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Reliability Engineer

Milwaukee Tool · Brookfield, WI · Full time

Posted Jun 9, 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

Tell me about a time your reliability data changed a design decision.

What they are checking: Whether their work has actually influenced products, not just produced reports.

Tell me about a time you worked with a cross-functional team to fix a reliability problem.

What they are checking: Whether they can work across design, quality and manufacturing to solve problems.

What would you do

Field returns show packs failing early in cold weather. How do you investigate?

What they are checking: Whether they can connect field data to lab testing and find the root cause.

A design engineer pushes back on your test results. How do you handle it?

What they are checking: Whether they can defend findings with data and stay collaborative.

How do you decide when a product is reliable enough to launch?

What they are checking: Whether they can make a clear recommendation based on risk and data.

About the work

How would you build a reliability test plan for a new battery pack?

What they are checking: Whether they can design tests for real use, like cycling, temperature and drops, for energized products.

What failure modes worry you most in lithium-ion battery systems?

What they are checking: Whether they understand risks like thermal runaway, cell imbalance and connector wear.

Walk me through how you'd use a Weibull analysis on life test data.

What they are checking: Whether they can use statistics to predict product life and make decisions.

How do you use DFMEA in the development process?

What they are checking: Whether they use FMEA as a living tool to find and reduce risk early.

How do you design accelerated life tests that still reflect real use?

What they are checking: Whether they understand the limits of acceleration and avoid misleading results.

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The full job description

As published by Milwaukee Tool.

Job Description: Reliability Engineer (NPD) Come be DISRUPTIVE with us! At Milwaukee Tool, our most valued resource is our dedicated team of employees - employees who work with a passion to be the best and an unparalleled pride in their work and in the Milwaukee brand. We know that the only way to sustain growth and success is to value the growth and success of each person within the organization that's why we invest in an individual's growth and development from day one. All our teams touch every step of the process, that is why our Engineering teams are some of the key contributors to our continuous innovations. The fast-paced, agile environment continuously delivers disruptive technologies by providing every team with the resources needed to excel and working directly with End Users to understand how to deliver heavy duty products with high performance. We create Best in Class products by leveraging advanced analysis tools, extensive testing regimes, state-of-the-art manufacturing processes and cross-functional agility. The Reliability Engineer’s primary duties are to utilize engineering skills to contribute to the development and qualification of power tool products. The Reliability Engineer will define the test methods and product requirements needed to develop durable, disruptive, and market-leading products. A successful candidate will bring curiosity, accountability, and strong experience in requirements definition, test development, validation, and data acquisition to the New Product Development team. The Candidate enjoys a fast-paced work environment with excellent visibility and opportunities to grow. Duties and Responsibilities Product Development • Be a subject matter expert in the New Product Development team with respect to test methods, product requirements, user needs, and reliability • Develop Critical to Quality (CTQ) requirements from collaboration with Product Management and participation in User Needs research • Collaborate with Engineering and Marketing to define product specifications with respect to all aspects of reliability, quality, and user needs • Design experimental techniques to improve development and testing efforts • Collaborate with global teams to ensure robust manufacturing and supplier quality and test lab correlation • Track multiple projects simultaneously to ensure adherence to quality, schedule, and the Milwaukee Tool process Testing and Analysis • Develop new test procedures and create test plans to evaluate product performance against user and product requirements • Effectively document test plans, procedures, and best practices for execution in test laboratories • Perform data analysis, post-processing, and visualization of test data • Summarize test results with statistical techniques and present concise, logical, written conclusions • Ensure timely failure reporting and drive root cause analysis and effective corrective/preventative actions Job Requirements • Bachelor’s Degree in Electrical or Mechanical Engineering or related engineering field, preferably with 0-2 years of experience in similar product development, reliability, test, or quality roles • Experience with or desire to learn: • Analytical problem-solving skills and statistical application in areas such as Design of Experiments, sampling techniques, regression, reliability, FMEAs, hypothesis testing • Hands-on experience with data acquisition systems, data analysis, and related software (e.g. Python, nCode Glyphworks, Dewesoft, LabVIEW) • Experience with life data analysis, reliability distributions, statistical analysis, and related software (e.g. Minitab, Reliasoft Weibull++) • Experience in manufacturing quality and root cause analysis (RCA, FRACAS) • Strong communication skills with the ability to influence at all levels with creative problem-solving capabilities • Ability to travel 10% (includes both domestic and international) Milwaukee Tool is an equal opportunity employer.

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