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76 reactjs developer jobs at 38 companies in East Saint Louis, IL

2w
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Developer
St Louis, Missouri, United States
OnsiteFull Time
Build-A-Bear
Build-A-BearNYSE: BBW: Sells customizable stuffed animals and provides interactive retail experiences.
5+ YOE5+ years software development experience, proficiency in full-stack OOP (C#, Java), relational databases, HTML/CSS/JavaScript and React, Git, RESTful API development, and Agile methodologies.
C#, Java, SQL, PostgreSQL, HTML, CSS, JavaScript, React, RESTful API, Git, Scrum, Kanban, Azure, AWS, CI/CD, DevOps
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2w
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Senior Python Developer
Fenton, Missouri, United States
OnsiteFull Time
ArchKey Solutions
ArchKey Solutions: Provides electrical and technology systems installation and facility services.
5+ YOE5+ years software development experience with 3+ years Python; experience with RESTful APIs, databases, cloud platforms, testing, CI/CD, containerization, and mentoring.
Python 3.x, Django, Flask, FastAPI, RESTful APIs, PostgreSQL, MySQL, SQL Server, MongoDB, Redis, Git, GitHub Actions, Jenkins, Docker, Kubernetes, AWS, Azure, GCP, pytest, unittest, TensorFlow, PyTorch, scikit-learn, React, Vue.js, JavaScript
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5d
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Application Developer - JavaScript
Charlotte or Louisville or Minneapolis or Olympia or Philadelphia or Redlands or San Antonio or St. Louis or Vienna
$84k-$141k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
2+ YOE2+ years web application development with JavaScript/TypeScript, experience with modern web frameworks, CI/CD, foundational cartography knowledge, bachelor's degree, and ability to travel up to 25–50%.
JavaScript, TypeScript, ArcGIS Maps SDK for JavaScript, React, Angular, Svelte, Vue, WebGL, ArcGIS Experience Builder, CI/CD
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2mo
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Software/Web Developer
Saint Louis, Missouri, United States
OnsiteFull Time
Kentro
Kentro: Provides digital transformation and IT services to federal agencies.
3+ YOE3+ years software or web development experience; bachelor’s degree or equivalent; proficiency with modern languages and frameworks; strong problem-solving and communication skills.
JavaScript, TypeScript, Python, Java, C#, PHP, React, Angular, Vue, AWS, Azure, Google Cloud, CI/CD, Docker, Kubernetes, SQL, NoSQL
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4w
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Software Developer - Advanced (MO, Saint Louis)
St. Louis, Missouri, United States
OnsiteFull Time
RiVidium
RiVidium: Provides cybersecurity software and IT services to federal agencies.
Requires RMF knowledge, experience with Python, HTML, CSS, JavaScript, React, Tableau, database development, and secure full‑stack software development; baccalaureate degree required.
Python, HTML, CSS, JavaScript, React, Tableau
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2mo
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Front End Developer
Springfield or Vienna or St. Louis
OnsiteFull Time
INCATech
INCATech: Award-winning small business delivering geospatial information systems and cloud/Platform services.
2+ YOE2+ years of front-end web development; HTML5, CSS3, TypeScript, JavaScript; React/Angular/Vue; GIS knowledge a plus; bachelor's in CS/math/GIS/STEM.
HTML5, CSS3, TypeScript, JavaScript, React, Angular, Vue, GIS, Docker, Kubernetes, Azure, AWS, GCP, CI/CD
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2w
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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
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1mo
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Full Stack Developer
Clayton, Missouri, United States
OnsiteFull Time
Moneta
Moneta: Provides independent wealth management and financial advisory services.
3+ YOEBachelor's degree in CS/IT, 3+ years full‑stack development experience with TypeScript, React, React Native, Node.js, RESTful APIs, PostgreSQL; Salesforce experience advantageous; authorized to work in the US.
TypeScript, React, React Native, Node.js, RESTful APIs, Express.js, PostgreSQL, Sequelize ORM, Azure Kubernetes Service (AKS), Docker, CI/CD, Microsoft Fabric, Salesforce, Apex, Visualforce, Lightning Components, SOQL, Salesforce APIs, Microsoft Office, AI/ML
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1mo
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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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3w
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Software Engineer
Maryland Heights, Missouri, United States
$105k-$128k/yr HybridFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
5+ YOEBachelor's degree or equivalent, ability to obtain U.S. Secret Clearance, 5+ years software development experience with JavaScript/TypeScript/React and C# or C++, REST API experience, Agile/Jira experience.
JavaScript, TypeScript, React, C#, C++, REST, Jira, Jira Align, Azure Devops, Git, .NET MAUI, SAFe Agile
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2w
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Software/Web Developer
Saint Louis, Missouri, United States
OnsiteFull Time
Kentro
Kentro: Provider of digital and IT services for federal agencies.
3+ YOEBachelor's degree or equivalent experience, 3+ years software/web development, experience with JavaScript/TypeScript/Python/Java/C#/PHP and React/Angular/Vue, RESTful APIs and databases, strong problem-solving and communication.
JavaScript, TypeScript, Python, Java, C#, PHP, React, Angular, Vue, RESTful APIs, SQL, NoSQL, AWS, Azure, Google Cloud, CI/CD, Docker, Kubernetes
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3w
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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
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1w
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Senior Developer
Calgary or Orlando or Edmonton or Scottsdale or Pittsburgh or Toronto or Raleigh or Columbus or Charleston or Vancouver or Winnipeg or Ottawa or Phoenix or Halifax or St. Louis or Moncton
$160k-$200k/yr RemoteFull Time
ZayZoon
ZayZoon: Provides employees with instant access to their earned wages.
4+ YOE4+ years Ruby on Rails experience, front-end fundamentals (JavaScript, React), strong SQL and data skills, background with scale/concurrency, testing practice, and Agile experience.
Ruby on Rails, JavaScript, React, React Native, SQL, Git, GitHub, Jira
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2w
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Full Stack Developer 729
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.
Active TS/SCI clearance, experience in software development/system integration, familiarity with AWS services, CI/CD, containerization, GitLab, Agile, and customer-facing technical communication.
S3, Lambda, SQS, SNS, ECS, ECR, EKS, API Gateway, Cloudwatch, KMS, GitLab CI/CD, GitLab, Docker, Podman, Kubernetes, Harbor, CloudFormation, CDK, Terraform, Linux, JavaScript, React, Angular, HTML5, CSS3, Auroa, PostgreSQL/PostGIS, Oracle, Redis, Memcache, Elasticache, GDAL/OGR, GitLab
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2mo
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Lead Software Engineer
O'Fallon, Missouri, United States
$140k-$231k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
Lead software design and architecture; build internal developer platforms; ensure secure, scalable, and high-performance software.
React, TypeScript, Backstage, AWS, Kubernetes, Terraform, CloudFormation, Splunk, CI/CD
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1mo
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Senior Developer, Full Stack - Contract
St. Louis, Missouri, United States
$51-$64/hr OnsiteFull Time, Contract
World Wide Technology
World Wide Technology: Global technology solutions provider and systems integrator.
5+ YOEBachelor's degree or equivalent; 5+ years full-stack development experience with Node.js and JavaScript, 3+ years Vue.js, experience with CI/CD, Kubernetes, Docker, GitHub, REST/GraphQL, AI coding tools, MCP, and strong testing and communication skills.
Node.js, Vue.js, JavaScript, GraphQL, REST, Apache Solr, MongoDB, PostgreSQL, Oracle, RabbitMQ, Kubernetes, OpenShift, GitHub, GitHub Actions, Jenkins, Codefresh, Docker, Linux/Unix, shell scripting, Prometheus, Grafana, Splunk, Ansible, Redis, OpenAPI/Swagger, Backstage, Azure, Claude, GitHub Copilot, M365 Copilot, Windsurf, Model Context Protocol (MCP), Minimus, Java, Grails, Python, Go, React
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1mo
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Engineer IV, Client Products and Services Portfolio
St. Louis or Tempe
HybridFull Time
Edward Jones
Edward Jones: Offers investment management and financial planning through local branches.
5+ YOE5+ years web application development experience; proficiency with Spring, REST, React, JavaScript/jQuery, Thymeleaf, JPA, Kubernetes, JUnit, Selenium, SoapUI; familiarity with Kafka, MongoDB, Oracle DB, MS SQL, Linux; DevOps/CI/CD/Agile beneficial; tech lead and mentoring experience.
Spring, REST, React, JavaScript, jQuery, Thymeleaf, JPA, Kubernetes, JUnit, Selenium, SoapUI, Kafka, MongoDB, Oracle DB, Spring Boot, MS SQL, Linux, CI/CD, DevOps, Agile
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2mo
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Lead Software Engineer (.Net)
Saint Louis, Missouri, United States
$112k-$141k/yr HybridMultiple Commitments Available
Safety National
Safety National: Provides specialty insurance and reinsurance for workers' compensation.
5+ YOE5+ years in software development; 1–2 years in technical leadership; strong .NET Core/C#, Azure, NoSQL/Relational DB, CI/CD, REST APIs; able to mentor and lead architecture efforts.
.NET Core, C#, Microsoft Azure, Cosmos DB, MongoDB, Docker, Kubernetes, React, Angular, Vue.js
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6d
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Junior Software Developer
St. Louis, Missouri, United States
$50k-$60k/yr OnsiteFull Time
Interco
Interco: Recycles nonferrous metals, electronics, and batteries for global markets.
Bachelor's in CS or related, proficiency in JavaScript, React.js, HTML, CSS, RESTful APIs, PostgreSQL, Git and Figma; experience building web/ERP applications; strong communication and problem-solving.
JavaScript, React.js, HTML, CSS, RESTful APIs, PostgreSQL, FastAPI, Git, Figma, CI/CD
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1mo
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AWS Full Stack Engineer
Springfield or Reston or Arnold
$99k-$225k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOE5+ years full-stack and enterprise application development; 2+ years AWS and IaC experience; proficiency with React/Vue, backend languages (Java, Python, Go, C++), JavaScript/TypeScript, containerization, and cloud-native patterns; TS/SCI clearance required.
React, Vue, Java, Python, Go, SQL, C++, JavaScript, TypeScript, HTML, CSS, AWS, ECS, Lambda, SQS, SNS, EC2, RDS, DynamoDB, IAM, AWS CDK, Terraform, CloudFormation, Docker, Kubernetes, MongoDB, API Gateway
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