Jobs › Plexus

Product Engineer

Plexus · Neenah, WI · $70,300–$105,500 a year · Full time

Posted Aug 27, 2026 · We last checked this listing on Oct 6, 2026

Apply at Plexus

Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a technical problem you solved in school, an internship or a job, and how you knew you'd really fixed it.

What they are checking: Whether they verify fixes with data, not just stop when the symptom goes away.

Tell me about a time you had to explain a technical issue to someone without an engineering background.

What they are checking: Whether they can communicate clearly with buyers, planners and customers who need answers, not jargon.

What would you do

A customer's drawing and bill of materials don't match. What do you do?

What they are checking: Whether they stop and get the customer to clarify, rather than picking one and building the wrong thing.

Production says your new work instruction is confusing. How do you respond?

What they are checking: Whether they take feedback from the floor seriously and fix the instruction, rather than blaming operators.

How do you handle an engineering change that arrives while product is already being built?

What they are checking: Whether they think about what's on the line and in stock, so mixed or wrong builds don't happen.

About the work

At a contract manufacturer, a product engineer sits between the customer and the factory. How would you describe that job in your own words?

What they are checking: Whether they understand they support someone else's design and make it buildable, rather than designing products themselves.

Walk me through how you'd troubleshoot a circuit board that fails functional test.

What they are checking: Whether they work logically from symptoms to cause, using schematics, test data and measurements.

How do you read a bill of materials and an assembly drawing to plan a build?

What they are checking: Whether they can work from customer documents accurately, which is the core of product engineering at an EMS company.

What do you know about design for manufacturability, and can you give an example of a design choice that makes assembly harder?

What they are checking: Whether they can spot designs that cause defects or slow builds, so they can raise them with customers.

Why do medical and aerospace customers care so much about documentation and change control?

What they are checking: Whether they understand that regulated products need traceable, approved changes because failures can hurt people.

Practice this interview out loud.

Offer builds a real interview for this exact role at Plexus from your resume and this job description, asks the questions one at a time, and tells you what landed. The first one is free.

Practice this out loud

The full job description

As published by Plexus.

About us: At Plexus, our vision is to help create the products that build a better world. Driven by a passion for excellence, we partner with leading Aerospace/Defense, Healthcare/Life Sciences and Industrial companies to design, manufacture and service some of the world’s most transformative products, including advanced surgical systems, diagnostic instruments, healthcare imaging equipment, mission critical aerospace systems, and electric vehicle (EV) charging solutions. Visit Plexus.com to learn more about our unwavering commitment to our vision. When we invest in our people, we invest in building a better world. With a vision rooted in the wellbeing and inclusive engagement of our team members, our customers, their end users and our communities, people are the heart of what we do and who we are. It is our values that unite us and guide us in everything that we do, including how we operate, behave and interact to foster a workplace where every team member feels valued and empowered to contribute their best. Our values include: Growing our People, Building Belonging, Innovating Responsibly, Delivering Excellence and Creating Customer Success. As a team member, you will engage in impactful work through global collaboration and the use of emerging technologies, join an inclusive culture where every team member is valued and working toward a greater purpose, and be empowered to reach your full potential through various development programs designed to accelerate your growth. Plexus offers a comprehensive benefits package designed to support team members' wellbeing, including medical, dental, and vision insurance, paid time off, retirement savings, and opportunities for professional development. We also prioritize work-life balance and offer a variety of perks to enhance the team member experience. For more information, visit our US benefits website at usbenefits.plexus.com . Our commitment to pay range transparency fosters an equitable workplace, where everyone can feel valued. The annual compensation range for this position is stated below. The salary offered within this range will be based upon the geographic location, work experience, education, licensure requirements and/or skill level. Salary Range: $70,300.00 - $105,500.00 Purpose Statement: This role is responsible for maintaining equipment, validating processes, managing technical communication for products, designing and optimizing new product processes, and overseeing assigned manufacturing processes while adhering to quality, delivery, and cost targets. Key Job Accountabilities: • Develops Manufacturing solutions / Provide services that are high-quality, cost-appropriate, and satisfy the customer's requirements while establishing an area of technical specialty and mentoring others on the team (in-discipline). • Utilizes appropriate tools and equipment to perform necessary work including creation, analysis, and verification. • Demonstrates expertise in multiple phases/ processes of the full Plexus Manufacturing process/ product Requirements & Specifications as it applies to their role. • Demonstrates the ability to work independently within at least one phase/ process for the Manufacturing Process/ Product, without direction from mentors or functional management, as it applies to their role. • Produces comprehensive project documentation in accordance with the quality and change management procedures and guidelines, as it applies to their role. Education/Experience Qualifications: • Bachelor’s Degree with 4 or more years of related experience is preferred. An equivalent combination of education and/or experience will be considered. Other Qualifications: • Intermediate Computer Skills • Intermediate Decision Making, Problem Solving Skills • Intermediate Verbal and Written Communications Skills • Strong Analytical and statistical analysis Skills; Statistical Process Control Software Skills • Proactive and Basic Cross-Discipline Development Knowledge • Understand Structured Design • Ability to develop good working relationships with team members and customers • Lab tool/ test/measurement equipment experience preferred This document does not represent a contract of employment and is not intended to capture every possible assignment the incumbent could be asked to perform. We are pleased to provide reasonable accommodations to individuals with disabilities or special requirements. If you need an application accommodation, please contact us by email at GHQ.TA@plexus.com . Please include your contact information and clearly describe how we can help you. This email is for accommodation requests only and cannot be used to inquire about the status of applications. We are an Equal Opportunity Employer (EOE) and do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Some offers of employment are contingent upon successfully passing a drug screen and/or background check.

Apply at Plexus