your career and excited to learn fast across many industries, or a more senior designer looking for ownership, variety, and influence, this role offers the chance to do meaningful, hands-on work from concept through production. With in-house prototyping and a steady stream of diverse projects, you’ll see your designs move quickly from screen to shop floor. We support our team with strong benefits—including a $0 deductible health plan, meaningful retirement match, and a stock purchase program—so you can focus on doing great work and growing your career. What You’ll Do Design and develop mechanical solutions from early concept through production Create detailed 3D models and drawings using SolidWorks Collaborate with cross-functional teams to deliver integrated product designs Work directly with client engineering and manufacturing teams Apply GD&T principles and perform tolerance stack-ups as appropriate to the design Coordinate with tooling and manufacturing vendors Support and mentor junior designers and engineers (scope based on experience) Continue building your skills through varied project work and shared learning Who We’re Looking For Associate degree in Mechanical Design or equivalent hands-on experience Strong proficiency in SolidWorks (or comparable CAD tools) Solid understanding of manufacturing processes such as injection molding, die casting, machining, and sheet metal fabrication Working knowledge of GD&T and design-for-manufacturing principles A demonstrated history of keen attention to detail Clear communicator who works well across disciplines Comfortable balancing multiple projects in a fast-paced environment Nice To Have Experience working directly with clients Exposure to multiple industries or product types Track record of seeing products through to launch Interest in mentoring or technical leadership Deeper experience (7 years) owning complex designs end-to-end Why i3 At i3, variety is the norm. You’ll work on dozens of products each year, collaborate with smart, supportive teammates, and have real ownership over your work. We value curiosity, follow-through, and people who care about both the details and the bigger picture. Benefits We believe great work is supported by taking care of our people. Our benefits are designed to support your health, stability, and long-term goals: Health insurance with a $0 deductible and employee premiums as low as $9 per pay period Dental and vision coverage 401(k) with dollar-for-dollar match up to 6% Employee Stock Purchase Program Company-paid short- and long-term disability insurance Company-paid life insurance (2× annual salary) Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA) Emergency Assistance Fund Charitable Match Program

Keywords: i3 Product Development, Rockford , Mechanical Designer, Engineering , Sun Prairie, Illinois