165 principal engineer jobs at 46 companies in Marengo, IL
2w
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Principal Engineer - Gas Detection
Northbrook, Illinois, United States
$142k-$155k/yr HybridFull Time
5+ YOEBachelor’s degree in engineering, 5–10 years of gas and vapor detection experience, NFPA 72 knowledge, safety engineering expertise, technical writing, presentation, project management, and communication skills.
NFPA 72, ISO Standards, ULSE Standards, Certification Requirement Decisions (CRDs), Technical Guidance Documents (TGDs), Standardized Appendix Pages (SAPs), Follow-up Inspection Instructions (FUIIs)
3w
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Principal Engineer, R&D
Deerfield or Illinois or Chicago
$112k-$154k/yr HybridFull Time
5+ YOEBachelor's degree in engineering and 5+ years in product development; expertise in design documentation, manufacturing transfer, 3D CAD, prototyping, testing, and regulated design controls.
3D CAD, FDA, ISO, IEC, CAPA, DHF, TQM, ESPP, EAP
3w
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Sr Principal Engineer, Automation Projects
Round Lake, Illinois, United States
$128k-$176k/yr OnsiteFull Time
8+ YOEBachelor of Science in Engineering required (Mechanical preferred),8+ years engineering experience, SolidWorks experience, aseptic/cGMP manufacturing preferred, project leadership, domestic/international travel up to 20%.
SolidWorks
2mo
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Principal Engineer Process
Rolling Meadows, Illinois, United States
$98k-$148k/yr OnsiteFull Time
5+ YOEBachelor’s or Master’s in engineering with 3-5 years (MS: 3+ yrs) in opto-mechanical/EOIR; ability to obtain Secret clearance; US citizenship; 10% travel; on-site Rolling Meadows, IL.
1mo
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Principal Engineer, Software Engineering
Rockford, Illinois, United States
$135k-$205k/yr OnsiteFull Time
8+ YOEBachelor's in CS/EE/EElec and 8+ years (or Master's and 5+ years); 5+ years embedded C; 3+ years DO-178C; software for generator/bus power control; authorized to work in U.S. without sponsorship.
embedded C, DO-178C
3d
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Principal Engineer - Product Design
Mount Prospect or Illinois
$120k-$150k/yr HybridFull Time
Bachelor's degree or equivalent experience; extensive customer-centric product development experience; advanced SolidWorks or Creo 3D design proficiency; leadership across multidisciplinary global teams.
SolidWorks, Creo, CAD
3mo
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Principal Controls Engineer (Team Lead)
Oak Creek, Wisconsin, United States
OnsiteFull Time
8+ YOE8+ years of progressive controls engineering experience in manufacturing; strong PLC/HMI, industrial networking, project leadership
Allen-Bradley PLC, Siemens PLC, HMI/SCADA, FactoryTalk View, Ignition, AutoCAD Electrical, EPLAN
4w
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Principal Engineer- Permits
Libertyville, Illinois, United States
$95k-$107k/yr OnsiteFull Time
6+ YOEBachelor's in Civil Engineering, Illinois PE license, minimum 6 years experience, valid driver's license, regulatory and program management skills, strong communication and problem-solving.
2d
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Principal Engineer, Salesforce
North Chicago, Illinois, United States
$125k-$237k/yr HybridFull Time
8+ YOERequires a bachelor's degree with 8 years, master's with 7 years, or PhD with 3 years of relevant experience; deep Salesforce CRM architecture, engineering, integration, and leadership experience.
Salesforce, Service Cloud, Experience Cloud, Health Cloud, Life Sciences Cloud, Apex, Lightning Web Components (LWC), Flows, REST, SOAP, Salesforce Data 360, Agentforce, Agentforce Vibes, DevOps, CI/CD/CT
1mo
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Sr. Principal Engineer, R&D - E2E Complex Processing Project Delivery
Glenview or Warrendale
$121k-$151k/yr HybridFull Time
8+ YOEBachelor's in engineering required (MS/PhD preferred), minimum 8 years R&D/engineering experience in food, consumer goods or similar; experience with pilot trials, scale-up, CQV/FMEA/CPRA, project management and cross-functional execution.
MS Project, Smartsheet, Jira, Microsoft Excel, SAP
2mo
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Sr. Principal Engineer, R&D - E2E Complex Processing Project Delivery
Glenview or Warrendale
$121k-$151k/yr HybridFull Time
8+ YOEBachelor's in engineering required (MS/PhD preferred), 8+ years R&D/engineering experience in consumer goods/food/pharma, hands-on end-to-end processing project delivery, CQV/FMEA/CPRA experience, project tool and ERP proficiency.
CQV, FMEA, CPRA, Microsoft Project, Smartsheet, Jira, Microsoft Excel, SAP
3mo
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Principal Product Design Engineer - United States
Lisle, Illinois, United States
$125k-$170k/yr OnsiteFull Time
10+ YOEBachelor’s in Mechanical Engineering; 10+ years in electro-mechanical design; experience with electronics product development, FEA, GD&T; advanced 3D CAD; experience with manufacturing processes.
Siemens NX, FEA, GD&T, 3D CAD, Mechanical design tools
5d
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Principal Engineer Data Engineering
Irvine or Colorado Springs or Irving or Livingston or Tampa or Rolling Meadows or Alpharetta
$121k-$231k/yr RemoteFull Time
6+ YOEBachelor's degree or equivalent experience; 6+ years relevant experience, including 5+ years ETL/ELT development; expertise in data modeling, warehousing, architecture, SQL, Python, AWS and/or GCP.
SQL, Python, AWS, GCP, Apache Airflow, Talend, Teradata, Git, Jenkins
3w
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Principal Mechanical Engineer
Westchester or North Kansas City or Indianapolis
HybridFull Time
Extensive mechanical engineering experience for utilities and process equipment across multi-site manufacturing; bachelor’s or master’s in mechanical engineering or equivalent experience; subject matter expertise in material handling, rotating equipment, boilers, tanks, and mechanical design.
1mo
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Principal Chemical Engineer
Des Plaines or Rosemont or Houston
$177k-$222k/yr HybridFull Time
10+ YOE10+ years in refining/petrochemicals, bachelor’s in chemical engineering, strong problem-solving and communication, ability to travel up to 40%, U.S. Person required.
3d
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Principal Mechanical Engineer
Lombard, Illinois, United States
$145k-$185k/yr HybridFull Time
12+ YOEBachelor's degree in mechanical engineering, active PE license, and 12+ years of experience. Requires complex project leadership, technical review, mentorship, client communication, travel, and US work authorization.
HVAC, ASME, ASHRAE, AWWA, NFPA, API, International Mechanical Code (IMC), International Plumbing Code (IPC), International Building Code (IBC), AutoCAD, Revit
2mo
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Principal Engineer Mechanical
Downers Grove, Illinois, United States
$166k-$237k/yr OnsiteFull Time
15+ YOEBachelor's in mechanical engineering, PE license, 15+ years in Power/Refining/Chemical, strong background in heat exchangers, pumps, ASME vessels/piping, equipment specification (CTG, STG, HRSG), EPC execution knowledge, leadership and field experience.
2mo
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Principal Software Engineer
Westchester, Illinois, United States
$171k-$257k/yr RemoteFull Time
12+ YOESenior/principal-level data engineer with deep Azure BI/data stack expertise (Microsoft Fabric, Synapse, Power BI), expert Python and SQL, architecture and platform design, and strong communication and mentoring skills.
Microsoft Fabric, Azure Synapse Analytics, Power BI, Azure, Python, SQL
3w
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Principal AI Engineer - Aerospace & Defense
Itasca, Illinois, United States
$15k-$180k/yr FieldFull Time
Hands-on experience building and shipping production AI and mobile solutions, expertise in prompt engineering, RAG, MLOps, forward-deployed integrations, full-lifecycle engineering, and technical leadership at principal level.
Retrieval-augmented generation (RAG), MLOps, CI/CD, iOS, ERP, CRM, IoT
1w
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Principal Product Usability Engineer
Libertyville, Illinois, United States
$142k-$204k/yr OnsiteFull Time
12+ YOEBachelor's degree and 12–15 years of related experience, with expertise in human factors, usability engineering, user-centered design, medical devices, research, analysis, mentoring, and cross-functional collaboration.
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