228 junior developer jobs at 131 companies in Sullivan, MO
3w
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Software Engineer
Chesterfield or Greenwood Village
$85k-$140k/yr HybridFull Time
2+ YOEBachelor's in CS or related, 2+ years software development experience, experience with C#/.NET, SQL Server, web fundamentals, Git, testing, and strong communication and problem-solving skills.
C#, .NET, SQL Server, HTML, CSS, JavaScript, Git, TypeScript, Angular, React, REST APIs, Azure DevOps, Azure, AWS, Application Insights, DataDog
1mo
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Software Engineer I
Fenton, Missouri, United States
HybridFull Time
1+ YOE1-2 years relevant experience or equivalent practical experience; knowledge of web frameworks, OOP, REST services, databases, basic cloud (AWS/GCP/OCI), secure coding, and AI-assisted development tools.
GitHub Copilot, Claude, AWS, GCP, OCI, REST
3mo
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Software Engineer II
O'Fallon, Missouri, United States
OnsiteFull Time
0+ YOEBachelor's degree in computing or related field; foundational software engineering knowledge; Java proficiency; Agile practices; strong problem solving and communication.
Java, Git, Agile, Testing
1w
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F-15 Mission Systems Software Engineer (Associate, Experienced, & Senior)
Berkeley, Missouri, United States
$99k-$217k/yr OnsiteFull Time
Bachelor's in engineering or related field, ability to obtain U.S. Secret clearance/U.S. Person status, 2+ years with C/C++/C#/Python/Java/Ada and object-oriented development, experience designing architectures and embedded real-time software, Agile and DevOps exposure.
C, C++, C#, Python, Java, Ada, GitLab, Git Bash, Gradle, Jira, Jenkins, Artifactory, RTOS, Agile, SAFe
2d
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Project Engineer
Chesterfield, Missouri, United States
OnsiteFull Time
Bachelor's degree in engineering with graduation expected in December 2026 or May 2027; interest in transmission development, strong communication, analytical problem-solving, attention to detail, and independent work skills.
PLS-CADD
1w
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Security Engineer- Application Security & Cloud
Chesterfield or Mt Sterling
$87k-$131k/yr OnsiteFull Time
2+ YOE2+ years experience in software/cloud/DevOps or security; bachelor's or equivalent; experience with .NET/Python/Azure; knowledge of secure development, API security, auth, and secrets management.
.NET, Python, Azure, Azure DevOps, GitHub Actions, Docker, Kubernetes, Terraform, Bicep, OWASP Top 10, NIST AI Risk Management Framework
1mo
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Automation Engineer
Saint Peters, Missouri, United States
OnsiteFull Time
2+ YOE2+ years PLC/SCADA experience, controls/programming experience, robotics and conveyor systems familiarity, ability to lift 50+ lbs, flexible schedule availability, bachelor's degree preferred.
RSLogix 5000, Allen Bradley Controllogix, CompactLogix, SCADA, Ethernet, ControlNet, DeviceNet, Profibus, AS-I, Microsoft Word, Microsoft Excel, Microsoft Outlook
4d
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Manufacturing Engineer
Wentzville, Missouri, United States
OnsiteFull Time
2+ YOEBachelor's degree in engineering or equivalent experience, 2+ years in manufacturing, engineering drawing skills, contractor management experience, analytical problem-solving, communication, project management, and Microsoft Office proficiency.
Global Manufacturing System (GMS), Microsoft Office, Microsoft Excel, Microsoft Outlook, Microsoft Word, Microsoft PowerPoint, Microsoft Project, AutoCAD, Siemens NX, Maximo, Computerized Maintenance Management Systems (CMMS), Throughput Improvement Process (TIP), Practical Problem Solving (PPS), 3D printing
1mo
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Process Engineer
Festus, Missouri, United States
OnsiteFull Time
2+ YOEBSc in engineering required, 2+ years operations experience (cement preferred), strong safety/environment knowledge, supervisory ability, computer skills, and physical ability to work in plant conditions.
3w
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Mine Engineer
Boss, Missouri, United States
OnsiteFull Time
1+ YOEBachelor's in mining engineering, valid driver's license, ~1 year mining experience preferred; proficient with AutoCAD and Microsoft Office; ability to manage small projects and ensure EHS compliance.
Microsoft Excel, Microsoft Word, Adaptive, AutoCAD, Pi, MS SQP Server, Microsoft Access, AcQuire, UKG, AS400, Vulcaan, Surfer, Leapfrog, ArcGIS, PeopleSoft
2mo
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Engineer I-AV Field
St. Charles, Missouri, United States
OnsiteFull Time
2+ YOEEntry level AV field engineer with 2 years distributed AV experience preferred; HS diploma required; strong customer service and troubleshooting skills.
AV equipment, Networking, Troubleshooting, Lighting systems, Digital signage, Video displays, HDMI/DVI/VGA, Crestron or similar control systems
2mo
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Senior Data Solution Architect/Engineer
Gray Summit, Missouri, United States
$78k-$103k/yr HybridFull Time
2+ YOEMaster's in Computer Science/Engineering/Data Science and 2+ years as a data scientist/engineer; experience with Python, R, SQL/Scala, Power platform, Azure, VB6, SSAS/SSIS/SSRS, and data pipeline/ML model development.
ETL tools, SQL Databases, Data Warehousing, Data Modeling, Python, R, SQL, Scala, Power BI, Power Automate, Power Apps, Power Pivot, Microsoft Fabric, VB6, Azure Functions, Data Lake, APIs, SSAS, SSIS, SSRS, T-SQL
1mo
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Geotechnical Engineer
Chesterfield, Missouri, United States
OnsiteFull Time
Bachelor's in Geological/Civil Engineering required; EIT/EI preferred. Experience in geotechnical fieldwork, lab testing, engineering analysis, report preparation, project management, and strong communication and problem-solving skills.
1w
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Product Security Engineer (Air Dominance-Phantom Works)
Berkeley, Missouri, United States
$162k-$220k/yr OnsiteFull Time
1+ YOEBachelor's degree,1+ years in avionics or embedded systems development,ability to obtain U.S. Secret clearance,knowledge of product cybersecurity,JSIG/DoD/ICD 503/RMF/NISPOM controls,experience with suppliers and system architectures.
MBSE
3w
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VDC Engineer | Vision
O'Fallon, Missouri, United States
OnsiteFull Time
1+ YOE1+ years BIM/VDC experience, proficiency in Revit, Navisworks, Procore and ACC, working knowledge of MEP/structure/architecture, ability to lead BIM coordination and enforce BIM standards.
Revit, Navisworks, Procore, Autodesk Construction Cloud (ACC)
3w
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Quality Engineer Intern
Rolla, Missouri, United States
OnsitePart Time
Pursuing a bachelor's in a STEM field; support quality and manufacturing engineering through data analysis, SPC, documentation, and process improvement; part-time 15-20 hrs/week.
1w
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Associate Field Engineer - Controls
Chesterfield, Missouri, United States
FieldFull Time
0+ YOENew graduate or 0-2 years field experience. BS in engineering preferred. Familiarity with field instrumentation, PLC/SCADA/HMI, panel wiring, commissioning, ability to work onsite and follow safety/PPE requirements.
PLC, SCADA, HMI
1w
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Automation Engineer (Field Support)
Lexington or Chesterfield or Charlotte
HybridFull Time
Gray: Provides integrated design-build and automation services for industrial facilities.
2+ YOE2+ years commissioning/startup or controls experience; perform installation verification, pre-commissioning, troubleshooting, and startup support; read P&IDs and electrical drawings; strong communication and leadership.
PLC, DCS
1w
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Early Career Mining Engineer
Creve Coeur, Missouri, United States
OnsiteFull Time
0+ YOEBachelor's in mining engineering,0-1 years experience,Microsoft Office proficiency,ability to travel internationally,experience with mine planning software preferred; must be eligible to work in the US.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Vulcan, Deswik, Datamine, MineScape, Whittle, XPAC, Spry
2w
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Controls Engineer 3rd Shift
Wentzville, Missouri, United States
OnsiteFull Time
2+ YOEAssociate/Bachelor in engineering or related (or equivalent experience), 2+ years controls/maintenance experience, PLC/HMI/robot experience, AutoCAD and Microsoft Office skills, strong troubleshooting and continuous improvement ability.
Microsoft Word, Microsoft Excel, Microsoft Project, Microsoft PowerPoint, AutoCAD, Studio 5000 Logix Designer, FactoryTalk View Studio, Allen Bradley ControlLogix 5000, Cognex, Keyence, PanelView Plus