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Test Technician Sr

Plexus · Neenah, WI · $49,400–$74,000 a year · Full time

Posted Sep 25, 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

As a senior tech, how have you helped newer technicians get better?

What they are checking: Whether they share knowledge and coach others, which is expected at the senior level.

Tell me about the hardest failure you ever solved. What made it hard?

What they are checking: Whether they have real depth and persistence, shown by how they talk through a difficult case.

What would you do

The same failure keeps showing up on multiple boards. What do you do beyond fixing each one?

What they are checking: Whether they raise patterns to engineering and quality instead of quietly repairing units one at a time.

You suspect the test fixture is causing false failures. How do you prove it?

What they are checking: Whether they use known good units and fixture checks to separate product issues from test setup issues.

Production is pushing to ship and you have a unit that passes but behaves oddly. What do you do?

What they are checking: Whether they hold back a questionable unit and escalate rather than letting schedule override their judgment.

About the work

Walk me through how you troubleshoot a board that fails functional test, from first look to root cause.

What they are checking: Whether they have a disciplined method using schematics and measurements instead of trial and error part swaps.

Which test equipment are you most comfortable with, like oscilloscopes, DMMs, power supplies or ICT systems?

What they are checking: Whether their hands-on experience matches what a senior tech will use daily without close supervision.

How do you read a schematic to trace down a failing signal?

What they are checking: Whether they can follow circuits to narrow down failures, the core skill that separates senior technicians.

Why is documenting repairs so important for medical and aerospace products?

What they are checking: Whether they understand traceability requirements and that undocumented rework can make a product unusable.

How do you protect boards from ESD damage while you work on them?

What they are checking: Whether they follow ESD controls carefully, since careless handling creates hidden defects.

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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: $49,400.00 - $74,000.00 Purpose Statement: To ensure the quality and reliability of Plexus products by meticulously operating, troubleshooting, and maintaining test equipment. Through collaborative problem-solving and continuous learning, strive to maintain efficient testing processes, identify and resolve product defects, and ultimately contribute to exceeding customer expectations and supporting Plexus's commitment to quality. Key Job Accountabilities: • Develops / executes 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) and applies process improvement or troubleshooting as it applies to their role. • Guiding use of appropriate tools to perform necessary work including creation, analysis, and verification of documentation, programs, models, processes or production as it applies to their role. • Serves as a technical and/or project team lead with discipline-specific understanding of how they support the full Plexus Manufacturing processes / Product Requirements & Specifications / cross discipline OR supplier coordination, as it applies to their role. • Demonstrates the ability to lead others, executing responsibilities in accordance with good manufacturing practices and Plexus' Manufacturing Processes AND provide support to direct production line operators as it applies to their role. • Expertise in Understanding of Equipment / Process control / Safety / Risk Awareness / setup awareness / operation of, as it applies to their role. Education/Experience Qualifications: • Associate’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: • N/A Physical Requirements: • N/A Travel Requirements: • N/A 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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