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47 systems test engineer jobs at 19 companies in Saint Charles, MO

4w
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Test Engineer
High Ridge, Missouri, United States
OnsiteFull Time
The H-J Family of Companies
The H-J Family of Companies: Manufactures and supplies electrical components for global power distribution systems.
5+ YOEBachelor's in engineering and 5+ years testing/calibration experience with high-voltage electrical measurement systems, ISO 17025 compliance, test method development, and technical reporting.
Solidworks
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4w
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Test Engineer
High Ridge, Missouri, United States
OnsiteFull Time
H-J Family of Companies
H-J Family of Companies: A global designer and manufacturer of products for the transformer and switchgear industries focused on innovation, quality, and employee development.
5+ YOEBachelor's in Mechanical or Electrical Engineering and 5+ years testing/calibration experience with high-voltage electrical measurement systems; ISO 17025 experience; ability to develop procedures and ensure compliance.
Solidworks
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1mo
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Test Engineer
St. Louis, Missouri, United States
OnsiteFull Time
Freedom Technology Solutions Group
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
4+ YOEActive security clearance required; 4+ years test engineering experience; knowledge of DevSecOps, Agile/SAFe, AI model use, geospatial systems, vendor coordination, and delivering complex technology assignments.
Linux, Java, JavaScript, Python, Docker, OpenShift, Kubernetes, AWS Services, GitLab, Apache Spark, Glue, Parquet, JSON, XML, Argo Workflows, Boundless Spatial, Remote View, PostGRES/PostGIS, Oracle Spatial, ArcGIS Desktop, ArcGIS Server, Image Server, File Geodatabases, KML, KMZ, NITF, TIFF, JPEG, GeoPDF, PHP, C, C++, C#, Perl
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2mo
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Systems Engineer
King of Prussia or Springfield or St Louis
$112k-$179k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
6+ YOEMust hold Top Secret clearance and be willing to upgrade to TS/SCI with poly; BS in engineering or related science; 8 yrs systems engineering experience with BS (or 6 yrs with MS); experience with sensor imaging, test design, requirements, and strong written/oral communication.
National System for Geospatial-Intelligence (NSG), RADAR, LIDAR, OPIR, EO/IR, SAR, multispectral, hyperspectral
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2mo
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Systems Integration Testing Engineer
St Louis, Missouri, United States
$112k-$179k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
6+ YOEMust hold Top Secret clearance and be willing to upgrade to TS/SCI with polygraph. BS in systems/electrical/physics/software engineering (or related) with 8 years' systems engineering experience (6 years with Master's). Experience in sensor imaging systems, test design, data verification, and strong written/oral communication required.
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1mo
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Test & Evaluation Engineer (Experienced or Senior)
Berkeley, Missouri, United States
$104k-$171k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
10+ YOEBachelor's in engineering (or equivalent), 10+ years structural/mechanical/flight test experience, 5+ years leading test design, 5+ years with 3D design tools, hydraulic systems experience, active U.S. Secret security clearance required.
Siemens NX, SolidWorks, CATIA
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1mo
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Test & Evaluation Engineer (Experienced or Senior)
Berkeley, Missouri, United States
$104k-$171k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
10+ YOEBachelor's degree in engineering or related field, 10+ years structural/mechanical/flight testing, 5+ years 3D design (Siemens NX/SolidWorks/CATIA), 5+ years leading test design, 5+ years hydraulic/control systems, active U.S. Secret security clearance and U.S. Person required.
Siemens NX, SolidWorks, CATIA, accelerometers, strain gages, thermocouples, load cells, LVDT/Temposonic devices
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1mo
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Systems/Controls Engineer II
Kirkwood, Missouri, United States
OnsiteFull Time
Bausch + Lomb
Bausch + LombNYSE: BLCO: Manufacturing and selling contact lenses and eye health products.
3+ YOEBachelor's degree in engineering or computer science (or equivalent experience), 3+ years engineering experience with software emphasis, software V&V and regression testing experience, ability to author and review SRS/SDS/SAD/test protocols, strong communication and organizational skills.
Microsoft Office, Aras PLM, D2, C/C++, C#, Python
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2w
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Senior Systems Integration Engineer
Westborough or Chesterfield
$100k-$150k/yr RemoteFull Time
LG Energy Solution Michigan
LG Energy Solution Michigan: Manufactures lithium-ion batteries for electric vehicles and energy storage.
5+ YOEBachelor's in CS/EE or equivalent, 5+ years integration and controls testing, Python/Bash/Linux experience, networking and SCADA/DNP3/Modbus familiarity, PLC and test automation experience.
AEROS, Python, Bash, Linux, SCADA, DNP3, Modbus TCP/IP, PLC, Subversion, GitHub, JIRA
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2w
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Systems Engineer II (Remote) - WashU IT, Shared Infrastructure Data Center
St. Louis or Clayton
$66k-$113k/yr RemoteFull Time
Washington University in St. Louis
Washington University in St. Louis: Providing higher education and conducting advanced academic research.
4+ YOEAssociate degree or equivalent, 4 years IT experience, expertise with DNS/DHCP/IPAM, capacity planning, systems analysis, testing, and technical leadership.
Infoblox DNS, IP Address Management (IPAM), DHCP, DNS, IPv4, IPv6
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1w
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Lead, Senior or Experienced Electronic Systems Design, Integration, Analysis, and Test Engineers **Sign on Bonus Potential**
Berkeley or Saint Charles or Hazelwood or Mascoutah
$112k-$185k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures commercial airplanes, defense systems, and space technology.
5+ YOEBachelor's in engineering or related field, ability to obtain U.S. security clearance (Secret/Top-Secret) and U.S. citizenship, 5+ years experience for senior roles, aerospace experience preferred, ability to relocate to St. Louis region.
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3mo
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Software Development Engineer in Test (SDET) II
O’Fallon, Missouri, United States
$92k-$147k/yr HybridFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
SDET with experience building functional, integration, and UAT test strategies for high-throughput systems. Linux, shell scripting, and programming in C/C++ or Java. Git experience. Bachelor’s in CS/SE/IT/Math. Strong communication.
Linux, Shell scripting, C, C++, Java, Git
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2mo
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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)
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1mo
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Senior SIT Engineer (Firmware & Hardware) (St. Louis, MO, US, 63146)
St. Louis, Missouri, United States
OnsiteFull Time
Hubbell
HubbellNYSE: HUBB: Designs and manufactures electrical products and utility infrastructure solutions.
5+ YOEBachelor's in CS/Engineering, 5+ years system integration testing experience with firmware and hardware, strong embedded systems and SDLC knowledge, Agile/DevOps experience, and strong analytical and communication skills.
JMeter, SOAPUI, Kafka, Grafana, RabbitMQ, C#, Python, JavaScript, XML, Oracle 19c, Oracle 12c, Oracle 11g, MS SQL Server, PL/SQL, T-SQL, Microsoft Azure, Windows Server
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1mo
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Distribution Engineer - Greater St. Louis Area
St. Louis or Wentzville or Edwardsville
$71k-$134k/yr RemoteFull Time
Orbital Engineering
Orbital Engineering: Provides engineering, inspection, and construction services for industrial infrastructure.
ABET BS in Engineering (preferably electrical), knowledge of electric utility distribution systems, EIT/FE or PE preferred, valid driver’s license, ability to travel and pass drug/fit-for-duty tests, proficiency with Microsoft Office, GIS and distribution design software.
Microsoft Office, GIS, Spida Calc, O-Calc, Pole Foreman, Katapult, AutoCAD, SPANS, NJUNS, IkeGPS
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1mo
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Solutions Engineer – Investment Management Technology
Arizona or Tempe or Missouri or St. Louis or United States
RemoteFull Time
Edward Jones
Edward Jones: Offers investment management and financial planning through local branches.
10+ YOE10+ years software engineering with full-stack expertise; system design for scalable, secure cloud solutions (microservices); experience with relational and non-relational databases, operating production systems (monitoring/observability), and automated testing.
Java, Kubernetes, MongoDB, SQL Server, Oracle, Kafka, Azure Cloud, React, Node, Python, AI, DB2, COBOL, MQ, Dynatrace, Grafana
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3w
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Software Engineer I
St. Louis, Missouri, United States
OnsiteFull Time
Nidec
NidecTokyo Stock Exchange: 6594: Manufactures electric motors and electronic components for industrial applications.
0+ YOEBS in EE/Software Engineering/Computer Science,0–3 years experience in desktop or embedded development,proficiency with C/C++,C#,Visual Basic,SQL,Java,IDE experience,embedded systems and hardware testing.
C, C++, C#, Visual Basic, SQL, Java, Microsoft Visual Studio
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1w
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Engineer - Unlicensed - 2026
Alton or United States
FieldFull Time
American Cruise Lines
American Cruise Lines: Operates small ship and river cruises within the United States.
Experience with diesel machinery, hydraulics, and electrical shipboard systems; TWIC card; ability to live onboard, work long hours, lift up to 50 lbs, pass pre-employment drug test, and perform emergency duties.
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3mo
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Audio Visual Engineer
Scott Air Force Base, Illinois, United States
OnsiteFull Time
By Light
By Light: Provides IT and technology services to federal government agencies.
7+ YOE7+ years installing, commissioning, and maintaining audiovisual and VTC systems, ability to read schematics, use electronic test equipment, perform physical installation tasks, and meet DoD security requirements.
Crestron, Microsoft Office
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1d
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Lead Software Engineer - St. Louis Office
St. Louis, Missouri, United States
OnsiteFull Time
London Stock Exchange Group
London Stock Exchange GroupLondon Stock Exchange: LSEG: Provides financial market infrastructure and global data analytics services.
6+ YOE6+ years with Java, Python, C++, or C#; software architecture and system design expertise; CI/CD, testing, cloud platforms, mentoring, and a bachelor's degree or relevant experience.
Java, Python, C++, C#, CI/CD, AWS, Microsoft Azure
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