108 performance engineer jobs at 74 companies in O'Fallon, IL

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GPU Performance Engineer - Neural Reconstruction
California or Texas or New York or Oregon or St. Louis or Massachusetts
$224k-$431k/yr RemoteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
12+ YOE12+ years experience with strong Python and C++, PyTorch and CUDA expertise, GPU profiling and performance analysis, benchmarking, and ability to translate prototypes into production-quality code.
PyTorch, CUDA, C++, Python, NumPy, Nsight Systems, Nsight Compute, NVTX, PyTorch Profiler, CUDA events
1mo
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Staff Solar Performance Engineer - Solar (Multiple Locations)
Kansas City or Saint Louis or Phoenix or Detroit or Houston or Raleigh or Chicago
$110k-$175k/yr OnsiteFull Time
Burns & McDonnell
Burns & McDonnell: Engineering, architecture, and construction services for global infrastructure.
3+ YOEABET-accredited bachelor's in electrical engineering, 3+ years electrical engineering experience, PVsyst and SCADA experience preferred, experience with capacity/availability testing, strong communication and analytical skills.
PVsyst, SCADA, Microsoft Office Suite, AutoCAD, MicroStation
3w
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Performance Engineer Intern, Systems Software- Fall 2026
St. Louis, Missouri, United States
$20-$71/hr OnsiteFull Time, Internship
NVIDIA
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
Enrolled in a Bachelor's in CS/CE/SE or related; experience with Python and Linux; familiarity with ML lifecycle; teamwork and CS fundamentals; interest in performance benchmarking and containers.
Python, Linux, PyTorch, CUDA, cuOPT, CUTLASS, cuDNN, Kubernetes, Slurm
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SRE/Performance Engineer
St. Louis, Missouri, United States
$81k-$102k/yr OnsiteFull Time
World Wide Technology
World Wide Technology: Global technology solutions provider and systems integrator.
4+ YOE4+ years SRE/performance engineering experience; strong Kubernetes/OpenShift, observability, APM, and performance testing skills; BS degree or equivalent experience; proficiency with GitHub and programming in JavaScript, Python, C, or Java.
Kubernetes, Red Hat OpenShift, Istio, k6, LoadRunner, JMeter, Grafana, Splunk, Prometheus, GitHub, JavaScript, Python, C, Java, Dynatrace, AppDynamics, Datadog, New Relic, Oracle, SQL Server, PostgreSQL, MongoDB, Toad, SQL Developer, TELNET
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Technical Performance Manager
St. Louis or Los Angeles
RemoteFull Time
Birch Creek Energy
Birch Creek Energy: Develops and operates utility-scale solar and energy storage projects.
5+ YOEBachelor's in engineering, 5+ years in utility-scale solar technical operations/asset management, PV/SCADA/DAS knowledge, O&M contract and warranty experience, strong data analysis and reporting (Python, SQL, Excel), and communication skills.
Power Factors, AlsoEnergy, SCADA, DAS, Python, SQL, Microsoft Excel, Power BI
3d
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Staff Engineer
Saint Louis, Missouri, United States
OnsiteFull Time
Terracon
Terracon: Provides geotechnical, environmental, construction, and facilities engineering services.
1+ YOEBachelor's in Engineering, EIT/EI required, 1-3 years experience, driver's license may be required; performs field investigations, engineering analysis, cost estimates, and prepares reports.
6d
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Electrical Engineer (Engineer-In-Training)
Fairview Heights or St. Louis
$66k-$82k/yr HybridFull Time
Woolpert
Woolpert: Global architecture, engineering, and geospatial services firm.
Bachelor's in Electrical Engineering (ABET), ability to perform engineering computations, field investigations, CAD and Microsoft Office proficiency, strong communication and analytical skills.
Microsoft Office, CAD
6d
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Substation Engineer
San Diego or Kansas City or Seattle or New York or Portland or Houston or Saint Louis
$79k-$135k/yr OnsiteFull Time
WSP
WSPToronto Stock Exchange: WSP: Provides engineering, design, and environmental consultancy services globally.
3+ YOEBachelor's in electrical engineering, 3+ years substation design experience, knowledge of utility substation systems, ability to perform engineering calculations, strong communication and teamwork; EIT/PE credentials preferred.
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Structural Engineer
Kansas City, Missouri, United States
$71k-$101k/yr OnsiteFull Time
Wallace Design Collective
Wallace Design Collective: Multidisciplinary consulting firm providing engineering, surveying, and landscape architecture services.
0+ YOEBS in Civil or Architectural Engineering; 0-10 years experience; Proficiency with Revit, RISA-3D, RAM; ability to perform structural analysis and develop construction documents; site visits.
Revit, RISA-3D, RAM
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Applications Engineer I
St. Louis, Missouri, United States
OnsiteFull Time
Nidec
NidecTokyo Stock Exchange: 6594: Manufactures electric motors and electronic components for industrial applications.
0+ YOEBachelor's in Mechanical/Electrical Engineering, 0–2 years engineering experience (motor/manufacturing preferred), proficiency with Microsoft Office, ability to perform lab testing and safely use hand/power tools, limited quarterly travel.
Microsoft Office, bills of materials (BOMs), lab equipment, hand tools, power tools
3w
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Transportation Engineer
Wichita or Salina or Kansas City or St. Louis or Springfield
$110k-$150k/yr OnsiteFull Time
Wilson & Company
Wilson & Company: Provides engineering and architecture services for infrastructure development.
4+ YOEPerform roadway design using Open Roads Designer, lead project tasks, 4-7 years roadway design experience, bachelor’s in civil engineering preferred, Kansas PE or ability to obtain within 6 months.
Open Roads Designer, CADD
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Project Civil Engineer
Springfield or St Louis
$85k-$140k/yr OnsiteFull Time
Crawford, Murphy & Tilly
Crawford, Murphy & Tilly: CMT provides engineering and consulting for infrastructure and transportation.
8+ YOEBachelor's in Civil Engineering, PE in Illinois or Missouri, 8+ years engineering experience, proficiency with Microsoft Office and AutoCAD/Civil 3D, valid driver's license, ability to travel periodically and perform field work.
Microsoft Office, AutoCAD, Civil 3D
5d
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Water/Wastewater Engineer
Kansas City or St. Louis or Columbia or Forsyth or Springfield
OnsiteFull Time
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
3+ YOEBachelor's in civil/environmental engineering, PE license required, minimum 3 years water-related engineering experience, ability to perform technical studies, design plans/specs, independent decision-making, and teamwork.
1mo
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System Engineer (MBSE)
St. Louis, Missouri, United States
HybridFull Time
Agile Defense
Agile Defense: Provides IT modernization and cybersecurity for federal government agencies.
5+ YOE5+ years systems engineering experience, Secret clearance required to start, MBSE (Cameo), TFS/Azure DevOps, OFP SIL testing experience, ability to define requirements, perform trade studies, risk assessments, and V&V.
Model-Based Systems Engineering (MBSE), Cameo, Team Foundation Server, Azure DevOps, Operational Flight Program (OFP), System Integration Lab (SIL)
3w
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Site Reliability Engineer
Santa Clara or St. Louis or Bangalore or London or Paris or Melbourne or Taipei or Tokyo
OnsiteFull Time
Netskope
NetskopeNASDAQ: NTSK: Cloud-native cybersecurity and data protection platform for enterprises.
3+ YOEBachelor's in CS/Engineering or equivalent; 3+ years building/managing complex systems (including 1-2 years SRE); experience with cloud services, microservices, availability/performance optimization, debugging, and strong communication.
Python, C, C++, Go, Rust, Docker, Kubernetes, AWS, GCP, KVM, OpenNebula, OpenStack, TCP/IP
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HVAC/Field Engineer
Boston or New York or Philadelphia or Vienna or Coral Gables or Tampa or Chicago or St. Louis or Denver or Charlotte or Raleigh or Charleston or Houston or New Haven or Los Angeles or Toronto
$80k-$165k/yr OnsiteFull Time
BR+A Consulting Engineers
BR+A Consulting Engineers: Provides engineering and design services for the built environment.
5+ YOEBS in Mechanical Engineering, 5-15 years experience, strong MEP and construction knowledge, ability to perform field investigations and climb ladders, strong communication and organizational skills; Procore/Newforma experience a plus; PE license desirable.
Procore, Newforma
2w
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Entry Level Construction Project Engineer
St. Louis, Missouri, United States
$59k-$85k/yr OnsiteFull Time
Jacobs
JacobsNYSE: J: Global provider of professional engineering and technical services.
Bachelor's in engineering or construction management required; strong communication, multitasking, attention to detail; ability to travel to and between construction sites and perform frequent physical activity.
1w
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Engineer - Property Maintenance
Clayton or Saint Louis
OnsiteFull Time
Marriott International
Marriott InternationalNASDAQ: MAR: Operates and franchises a global network of hotels and resorts.
2+ YOEPerforms preventive and corrective property maintenance, inspects equipment, follows safety procedures, and lifts up to 50 lbs; technical/trade education preferred with at least 2 years related experience.
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Associate Field Engineer - Controls
Chesterfield or United States
FieldFull Time
Wunderlich-Malec
Wunderlich-Malec: Designs and integrates advanced control and automation systems.
0+ YOEBS in engineering preferred (AA acceptable), new graduate or 0-2 years field experience, exposure to instrumentation, PLC/SCADA/HMI, BMS/EPMS, ability to lift 50 lb and perform field construction tasks, strong communication and QA focus.
PLC, SCADA, HMI, BMS, EPMS
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Director, Supplier Performance & Relationship Management
Chicago or Nashville or Austin or Oklahoma City or Denver or Atlanta or Wyoming or Meridian or Indianapolis or Nebraska or Erlanger or Alexandria or Topeka or East Lansing or United States or Minneapolis or Jackson or Saint Louis or Cincinnati or Milwaukee
$132k-$155k/yr RemoteFull Time
Cushman & Wakefield
Cushman & WakefieldNYSE: CWK: Global commercial real estate and property services firm.
10+ YOE5+ MgmtBachelor's required (supply chain/business/engineering), 10+ years procurement/vendor management experience, 5+ years senior SPRM leadership, supplier governance and risk expertise, data/BI literacy, and experience with SPRM/CLM/CMMS platforms.
SPRM platforms, CLM, CMMS, BI tools