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98 entry level software developer jobs at 37 companies in O'Fallon, MO

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
Help us #BeatIndeed & #BeatLinkedIn
2w
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Entry-Level Software Engineer
Maryland Heights or Hazelwood
$65k-$73k/yr HybridFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
Bachelor's degree required, experience with Git and object-oriented programming; familiarity with C#, JavaScript, and SQL preferred. Must be a U.S. Person able to obtain a U.S. Secret security clearance.
C#, JavaScript, SQL, Git
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2w
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Entry-Level Software Engineer
Maryland Heights or Hazelwood
$65k-$73k/yr HybridFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
Bachelor's degree; experience with Git, object-oriented programming; familiarity with C#, Javascript, and SQL; eligibility for U.S. security clearance and U.S. Person status; Agile/SDLC experience preferred.
C#, Javascript, SQL, Git
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3mo
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Test Engineer (Entry-Level)
Scott AFB or United States
OnsiteFull Time
DecisionPoint
DecisionPoint: Provides IT and cybersecurity services for federal government agencies.
2+ YOEEntry-level Test Engineer; 0–2+ years experience; active Secret clearance; IAT Level II (Security+ CE); basic SDLC; strong communication.
Jira, Java, Angular, APIs, SQL
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3mo
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AI Developer (Entry Level)
Charlotte or Dallas or Jersey City or Pennington or St Louis or Georgia or Missouri or New Jersey or North Carolina
$68k-$74k/yr OnsiteFull Time
Wipro
WiproNYSE: WIT: Global technology services and consulting for digital transformation.
Recent STEM master's graduate preferred (3.0+ GPA); strong communication, analytical and problem-solving skills; ability to design, code, test, and document software; familiarity with programming, cloud applications, and GenAI concepts is a plus.
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2d
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Entry-Level Connector Developer
Saint Louis, Missouri, United States
OnsitePart Time
Nomad eCommerce
Nomad eCommerce: Provides integrated B2B e-commerce platforms for manufacturers and distributors.
Bachelor's degree or equivalent, proficiency in C#/.NET and object-oriented languages, SQL and REST APIs, experience with JSON/XML, strong problem-solving and communication skills.
C#, .NET, REST, SQL, JSON, XML, CSV, Postman, Git, GitHub, Azure DevOps, CI/CD, HTML, CSS, JavaScript, Java, Python
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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.
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1d
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Software Developer 2 (Associate)
O'Fallon, Illinois, United States
HybridFull Time
UNCOMN
UNCOMN: A technology delivering secure software solutions for public and private sector clients.
2+ YOE2+ years software development experience, backend/REST API experience, Java and Azure familiarity, Agile/Jira experience, eligible for U.S. Secret clearance, strong communication and problem-solving skills.
Java, Microsoft Azure, RESTful APIs, Jira
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1mo
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Software Engineer - Intermediate
St. Louis, Missouri, United States
HybridFull Time
Equifax
EquifaxNew York Stock Exchange: EFX: Provides consumer credit reporting and data analytics services globally.
2+ YOEBachelor's degree or equivalent, 2+ years software development experience with Java, Python, and JavaScript; experience with cloud (GCP/AWS/Azure), build tools (Maven/Gradle), frontend (HTML/CSS), CI/CD, and AI-assisted coding tools (e.g., GitHub Copilot).
GitHub Copilot, Java, Python, JavaScript, Maven, Gradle, HTML, CSS, JUnit, Git, GitHub, Jenkins, Atlassian, Java 17, Spring Boot, GCP, AWS, Azure, CI/CD, Microservices, Data Fabric, CSA Toolset
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1mo
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Software Engineer
Earth City, Missouri, United States
HybridFull Time
MiTek
MiTekNYSE: BRK-B: Provides software and automation for the building industry.
2+ YOEBachelor's in CS or related, 2+ years professional .NET/C# experience, desktop/web app development, Angular and SQL Server proficiency, Agile experience, strong communication skills.
.NET, C#, Angular, Microsoft SQL Server, GitHub Copilot, Git, SonarQube, OPC UA, Mass Transit, RabbitMQ, Microsoft Azure
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3w
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Mid Software Developer
O'Fallon, Illinois, United States
OnsiteFull Time
Chenega Corporation
Chenega Corporation: Provides professional government, defense, and facility support services.
2+ YOEMinimum 2 years relevant experience (or HS/GED +6 yrs); experience with AWS (S3, EC2, Lambda), Python, shell scripting, TypeScript, Node.js/Express, ASP.NET Core, C#, Postgres, Kubernetes, Docker, .NET Core, Linux, React, Java, and SQL; AWS Developer certification and TS/SCI clearance preferred; must pass background and drug screening.
Amazon S3, EC2, Lambda, AWS SDK API tools, RDS, Python, Python Flask, Bash, TypeScript, Node.js/Express, ASP.NET Core Web API, Swagger (OpenAPI), C#, Postgres, Kubernetes, Docker, .NET Core, Linux, React, JavaScript, Java, SQL, Gitlab/DevOps, ESRI, Microsoft Word, Microsoft Excel, Microsoft Office
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1w
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Software Engineer I
Fenton, Missouri, United States
HybridFull Time
Maritz
Maritz: Provides business incentive, event, and loyalty management solutions.
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
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2w
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Software Developer - Meter Data Management Software (Full Stack, Back End)
Cedar Rapids or Lake Saint Louis or Mandan or United States
HybridFull Time
NISC
NISC: Provides enterprise software solutions for utility and broadband cooperatives.
1+ YOE1+ years software development; full-stack with back-end focus; experience with Databricks, Spark, AWS, Java/Scala/TypeScript, SQL/NoSQL, Docker/Kubernetes, CI/CD tools (JIRA, Confluence, Bitbucket, Bamboo); bachelor's preferred.
Databricks, Delta Lake, Spark, Kafka, Java, Springboot, Typescript, Angular, SQL, Scala, Scala Spark, Pyspark, S3, Lambda, EC2, EMR, SQS, SNS, CloudWatch, Oracle, Postgres, Cassandra, DynamoDB, Docker, Kubernetes, JIRA, Confluence, Bitbucket, Bamboo, CI/CD
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2mo
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Software Engineer II
O'Fallon, Missouri, United States
OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
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
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23h
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Software Engineer
St. Louis, Missouri, United States
$30-$47/hr HybridFull Time
Merck
MerckXETRA: MRK: A science and technology providing healthcare, life science, and electronics solutions.
1+ YOEBachelor's in CS or related,1+ year AI/ML model training and deployment,experience with autonomous agent frameworks (LangChain,CrewAI,AutoGen),Python/R and ML frameworks,cloud and data tool familiarity.
TensorFlow, PyTorch, Scikit-learn, Pandas, NumPy, SQL, AWS, Google Cloud, Azure, Apache Spark, Airflow, Docker, LangChain, CrewAI, AutoGen, Python, R
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1w
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Software Engineer IV – ERP Finance (Oracle/PLSQL)
Saint Louis, Missouri, United States
HybridFull Time
Charter Communications
Charter CommunicationsNASDAQ: CHTR: Provides broadband connectivity, cable, and mobile communication services.
2+ YOE2+ years Oracle and PL/SQL experience; ERP/financial systems development, software lifecycle knowledge, cloud/native and API familiarity, strong communication and problem-solving skills.
Oracle, PL/SQL, Java, Spring, API Gateway, AWS
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3w
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Software Development Engineer I
St. Louis, Missouri, United States
$76k-$129k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
1+ YOE1+ years JavaScript/TypeScript experience, bachelor's in CS/Math/GIS/STEM, strong OOP and software methodology knowledge, ability to maintain US security clearance, Python experience for geoprocessing preferred.
JavaScript, TypeScript, Python, HTML, CSS, Swift, Kotlin, ReactJS, Vue, Svelte, GIS, REST Web services, SQL, SQL Server, PostgreSQL, Oracle
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2mo
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Entry Level Structural Engineer
Creve Coeur, Missouri, United States
$80k-$95k/yr HybridFull Time
Apex Structural Engineering: Provides structural engineering design and construction steel connection analysis.
0+ YOEBachelor’s in civil or structural engineering; EIT; knowledge of codes; strong communication; experience with analysis software.
Tekla Structural Designer, Excel, Idea Statica, BlueBeam, RISA Suite, Revit, Ram Connection
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1d
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Entry Level Civil Engineer
Detroit or Cleveland or Maumee or Chicago or Champaign or Rockford or Freeport or Rochelle or Schaumburg or Aurora or New York or New Jersey or East Berlin or Belleville or Hartford or Providence or Boston
$65k-$95k/yr HybridFull Time
Trilon Group
Trilon Group: Providing engineering and design services for community infrastructure.
0+ YOEBachelor's in civil/structural/environmental/urban planning or related field,0–4 years experience,proficiency with Microsoft Office and design software,ability to read engineering plans,EIT or PE pursuit preferred.
AutoCAD, Civil 3D, Revit, GIS, Microsoft Office
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3w
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SDC Java Software Developer---Staff/Analyst---St. Louis (St. Louis, MO, US, 63105)
St. Louis, Missouri, United States
$55k-$113k/yr HybridFull Time
EY
EY: Global firm providing audit, tax, and professional consulting services.
1+ YOEBachelor's in CS or related, 1+ year software development experience, backend (Java/Python/Node.js), REST/APIs, cloud (AWS/Azure), microservices, frontend (React/Angular), CI/CD, Git, testing/TDD/BDD; willing to travel up to 50%.
Java, Python, Node.js, REST, NoSQL, Microservices, Serverless, AWS, Azure, React, Angular, Akka, Scala, Kafka, RabbitMQ, ElasticSearch, Hadoop, Spark, Flume, Mongo, Cassandra, Git, CI/CD, TDD, BDD, IaaS, PaaS
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1w
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Software Engineer 1 (Backend UI and AI)
Earth City, Missouri, United States
$86k-$102k/yr HybridFull Time
U.S. Bank
U.S. BankNYSE: USB: Provider of personal, business, and institutional financial services.
2+ YOE2–3 years experience, bachelor’s degree or equivalent, proficiency with ReactJS/Next.js/JavaScript/Node.js, frontend state management, CI/CD and DevOps practices, strong communication and problem-solving skills.
ReactJS, Next.js, JavaScript, Node.js, GraphQL, Apollo Client, Axios, Redux, Context API, HTML5, CSS3, SCSS, Styled Components, Webpack, Babel, NPM, JWT, Jenkins, CloudBees, Git, Azure DevOps/TFS, WCAG/ADA Compliance Tools
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