12 software engineer iii jobs at 10 companies in O'Fallon, IL
2mo
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Engineer III - Controls
Chesterfield, Missouri, United States
OnsiteFull Time
15+ YOEBachelor's in engineering or 10+ years related experience; 15+ years building automation design/implementation; Tridium Niagara AX/N4 certification; CAD software; valid driver's license.
Distech, Reliable Controls, Honeywell, Tridium Niagara AX/N4, CAD
2d
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Software Engineer III
Saint Louis, Missouri, United States
OnsiteFull Time
3+ YOERequires 3–6 years with .NET/.NET Core MVC, SQL Server, Azure, full-stack MVC development, REST/RPC APIs, DevOps, Agile, troubleshooting, communication, and a bachelor's degree or equivalent.
.NET, .NET Core MVC, SQL Server, Model-View-Controller (MVC), Azure, REST, RPC, DevOps, Agile, SQL, Microsoft .NET Framework
1mo
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Ruby Software Engineer III
Saint Louis, Missouri, United States
HybridFull Time
3+ YOE3-5 years Ruby on Rails experience, strong REST API design, PostgreSQL and Git experience, TDD with RSpec/Minitest, strong communication and collaboration skills, comfortable in Agile/Scrum.
Ruby, Ruby on Rails, PostgreSQL, Git, RSpec, Minitest, JavaScript, React, Vue, Sidekiq, Delayed Job, Docker, CI/CD, Scrum
2w
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Software Developer III - DEW/Electrical Engineering Software (C#, Big Data)
Cedar Rapids or Lake Saint Louis or Mandan or Blacksburg
HybridFull Time
8+ YOE8+ years software development experience; proficiency in C#/C++ and data-intensive/distributed systems; experience with databases, Git, and Atlassian toolchain; BS in CS preferred.
C#, C++, Java, PostgreSQL, SQL, Oracle, Git, Jira, Confluence, Bitbucket, Bamboo, Kubernetes, Docker, AWS, Spring Boot, Big Data, Microservices, Agile, Scrum
3w
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Engineer III – Core HR Technology
Tempe or St. Louis
HybridFull Time
5+ YOE5+ years software engineering with Java, Oracle Fusion HCM, AutoSys and strong SQL; Bachelor's degree or equivalent experience; problem-solving and collaboration skills.
Java, Oracle Fusion HCM, SQL, AutoSys
1d
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Engineer III
Tempe or St. Louis
HybridFull Time
5+ YOEBachelor's degree or equivalent experience; 5+ years of software engineering experience; expertise in Java or JavaScript, scalable cloud solutions, modern architecture, databases, APIs, testing, observability, and technical leadership.
Java, Spring Boot, REST APIs, React, JavaScript, Kubernetes, Kafka, MongoDB, Oracle, Microsoft Azure, AI, prompt engineering, microservices, domain-driven design, Agile
1mo
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Software Engineer - AI (Top Secret Clearance Required)
Alexandria or Chantilly or Gaithersburg or Saint Louis
OnsiteFull Time
Active Top Secret clearance (TS) required, bachelor’s in CS/Engineering, DoD 8570 IAT Level II/III (e.g., Security+), proficiency in Python, cloud (AWS) architecture, CI/CD, CloudFormation/Terraform, and database development.
Python, GitLab, Jenkins, AWS CloudFormation, Terraform, PostgreSQL, Zabbix, ACAS, Jira, Confluence, RocketChat, AWS, Windows, Linux
2mo
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Electrical Engineer III
St. Louis, Missouri, United States
OnsiteFull Time
6+ YOE6+ years related experience; US PE license required; LEED accreditation preferred; strong communication; proficient in engineering design software.
Revit, AGI32, Visual, SKM Power Tools
1w
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Roadway Civil Engineer III
St Louis, Missouri, United States
$75k-$90k/yr OnsiteFull Time
2+ YOEBachelor's in Civil Engineering required, 2+ years civil/transportation experience, EIT required, valid driver’s license, roadway design experience, proficiency with roadway design software and Microsoft Office.
MicroStation, OpenRoads Designer (ORD), AutoCAD Civil 3D, Microsoft Office Suite
2d
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Transportation Project Engineer III/IV
St. Louis or Chicago or Louisville
$40-$60/hr OnsiteFull Time
5+ YOEBachelor’s degree in Civil Engineering required; master’s preferred. Requires 5–12+ years of transportation engineering experience, PE license, design software proficiency, and mentoring ability.
MicroStation, OpenRoads, AutoCAD Civil 3D
2mo
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Project Manager I, II, III - Planning & Programming Engineer
Creve Coeur, Missouri, United States
OnsiteFull Time
Bachelor's degree in Civil Engineering or related field; FE exam and Engineering Intern for II; Registered Professional Engineer or related certification for III; GIS and transportation planning software proficiency.
ArcGIS, MicroStation, OpenRoads, Autoturn, Synchro, Microsoft Excel
3w
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Project Manager III
Granite City, Illinois, United States
$110k-$135k/yr OnsiteFull Time
5+ YOE5+ years project management in mechanical construction, bachelor’s in construction management or mechanical engineering (or equivalent experience), knowledge of HVAC/piping, strong communication, and construction software proficiency.
Microsoft Office, Viewpoint, Procore, Bluebeam, P6, Microsoft Project