Design Engineer III (Wire Harness Routing)

Sumitomo Electric Group
Saline, MI

Description

Position at Sumitomo Electric Wiring Systems, Inc.

Work Location: Saline, Michigan

This is a Hybrid position, which combines both in office and off-site work.Associates are required to work at least three days in the office each week, but also have the flexibility to work off-site.

BASIC PURPOSE:

This engineer will support guest engineer / design-in work with Toyota. This engineer will support next generation electrical platform development for customer’s vehicle model. It is preferable for an experienced engineer with an understanding of automotive design development, scheduling and vehicle packaging. The new engineer will have a temporary training period at SEWS Detroit Technical Center prior to becoming part of a development team in Toyota Technical Center as design-in. The member will have harness routing design responsibility.

RESPONSIBILITIES:

  1. Creates, updates and manages 3D and 2D design files on Toyota's data management system throughout the developmental phases of assigned projects.
  2. Works closely with other internal departments at Sumitomo and Toyota, in order to maintain the communication levels necessary for project success.
  3. Serves as the lead routing engineer of Sumitomo for assigned projects, including the development of the project schedule and monitoring the status of reporting engineers and their open issues.
  4. Visits SEWS' manufacturing plants at planned stages of the project to review harness quality and workability and to explain harness critical points to manufacturing members.
  5. Visits Toyota's manufacturing plants through the customer's RE (Resident Engineer) program to investigate quality and workability problems in the vehicle and apply effective countermeasures.
  6. Understands design quality controls and applies them throughout the harness development process in order to achieve excellent design quality.
  7. Understands project development schedules and follows it in order to reach each milestone in a timely manner.
  8. Responsible for understanding Toyota Standards and design procedures and following them closely throughout the course of assigned projects.
  9. Responsible for understanding SEWS wire harness design standard and applying them to initial harness development and harness evaluations.
  10. Understands harness routing design deeply and familiar with circuitry and component design to support in R & D for next generation Toyota vehicles.

QUALIFICATIONS/REQUIREMENTS:

Bachelor's degree in Mechanical Engineering, Electrical Engineering or related field.

5+ years of experience preferably in wire harness design or electrical system design and/or at minimum general automotive design.

Applicant to be able to oversee up to 5 engineers by checking their work, give technical advice and provide mentorship.

Knowledge of CAD design is strongly desired, specifically use of CATIA software is preferred but not required.

Primary location for work will be on-site at Toyota Technical Center in York Township.

Japanese bilingual capability is desired but not required.

Applicant must be willing to travel.

About Sumitomo Electric Wiring Systems, Inc.

Sumitomo Electric Wiring Systems, Inc. (SEWS) is part of the Sumitomo family of companies, a 400 year old brand with a reputation for quality and reliability. With the support of facilities throughout North America, SEWS has been delivering innovative solutions to automakers for over 30 years, and is a leading supplier of electrical distribution systems, components and electronics. SEWS is committed to technical development worldwide and with a global network of resources, is able to deliver a truly competitive advantage to each of our customers. Our associates are what drive Sumitomo’s continued growth, which is why we proudly offer a competitive salary and comprehensive benefits package, including Medical, Dental, Vision, Disability, Life, 401(k) with match, tuition benefits, paid holidays and vacation.

To learn more about us, please visit www.sewsus.com.

Follow Us on LinkedIn: https://www.linkedin.com/company/sumitomo-electric-wiring-systems


About the Sumitomo Electric Group

Since the founding of Sumitomo Electric Industries, Ltd. in 1897 with copper wire production, we have developed many new technologies and products through innovative R&D activities based on Sumitomo Electric manufacturing technologies for electric wires and power cables. With more than 350 subsidiaries worldwide, we continue to introduce a wide variety of products that fulfill the expectations of society, in five business fields: Automotive, Information & Communications, Electronics, Environment & Energy, and Industrial Materials. We are a Fortune global 500 company.

To learn more about Sumitomo Electric Group, please visit http://global-sei.com.

Follow Us on LinkedIn: http://www.linkedin.com/company/sumitomo-electric


**Interested Candidates Should Submit Cover Letter and Salary History When Applying.** An Equal Opportunity Employer M/F/D/V

Posted 2026-01-28

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