Jobs › Plexus

Manufacturing Engineer

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

Posted Sep 22, 2026 · We last checked this listing on Oct 6, 2026

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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

Walk me through a new product introduction you supported, from the first build to steady production.

What they are checking: Whether they have taken a product into production in a contract manufacturing setting with real customer pressure.

Tell me about a time an operator's idea improved your process.

What they are checking: Whether they spend time on the floor and respect the people who run the process every day.

What would you do

First pass yield on an assembly drops from 98 percent to 90 percent. Walk me through how you find the cause.

What they are checking: Whether they use structured root cause tools and data instead of guessing at fixes.

A customer asks for an engineering change while product is mid-build. How do you manage it?

What they are checking: Whether they control changes carefully so the right revision gets built and tracked.

How do you decide which of several urgent line issues to work on first?

What they are checking: Whether they prioritize by impact on safety, quality and delivery rather than by who is loudest.

About the work

How do you write a work instruction that an operator can follow without asking questions?

What they are checking: Whether they write clear, visual instructions that reduce errors on the shop floor.

How do you review a customer design for manufacturability before it hits the line?

What they are checking: Whether they can spot assembly risks early and push design feedback to the customer.

What lean tools have you used to improve flow or reduce waste, and what results did you get?

What they are checking: Whether they can drive continuous improvement with measurable gains, not just name lean terms.

How do you design or choose fixtures and tooling for an assembly station?

What they are checking: Whether they think about repeatability, ergonomics and error proofing at the station.

How does process validation, like IQ, OQ and PQ, fit into your work on medical products?

What they are checking: Whether they understand validation requirements for regulated healthcare manufacturing.

Practice this interview out loud.

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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 Open to hiring levels I, II & Sr Full pay range: $58,000 - $115,000 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 2 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.

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