359 software engineer software engineering software developer jobs at 119 companies in O'Fallon, IL

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
1mo
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Senior Software Engineer
O'Fallon, Missouri, United States
$115k-$184k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment network facilitating electronic transactions and financial services.
3+ YOEBachelor's degree or equivalent, 3+ years software engineering experience (financial services preferred); strong software engineering knowledge, secure solution delivery, SDLC experience, and strong communication and mentoring skills.
3w
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Experienced Software Engineer
Hazelwood, Missouri, United States
$127k-$171k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
5+ YOEBachelor's degree, 5+ years software engineering experience, proficiency in C/C++/C#, Agile experience, ability to obtain U.S. Secret security clearance, simulation/software architecture experience preferred.
C, C++, C#, Python, Lua, OpenGL, Jira, Jenkins, GitLab, CMake, Visual Studio
3mo
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Software Engineer
Chicago or St. Louis or Philadelphia
$75k-$95k/yr HybridFull Time
ProSight Financial Association
ProSight Financial Association: Professional association for financial services research and training.
3+ YOE3+ years software engineering experience with .NET/C#, SQL, Microsoft Azure (Functions, App Services, DevOps), front-end skills (HTML, CSS, JavaScript, React.JS/Angular JS), containerization (Docker, Kubernetes), and CI/CD practices.
.NET, C#, SQL, Microsoft Azure, Azure Functions, Azure App Services, Azure DevOps, HTML, CSS, JavaScript, React.JS, Angular JS, Docker, Kubernetes, Microsoft SQL Server, MySQL, PostgreSQL, Terraform, ARM templates, PHP, CI/CD, RESTful APIs
1mo
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Sr. Software Engineer
Hazelwood, Missouri, United States
$82k-$115k/yr HybridFull Time
bioMérieux
bioMérieuxEuronext Paris: BIM: Develops and manufactures in vitro diagnostic solutions for laboratories.
7+ YOESenior-level software engineer with 7+ years full stack experience, AWS, IaC, microservices, and data governance.
AWS, Docker, Kubernetes, Terraform, CloudFormation, AWS CDK, Python, SQL, PostgreSQL, Oracle
1mo
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Software Engineer II
O'Fallon, Missouri, United States
$92k-$147k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
Experience in software development and SDLC, strong Java proficiency, Git and CI/CD experience, familiarity with Agile, degree in CS/Engineering/IT or equivalent experience; experience with decisioning platforms preferred.
Java, Git, CI/CD, Jira, Confluence, Rally, Decision Management Program (DMP)
1w
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Software Engineer
Chesterfield or Greenwood Village
$85k-$140k/yr HybridFull Time
MiTek
MiTekNYSE: BRK-B: Provides software and automation for the building industry.
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
Denver or Springfield or Sterling or St. Louis
$82k-$172k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
5+ YOEBachelor's in CS or related, 5+ years software development experience, Java and/or Python proficiency, experience with web frameworks and databases, TS/SCI clearance with polygraph required, Agile and secure coding experience.
Java, Python, ArcGIS, GeoServer, OpenLayers, Leaflet, Cesium, Docker, Kubernetes, CI/CD
2w
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Software Engineer
Maryland Heights, Missouri, United States
$105k-$128k/yr HybridFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
5+ YOEBachelor's degree or equivalent; 5+ years software development with JavaScript/TypeScript/React/C#/C++; experience with REST APIs, Agile/SAFe, Jira/Azure Devops, Git; ability to obtain U.S. Secret Clearance.
JavaScript, TypeScript, React, C#, C++, REST, SAFe, Jira, Jira Align, Azure Devops, Git, .NET MAUI
1mo
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Software Engineer Co-Op
St. Louis, Missouri, United States
OnsitePart Time, Internship
Nidec
NidecTokyo Stock Exchange: 6594: Manufactures electric motors and electronic components for industrial applications.
Currently enrolled in a bachelor's program in software engineering, computer science, or similar; available 25–29 hours/week while attending school; support testing, development, assembly, and lab activities for software controls.
5d
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Senior Software Engineer
St. Louis, Missouri, United States
OnsiteFull Time
Merck
MerckXETRA: MRK: A science and technology providing healthcare, life science, and electronics solutions.
5+ YOEBachelor's degree,5+ years software engineering experience,proficiency in Java,REST,unit testing,cloud and distributed systems,experience with microservices,CI/CD,Kubernetes,ElasticSearch,Spring and SQL.
Java, Google Cloud Platform, Azure, Amazon Web Services, JavaScript, HTML, CSS, SQL, GitHub, ElasticSearch, Kubernetes, Spring, Spring Boot
2mo
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C++ Software Engineer
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.
2+ YOE2+ years C++ experience; OO design; full software life cycle; team collaboration; test-driven development.
C++, Linux, Python, Unix shell, JavaScript, Node.js
1w
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Sr. Software Engineer
O'Fallon, Missouri, United States
$100k-$110k/yr OnsiteFull Time
Tech Mahindra
Tech MahindraNational Stock Exchange of India: TECHM: Global provider of information technology and business process services.
5+ YOE5+ years software development experience with strong Java 8, Spring Boot, microservices, testing frameworks, and cloud platform experience (PCF/Azure). Bachelor’s degree required.
Java 8, Spring Boot, Microservices, Kafka, Angular JS, JUnit, Mockito, PCF, Azure, Docker, Kubernetes, SQL, NoSQL
3mo
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Software Engineer III
St. Louis, Missouri, United States
OnsiteFull Time
Agile Defense
Agile Defense: Provides IT modernization and cybersecurity for federal government agencies.
5+ YOEActive U.S. Top Secret/SCI clearance; 5+ years software development in VB.NET/C#.NET; SQL experience; unit testing; CompTIA Security+ or Computer Science degree.
VB.NET, C#.NET, SQL, xUnit, nUnit, MSTest, Windows, Azure DevOps, Jira, CI/CD, RESTful APIs, C++
2mo
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Principal Software Engineer
Atlanta or Boston or Morristown or Plano or St. Louis or St. Petersburg or Hyderabad
HybridFull Time
Zelis
Zelis: Providing healthcare payment and claims cost management solutions.
8+ YOE8+ years backend software engineering; degree or equivalent; cloud, IaC, CI/CD; APIs; strong communication; leadership.
TypeScript, Node.js, PostgreSQL, Angular, AWS, Terraform, Elasticsearch, CI/CD, SASS
1mo
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Software Engineer I, AI
Grand Rapids or Los Angeles or Washington or Troy or New York or Houston or Chicago or Owings Mills or Columbia or Richmond or Memphis or Raleigh or Boston or San Jose or San Francisco or Austin or Kalamazoo or Spokane or Denver or Fort Worth or Atlanta or Orlando or Dallas or Wilmington or Phoenix or San Antonio or Milwaukee or Madison or McLean or Huntsville or Woodbridge or Stamford or Miami or Philadelphia or Charlotte or Greenville or West Palm Beach or Costa Mesa or St. Louis or Fort Lauderdale or Seattle or Rosemont or Pittsburgh or Tulsa or Cincinnati or Cleveland or Columbus or Akron or Cherry Hill or Minneapolis or Anchorage or Salt Lake City or Norfolk or Jacksonville or Boulder or Nashville or Oak Brook or Las Vegas or Indianapolis or San Diego or Baton Rouge or Jackson or Tallahassee or Tampa or Omaha
$85k-$100k/yr OnsiteFull Time
BDO USA
BDO USA: Provides accounting, tax, and business advisory services to organizations.
1+ YOE1+ years software engineering experience; experience with AI/ML and integrating large language models preferred. Familiarity with databases/SQL, debugging and monitoring, Microsoft development stack (.Net, C#, Azure) preferred; HS required, bachelor\u0002s preferred.
Microsoft Visual Studio, VS Code, Microsoft Azure DevOps, GitHub, Microsoft SQL Server, Azure SQL, Microsoft Entity Framework, .Net, C#, Azure, SQL
3d
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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
NISC
NISC: Provides enterprise software solutions for utility and broadband cooperatives.
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
3mo
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Senior Software Engineer
St. Louis, Missouri, United States
OnsiteFull Time
Equifax
EquifaxNew York Stock Exchange: EFX: Provides consumer credit reporting and data analytics services globally.
5+ YOE5+ years software engineering experience in Java/SpringBoot, TypeScript/JavaScript, cloud tech (GCP/AWS/Azure), microservices, CI/CD, and agile practices.
Java, SpringBoot, TypeScript, JavaScript, HTML, CSS, GCP, AWS, Azure, Terraform, Helm, Jenkins, Kubernetes, Docker, Angular, Git, Maven, Gradle, JUnit, Selenium, Airflow, BigQuery, Dataflow, PubSub, Bigtable, CI/CD, Git
1mo
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Sr. Engineer, Software - Archimedes
St. Louis or Brentwood or Alaska or Arizona or Arkansas or California or Connecticut or Delaware or Hawaii or Idaho or Louisiana or Maine or Massachusetts or Michigan or Mississippi or Montana or Nebraska or Nevada or New Mexico or New York or North Carolina or North Dakota or Oregon or Rhode Island or South Carolina or South Dakota or Texas or Utah or Vermont or Washington or West Virginia or Wyoming or United States
HybridFull Time
Navitus Health Solutions
Navitus Health Solutions: Transparent pharmacy benefit management and specialty pharmacy provider.
8+ YOEBachelor's in CS or related; 8+ years software engineering experience (5+ years with C#, .NET, React); experience with cloud-native, APIs, microservices, CI/CD, Git, Azure; technical leadership and mentoring experience.
C#, .NET, ASP.NET Core, React, TypeScript, JavaScript, REST APIs, GraphQL, Webhooks, API Management, Microsoft Azure App Services, Microsoft Azure Functions, Microsoft Azure Container Apps, Microsoft Azure Kubernetes Service (AKS), Microsoft Azure Storage, Microsoft Azure Databricks, Microsoft Azure Data Lake Storage Gen2, Microsoft Azure Synapse Analytics, Microsoft SQL Server, PostgreSQL, Microsoft Azure DevOps, GitHub Actions, CI/CD, Infrastructure as Code, Retrieval-Augmented Generation (RAG), Microsoft Azure OpenAI, Microsoft Azure AI Services, Intelligent Automation, Agent-Based Solutions, OWASP, OAuth2, OpenID Connect, DevSecOps, Git, Azure Repos, GitHub, TFS, Jira, Unix/Linux shell scripting
1mo
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Software Engineer (Hazelwood, MO, US, 63042)
Hazelwood, Missouri, United States
OnsiteFull Time
FlightSafety International
FlightSafety International: Professional aviation training and flight simulator manufacturing services.
2+ YOE2+ years of software engineering experience; bachelor’s in a technical field; experience in Agile/Waterfall; SDLC knowledge.
Azure DevOps, Git, Visual Studio, Python, Bash, PowerShell, Perl
2w
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Manager Software Engineering
Bridgeton, Missouri, United States
$131k-$177k/yr HybridFull Time
Leonardo DRS
Leonardo DRSNASDAQ: DRS: Manufactures advanced electronic systems for defense and military applications.
5+ YOEBachelor's in software engineering or related, 5+ years software engineering experience, demonstrated people and technical leadership, experience with embedded development and C/C++/C#/Java, Linux/Unix, strong communication and analytical skills.
C, C++, C#, Java, Linux, Unix