Mechanical Design Engineer III

About IEM

Industrial Electric Mfg. (IEM) is the largest independent full-line manufacturer of custom power distribution systems in North America. Founded more than 75 years ago in Fremont, California, IEM grew alongside Silicon Valley and today operates over 1.7 million square feet of manufacturing capacity. With $1B+ in annual sales and 10,000+ commissioned projects across technology, data centers, commercial, energy, utilities, healthcare, industrial, and infrastructure markets, IEM continues to deliver exceptional product quality, dependable service, and the flexibility to meet complex technical requirements at scale.

The Mechanical Design Engineer III supports the design-to-order (DTO) engineering process for IEM’s medium voltage power distribution products. This role involves extensive 3D modeling and 2D drafting, creating and maintaining BOMs, and collaborating with cross-functional teams to meet project specifications and timelines. The Mechanical Design Engineer III builds on foundational engineering skills to contribute to project success while developing expertise in DTO project cycles, designing for manufacturability, and ensuring compliance with industry standards.

• Designing and customizing mechanical solutions to meet client-specific requirements, focusing on manufacturability and compliance with industry and internal standards.
• Creating 3D models and 2D drawings, including client coordination drawings and fabrication documentation.
• Creating and maintaining BOMs for standard product line assemblies and DTO project workflow.
• Supporting collaboration with clients, project managers, and internal teams to ensure designs are aligned with project goals and timelines.
• Providing technical support during manufacturing and installation phases to ensure seamless project execution.

• Design to Order Project Workflow:
  • Review customer acceptance documentation for accuracy.
  • Ensure project deliverables are on time and indicate early when tasks are not achievable.
  • Ensure project designs comply with customer specifications, industry standards, manufacturability requirements, and internal quality benchmarks.
  • Conduct self-reviews and participate in peer reviews to maintain high-quality deliverables.
  • Support DTO workflow templating and automation initiatives to increase project throughput and reduce errors.
• Collaboration And Support:
  • Support senior group engineers, manufacturing engineers and plant personnel to refine designs for manufacturability.
  • Work with manufacturing engineers to develop manufacturable design standards.
  • Facilitate communication between design and manufacturing teams across multiple sites to align processes.

• Experience working in a design-to-order or custom engineering environment is strongly preferred.
• Ability to manage multiple projects and prioritize tasks effectively in a fast-paced environment.
• Familiarity with medium voltage switch gear, utility systems, or the power industry is preferred.
• Exposure to sheet metal design is preferred.
• Strong attention to detail, critical thinking, and problem-solving abilities.
• Proficiency with Solid Works, AutoCAD, or Pro E;
  Finite Element Analysis (FEA) experience is a plus.
• Knowledge of IEEE/ANSI C37.20 and UL891/1558 design guidelines and NFPA
  70E are desirable.
• Strong verbal and written communication skills.

• BSME or equivalent required.
• 3-5+ years of experience in mechanical design, preferably in DTO or custom engineering.
• Candidates with EIT certification on the path to Professional Engineer (PE) licensure are preferred.

The salary range for this role is $92,000-$110,000 per year, based on location, experience, and qualifications.

At IEM, you’ll join a team that powers some of the world’s most ambitious projects. We’re engineers, makers, and problem-solvers who thrive on tackling complex challenges and delivering solutions that keep industries moving forward. If you’re driven, collaborative, and ready to make an impact, we’d love to hear from you. Your creativity and passion can help us achieve great things—come be part of the journey.

Learn more about IEM at

We offer comprehensive and competitive benefits package designed to support our employees' well-being, growth, and long-term success. View a snapshot of our benefits at

Beware of recruiting scams. IEM never charges candidates fees, and all recruiter emails come from an  address. If you suspect fraudulent activity, do not share personal information and report it to us at

IEM does not discriminate against any applicant based on any characteristic protected by law.

Information collected and processed as part of your IEM Careers profile, and any job applications you choose to submit is subject to IEM's Workforce Member Privacy Policy.