Jobs › Marmon Holdings

Senior Sealed System Engineer

Marmon Holdings · Carol Stream, IL · Full time

Posted Sep 11, 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 field failure in a sealed system you helped diagnose. What was the root cause?

What they are checking: Whether they can trace failures to design causes like oil return, leaks or contamination.

Tell me about a project you led with cross-functional teams. How did you keep it moving?

What they are checking: Whether they can lead execution across design, manufacturing and quality.

How do you share technical knowledge with the rest of the engineering team?

What they are checking: Whether they help build team expertise as a senior subject-matter expert.

What would you do

Manufacturing reports brazing leaks on a new line. What do you do?

What they are checking: Whether they work with production to fix the process and protect product quality.

How do you balance energy efficiency targets against cost and reliability?

What they are checking: Whether they can make trade-offs that meet regulations without hurting the product.

About the work

Walk me through a refrigeration sealed system you designed. How did you choose the compressor, condenser and evaporator?

What they are checking: Whether they can size and match components to a real cooling load.

What refrigerants have you designed with, and how do regulatory changes affect your choices?

What they are checking: Whether they understand low-GWP refrigerant transitions and the safety rules for flammables like R290.

How do you decide on the right refrigerant charge and expansion device for a system?

What they are checking: Whether they understand the effects of charge and metering on performance and reliability.

What testing would you run to validate a new cooling system before production?

What they are checking: Whether they know performance, pull-down, energy and reliability testing under real conditions.

How do you design a system to perform in a hot, crowded commercial kitchen?

What they are checking: Whether they account for high ambient temperatures and frequent door openings.

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The full job description

As published by Marmon Holdings.

Marmon Foodservice Technologies, Inc. As a part of the global industrial organization Marmon Holdings—which is backed by Berkshire Hathaway— you’ll be doing things that matter, leading at every level, and winning a better way. We’re committed to making a positive impact on the world, providing you with diverse learning and working opportunities, and fostering a culture where everyone’s empowered to be their best. About The Job Though you may not know us by name, you’ve most likely enjoyed meals and refreshments supported by our industry-leading brand portfolio. For decades, we’ve designed and manufactured foodservice equipment for some of the world’s biggest, most recognized consumer brands. We are driven to innovate with a clear purpose in mind: to enhance the eating and drinking experience, nourishing the people and communities we serve. As a Senior Sealed System Engineer, you will be responsible for the design, development, and implementation of cooling system engineering solutions for refrigeration products. You will drive collaboration with cross-functional teams, leverage technical strategy and best practices, and lead the successful execution of projects. In this role, you will further develop technical subject-matter expertise while contributing significantly to MFT’s growth and innovation. What You’ll Do • Actively lead and / or participate in project teams focused on New Product Development, Continuous Product Improvement, or Feature Innovation. • Lead the design, testing, and reviews for refrigeration-based sealed systems across all product lines as a functional expert • Lead problem solving activities using 8D methodology to identify root cause of issues and oversee development/implementation of a corrective action plan. • Utilize mathematical and computer-based engineering analyses to design innovative and reliable solutions for cooling systems across many different product types • Develop technical drawings, models, and specifications using engineering software and tools • Conduct testing, collect and analyze data, and interpret test results to evaluate the performance, reliability, and safety of engineering solutions • Identify areas for improvement, troubleshoot technical issues, and propose and implement design modifications of existing product lines • Lead collaboration with cross-functional teams, including engineers, technicians, project managers, and stakeholders, to ensure project goals are met • Stay up to date with the latest advancements, industry trends, and technological innovations in cooling systems, sealed systems, and refrigerated product designs • Actively participate in continuous learning and professional development activities, including attending training programs, workshops, and conferences Who You Are • Independent Self-Starter: Takes prompt, proactive action to accomplish work goals with limited oversight • Collaborative Partner: Uses interpersonal skills to communicate effectively with cross-functional teams • Strategic Thinker: Relies on analytical and problem-solving skills to think strategically and execute tactically • Clear Communicator: Speaks and writes effectively to convey technical information, project requirements, and progress updates to team members and stakeholders Skills/Experience We’re Looking For • Ice maker refrigeration design and system balancing experience • Experience with flammable, low-GWP refrigerants and control system safety. • Strong knowledge and understanding of engineering principles and concepts as they relate to sealed systems and cooling methods • Proficiency in thermal simulation software • Ability to plan and oversee laboratory testing with hands-on approach to prototype development • Ability to organize and manage multiple sub-projects in parallel, or multiple system variants in different stages of a project • Strong attention to detail and accuracy in work • Effective interpersonal skills and the ability to convey technical information clearly • Ability to work both independently and collaboratively in a team environment Required Qualifications • Bachelor’s or Master's in Engineering or a related field • 10+ years of relevant experience in an engineering role Benefits We support your well-being with comprehensive and easy-to-use benefits that you’ll be eligible to enroll in on your first day of employment. Here are some of the highlights: • Medical, Dental, Vision, and Prescription Drug insurance plans • Access to a Health Advocate who is an expert in Marmon’s health plan and can help you select the best health benefits for you and your family • Tax advantaged spending accounts for health and dependent care expenses • Wellness programs and resources including Telehealth, Mental Health, Fitness, and Family Planning • Generous paid time off for personal use, holidays, and parental leave • Company-sponsored life insurance • 401(k) with fully vested company match; Marmon may also make an additional annual discretionary contribution to your account, whether or not you contribute on your own • Financial and retirement advising About Marmon Holdings Marmon Holdings, Inc., a Berkshire Hathaway company, comprises 11 groups and more than 100 autonomous businesses with total annual revenue of $10 billion. Marmon’s 28,000-plus team members are celebrating the company's 70th anniversary in 2023 and helping write the next chapter of Marmon's story. Pay Range: 84,000.00 - 126,000.00 We offer a comprehensive benefits package that may include medical, dental, vision, 401k matching, and more! Following receipt of a conditional offer of employment, candidates will be required to complete additional job-related screening processes as permitted or required by applicable law . We are an equal opportunity employer, and all applicants will be considered for employment without attention to their membership in any protected class. If you require any reasonable accommodation to complete your application or any part of the recruiting process, please email your request to careers@marmon.com, and please be sure to include the title and the location of the position for which you are applying.

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