Principal Jobs in Naperville, IL
Principal jobs in Naperville, Illinois are open across the metro, with employers like Ecolab, FUSION ENGINEERING, and Oncourse Home Solutions hiring at every experience level. See the openings below and apply to the ones that match your experience.
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Fusion Engineering is seeking a polymer scientist to join our multi-disciplinary scientific and engineering consulting team. We serve industrial, insurance, and litigation clients across the country and throughout the world. Our team assists clients in “making the complex simple” by providing technical expertise across a range of subject matters including design analysis, post-accident investigation and reconstruction, failure analysis, and intellectual property matters. Candidates must possess a strong work ethic with excellent interpersonal skills and the ability to communicate effectively.
Job responsibilities:
- Inspect, analyze, and test polymers and materials used in applications ranging from consumer products to construction materials and medical devices
- Analyze the root cause of a wide variety of failures arising in development and/or manufacturing of products
- Travel to accident scenes or client sites to perform inspections, gather data, and secure evidence
- Evaluate existing materials to draw conclusions and/or identify an action plan
- Manage projects from inception to completion, providing guidance to clients
- Participate on multi-disciplinary teams to analyze complex issues
- Prepare concise written reports of analysis and conclusions
- Provide testimony of findings at deposition or trial
- Author technical papers for publication in peer-reviewed journals
- Present at technical conferences
- Develop client relationships and promote business growth
- Assist in marketing technical capabilities to clients and the scientific community
Required qualifications:
- Master’s degree or PhD in Chemistry, Materials Science, Chemical Engineering or related field
- Understanding of polymer structures and properties, including polymer mechanics, melt- and solution-based rheology, viscoelasticity, and possession of detailed knowledge of the characterization techniques needed to explain such properties
- Experience in polymer materials analysis techniques including mechanical properties (tensile, compression, flexure), creep and fatigue, melt- and solution-based rheology, thermal analysis, etc.
- At least 10 years of relevant experience, preferably including experience in consulting and/or testifying
- Excellent written and verbal communication skills
- The ability to work at a fast-pace in a team environment and independently
- Strong organizational skills and ability to manage several projects simultaneously
- Proficiency in statistics preferred
- Attention to detail
Travel requirements: Up to 35%, as required by project work
Location: Naperville, Illinois
Fusion Engineering offers competitive salaries and benefits
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Who's Hiring
- Ecolab7

- FUSION ENGINEERING5
- Oncourse Home Solutions3

- RXO2

- 3Cloud2

Top Industries Hiring
- Waste Management & Environmental Services10
- Consulting & Professional Services5
- Technology & Software4
- Retail1
- Fintech1
Principal Jobs in Naperville: Frequently Asked Questions
How many principal jobs are there in Naperville?
There are 35+ principal openings in Naperville, Illinois on Migrate Mate as of June 2026. New positions post regularly as Naperville employers hire.
Which companies hire principals in Naperville?
Naperville principal roles are posted by Ecolab, FUSION ENGINEERING, and Oncourse Home Solutions and others right now, based on current listings on Migrate Mate as of June 2026.
Are there remote principal jobs in Naperville?
Yes. About 56% of principal openings tied to Naperville are remote or hybrid as of June 2026. The rest are on-site roles based in and around Naperville.
Which industries hire the most principals in Naperville?
Most principal openings in Naperville sit in Waste Management & Environmental Services, Consulting & Professional Services, and Technology & Software, per current listings on Migrate Mate as of June 2026.
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