270 performance testing jobs at 114 companies in Gillespie, IL

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
1mo
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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
2mo
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Health and Human Performance - Graduate Assistant
St. Louis, Missouri, United States
$3k/yr OnsitePart Time
Maryville University
Maryville University: Private university offering undergraduate and graduate degree programs.
Enrolled in an eligible Maryville graduate program; able to conduct human performance testing, data analysis, assist research and teaching, lift 40lbs, and maintain lab equipment.
1mo
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Field Technician I - Construction Materials Testing
St. Louis, Missouri, United States
FieldFull Time
Intertek
IntertekLondon Stock Exchange: ITRK: Provides global testing, inspection, and certification services for products.
1+ YOE1 year construction-related field experience, valid driver’s license, ability to lift 30–50+ lbs, work outdoors and at heights, perform site testing and documentation; ACI certification and high school diploma preferred.
2d
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QA Automation Engineer with Network Testing (Python/Linux) experience
Creve Coeur, Missouri, United States
$53k-$93k/yr HybridFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
5+ YOEBachelor's degree in CS or related,5+ years QA experience including automation,performance and system testing,strong Linux administration,Python and Bash scripting,network protocol and diagnostic experience.
Python, Bash, GitHub Copilot, ChatGPT, Claude, tcpdump, Wireshark, Linux, Windows
2d
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QA Automation Engineer with Network Testing (Python/Linux) experience
Creve Coeur, Missouri, United States
$53k-$93k/yr HybridFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
5+ YOEBachelor's in CS or related,5+ years QA experience across manual, automation, performance and system testing; strong Linux administration; Python and Bash proficiency; experience with real-time/low-latency systems and network diagnostics.
Python, Bash, Linux, tcpdump, Wireshark, GitHub Copilot, ChatGPT, Claude, Windows
2d
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Registered Nurse (RN), Outpatient Admissions & Testing - Part Time
Springfield, Illinois, United States
$28-$45/hr OnsitePart Time
Memorial Health
Memorial Health: Community-based health system providing comprehensive inpatient and outpatient care.
2+ YOEActive Illinois RN license, current BLS/CPR, ability to perform IV/IM skills, position/transfer patients, withstand prolonged standing; 2 years nursing experience strongly preferred.
3w
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Pre-Test Technician
Shrewsbury, Missouri, United States
OnsiteFull Time
EyeCare Partners
EyeCare Partners: Provides comprehensive ophthalmology and optometry services through integrated clinics.
1+ YOEHigh school diploma, 1+ year related experience, EMR and Microsoft Office proficiency, ability to perform ophthalmic diagnostic tests, background check, reliable transportation, ability to work 40+ hours and occasional weekends.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Outlook, Electronic Medical Records (EMR)
3w
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Pre-Test Technician
Shrewsbury, Missouri, United States
OnsiteFull Time
EyeCare Partners
EyeCare Partners: Provider of clinically integrated ophthalmology and optometry services.
1+ YOEHigh school diploma, 1+ year related experience, EMR proficiency, Microsoft Office skills, ability to perform pre-test ophthalmic diagnostics, HIPAA compliance, background check, proof of US work authorization.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Outlook, Electronic Medical Records (EMR)
1d
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Cardiac Sonographer
Saint Louis, Missouri, United States
$37-$59/hr OnsiteFull Time
BJC Health System
BJC Health System: Non-profit health system providing comprehensive hospital and clinical care.
0+ YOEPerforms cardiac testing including stress testing, holter, transthoracic/transesophageal echo and doppler; RDCS required (or equivalent); CPR preferred; high school diploma or GED; no experience required.
1w
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Mechanical Service Operator (Locomotive) - East St. Louis, IL
East St. Louis, Illinois, United States
$26/hr OnsiteFull Time
Union Pacific
Union PacificNYSE: UNP: Provides rail freight and logistics services across North America.
Operate and service locomotives, perform inspections and tests, follow safety procedures, basic mechanical aptitude, valid driver's license, pass Physical Ability Test and medical/drug screens.
Forklift, Backhoe, Bobcat, Mobile crane, High-pressure steam cleaner, Hand radio
1w
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Laboratory Assistant II
Springfield, Illinois, United States
$17-$25/hr OnsiteFull Time
Springfield Clinic
Springfield Clinic: Physician-led medical group providing primary and specialty healthcare.
Phlebotomy experience required, high school diploma/GED, ability to collect and process specimens, perform waived lab tests, perform EKGs, and communicate with patients.
IDX, IStat
2mo
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Day Porter Maryland Heights Full Time
St. Louis or Maryland Heights
$11/hr OnsiteFull Time
ServiceMaster Contract Services
ServiceMaster Contract Services: Professional janitorial and commercial cleaning services provider.
Background check and drug test required; perform cleaning duties; English communication; able to lift 25 lbs.
2mo
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Lasik Patient Care Coordinator - St. Louis, MO Area
Creve Coeur, Missouri, United States
$17-$18/hr OnsiteFull Time
LCA Vision
LCA Vision: Provider of laser vision correction and eye surgery services.
Assist ophthalmology team, perform initial testing, manage patient care, HIPAA compliance, EMR data entry.
EMR, Electronic Medical Record
2w
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Clinical Lab Scientist
Saint Louis, Missouri, United States
OnsiteFull Time
SSM Health
SSM Health: Provide medical services through hospitals and outpatient clinics.
Performs and interprets routine and complex laboratory tests, operates and maintains instruments, performs quality control, and communicates results; associate's degree or equivalent and relevant lab credentials required.
3w
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QA Technician
Saint Peters, Missouri, United States
OnsiteFull Time
ALPLA
ALPLA: Produces custom plastic packaging and provides global recycling services.
0+ YOEHigh school diploma, 0–1 year lab/testing experience preferred; ability to perform physical testing, complete quality documentation, follow IMS/OPEX/CAQ processes, and lift up to 50+ lbs.
CAQ, IMS, OPEX, Gauge R&R
1d
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Clinical Laboratory Technician - Pathology and Immunology
St. Louis, Missouri, United States
$20-$30/hr OnsiteFull Time
Washington University in St. Louis
Washington University in St. Louis: Providing higher education and conducting advanced academic research.
Associate degree required; performs routine tissue processing and assays, uses laboratory equipment, documents testing and complies with regulatory requirements.
EPIC Beaker, Microsoft Excel
3mo
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Lot Porter
St. Louis, Missouri, United States
OnsiteFull Time
indiGO Auto Group: Operates luxury car dealerships and provides automotive maintenance services.
Organize inventory, perform vehicle touch-up and retrieval, pass drug test and background check; previous porter experience a plus.
1w
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Welding Specialist
Granite City, Illinois, United States
$24/hr OnsiteFull Time
Amsted Industries
Amsted Industries: Manufacturer of engineered industrial components for rail and energy.
Perform welding and defect removal per AWS/ASF specs; operate cutting and carbon arc equipment, cranes and forklifts; read gauges and document weld mapping; perform prep for painting and hydrostatic testing.
carbon arc, cutting torch, rosebud torch, overhead crane, forklift, airless / HVLP paint gun, power washer, steam cleaning unit, gauges
2w
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Quality Tech II
St. Louis, Missouri, United States
OnsiteFull Time
Par Health
Par Health: Manufacturing essential generic medicines and active pharmaceutical ingredients.
Perform wet chemistry and instrumentation testing in a cGMP lab; follow documentation, HSE and safety procedures; basic computer and instrumentation knowledge preferred.
HPLC, GC, LC, KF Titrator, UV, AA, pH Meter, LIMS, Microsoft Office