196 principal engineer jobs at 46 companies in Sycamore, IL
1d
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Principal Engineer
North Chicago, Illinois, United States
$110k-$209k/yr OnsiteFull Time
10+ YOEBachelor's degree in engineering, science, or related discipline desired, 10+ years of engineering or operations experience, project management expertise, financial systems competency, and strong collaboration skills.
3w
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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)
4d
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Principal Packaging Engineer
Bedford Park or Indianapolis or North Kansas City
$124k-$165k/yr OnsiteFull Time
Bachelor’s degree in engineering and substantial industrial packaging engineering experience, including bulk powder equipment, mechanical systems, troubleshooting, design, safety, GMP, technical leadership, and cross-functional collaboration.
P&ID, robots, metal detection, force flow packers, screeners, magnets, control systems
4w
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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
1mo
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Principal/Sr. Principal Systems Engineer
Rolling Meadows, Illinois, United States
$109k-$204k/yr OnsiteFull Time
5+ YOESTEM degree with 5+ years (Principal) or 8+ years (Sr Principal) experience, proficiency in systems thinking, model-based systems engineering, simulation/mission modeling, and listed software/tools; U.S. citizenship and active government clearance required.
MATLAB, C, C++, CUDA, VHDL, OpenCL, SysML, Python, Cameo, Rhapsody, AFSIM, STK, BRAWLER, ATCOM, ONESAF, DOORS, ClearCase, ClearQuest
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Principal/Sr. Principal Systems Engineer
Rolling Meadows, Illinois, United States
$109k-$163k/yr OnsiteFull Time
5+ YOESTEM degree with relevant years of experience (principal:5+, sr principal:8+), US citizenship, active Top Secret clearance, systems engineering and model-based concepts experience, proficiency with MATLAB/C/C++/CUDA/VHDL/OpenCL/Python and mission modeling tools.
SysML, Cameo, Rhapsody, MATLAB, C, C++, CUDA, VHDL, OpenCL, Python, AFSIM, STK, BRAWLER, ATCOM, ONESAF, DOORS, ClearCase, ClearQuest, UML
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
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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
1mo
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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.
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
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Principal Chemical Engineer
Denver or Centennial or Des Plaines or Rosemont or Houston or New Jersey or New York or Massachusetts or Washington or Colorado or Connecticut or Hawaii or Illinois or Minnesota or Vermont or Washington, D.C.
$177k-$222k/yr HybridFull Time
10+ YOERequires a bachelor's degree in chemical engineering or related field, 10+ years in refining or petrochemicals, chemical engineering expertise, analytical and troubleshooting skills, and effective collaboration and communication.
UOP Process technologies, Customer Portal
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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
3d
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Principal Engineer Molding
Lake Forest, Illinois, United States
$99k-$199k/yr OnsiteFull Time
5+ YOEBachelor’s degree in engineering or equivalent experience; 5+ years technical experience, including 3+ years in plastic injection or blow molding design and process support; plastics, tooling, and resin expertise required.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint
2w
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Principal Electrical Engineer
Lemont, Illinois, United States
$116k-$181k/yr OnsiteFull Time
8+ YOERequires an electrical or computer engineering degree, 8+ years' experience, Python, embedded Linux, C/C++, electronics design, system integration, network protocols, security, CAD, and control systems expertise.
Python, JavaScript, R, C++, C, embedded Linux, make, shell scripting, TCP, UDP, I2C, UART, SPI, Microsoft?, GUI, CAD
2mo
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Principal Process Engineer
Clearing or Chicago
$101k-$152k/yr OnsiteFull Time
7+ YOEBachelor's in Chemical Engineering (or related), 7+ years chemical manufacturing experience, PSM facility experience, DCS/PLC/HMI knowledge, MS Office proficiency, strong communication and cross-functional collaboration skills.
DCS, PLC, HMI, Microsoft Office
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
1mo
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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
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Principal Engineer Molding
Lake Forest, Illinois, United States
$99k-$199k/yr OnsiteFull Time
5+ YOEBachelor’s degree or equivalent experience, 5+ years of technical experience, and 3+ years supporting plastic injection or blow molding design and processes. Plastics, tooling, resins, quality, and project management knowledge required.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Factory Acceptance Testing (FAT), Design for Manufacture and Assembly (DFMA), EoAT, Design of Experiments (DOEs), PFMEA, DFMEA
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